● Ffmpeg input stream int64_t InputStream::dts: dts of the last packet read for this stream (in AV_TIME_BASE units) Definition at line 366 of Node : Stream Number -> Stream FFmpeg's filter graph API seems to have two filters for doing that: streamselect (for video) and astreamselect (for audio). ffmpeg - switch rtmp streams into a single encoded output? Hot Network Questions What is the origin of "Arsch offen haben"? I have been trying to stream local video on VLC using the FFmpeg library like this: $ ffmpeg -i sample. Additionally, -f mp4 will result in a non-fragmented MP4, which is not suitable for streaming. Is there no Skip to main content. 92 -> 239. method createInputFromFile(file: string, options: Options): void. All these are expected to be performed in a LAN and the output be accessed by all users. mkv), you must work directly with some libs (such as libavcodec etc). - I've figured it out. jpg' or -i img%06d. 1:2000 $ ffplay udp://127. The only thing I have available to use with avcodec and avformat is the class InputStream below which is part of SFML. Apart everything works - I can play input on VLC, I can stream from FMLE to nginx etc. – Defines an ffmpeg input stream. Share Sort by: Best. 264, if not, remove the -vcodec copy. io stream object into ffmpeg using c#. 0 update Unifi Protect Cameras had a change in audio sample rate which causes issues for ffmpeg. So another client can't play the current Stream, because he won't get the Stream from the beginning. Also, I need to pipe the output. In the lavf API this process is represented by the avformat_open_input() function for opening a file, av_read_frame() for reading a single packet and finally avformat_close_input(), . include if present). But I would expect ffmpeg to stop reading after the first frame. For instance, So: Configure Video Mixer source filter to get video from WebRTC source filter (which, in turn will receive your published stream from Unreal Media Server). Saving every nth packet from a UDP stream. Definition at line 203 of file ffmpeg. 168. stream Once you I have a raw H. So in the first 1st of a second of streaming However, the documentation states that in the presence of 2 or more input streams of the same type, ffmpeg chooses "the better" one and uses it to encode the output. The stream index starts counting from 0, so audio stream The itsoffset option applies to all streams embedded within the input file. Range is -1 to INT_MAX. Arguments before -i apply to input(s) and after them they apply to output. mkv to output. Referenced by close_input_file(), Generated on Fri Dec 6 2024 19:23:51 for FFmpeg by Examples Streaming your desktop. sdp -filter_complex Or you could do a point to point type stream, like: ffmpeg -i INPUT -acodec libmp3lame -ar 11025 -f rtp rtp://host:port where host is the receiving IP. Then ffmpeg can get this content using ffmpeg -f dshow -i video="Unreal Video Mixer Source". I'm looking for a way to record a video UDP stream using ffmpeg but in 10mn chunks. New comments cannot be posted. mp4: output file name pattern. So any video The streams will be indexed from zero. One with a single video stream and another with one audio stream and one subtitle stream. I already looked into sponge from moreutils and the linux buffer command to build some kind of a pipe . 1:6666, which can be played by VLC or other player (locally). But, for the Found the answer: This person provided a solution to my problem. I know why this can be necessary. 5fps How to change this buffer that is still 3M. mp4 -c copy . Ask Question Asked 3 years, 4 months ago. 89:554/11 -f image2 -r 1 thumb%03d. So I would assume this is a matter of ffmpeg and how it processes the inputs. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. There is only one standard input, so there you have it :) In theory, we could handle several stream inputs by piping each of them to a named pipe (UNIX FIFO) and I am receiving a stream over the network with the following ffmpeg command: ffmpeg -i rtmp://server:port/input. Perhaps in three steps. audio, video_part. Ask Question Asked 6 years, 8 months ago. mp4 -i audio. http and rtmp presets cannot be used with rtsp streams. Command line: From the command line you can use -pattern_type glob -i '*. 264 at this point, or rtp. start_time_effective. 221 MPEG TS 1358 Source port: 40892 Destination port: documentum-s[Malformed ffmpeg-streamer is a packaged nodejs express server that wraps ffmpeg to allow easy streaming of video feeds directly to modern browsers for testing purposes. One of the most common use-cases for FFmpeg is live streaming. Implementation. FFMpeg - Merge multiple rtmp stream inputs to a single rtmp output. You can influence the quality of the output file using various options. Scrypted transcodes various camera feed protocols to others as needed using a plugin architecture. FFMPEG output to multiple rtmp and synchronize them. zoom – Set the zoom expression. Referenced by add_input_streams(), init_input_filter(), new_output_stream(), open_output_file(), and process_input(). video_part = ffmpeg. h. m3u8 The -fflags +genpts will regenerate the pts timestamps so it loops smoothly, otherwise the time sequence will be incorrect as it loops. I am using nodejs. Referenced by add_input_streams(), configure_input_audio_filter() ffmpeg has testsrc you can use as a test source input stream: ffmpeg -r 30 -f lavfi -i testsrc -vf scale=1280:960 -vcodec libx264 -profile:v baseline -pix_fmt yuv420p -f flv rtmp://localhost/live/test Consider adding -re Map all non-video streams conditionally (i. The -map option can also be used to exclude specific streams with negative mapping. Deprecate av_open_input_stream, av_open_input_file, AVFormatParameters and av_write_header As you see ffmpeg finf 4 channel in UDP stream, But VLC play only channel 1(IRIB-TV1). 5:1234 # re-encode ffmpeg -re -i input. 2. Viewed 1k times 0 Is there a way to change ffmpeg input while streaming to rtmp? I have this bash script #! /bin/bash VBR Detailed Description. io. I'm having a hard finding a simple solution to showcase the srt streaming protocol with FFmpeg. m3u8, ; which contain the actual mpeg-ts segmented video files. The syntax is: input_file_index refers to an input and by Use ffmpeg to stream a video file (looping forever) to the server: $ ffmpeg -re -stream_loop -1 -i test. 0 Re-encode video stream only with ffmpeg (and with all audio streams) To solve this you have to create sdp files with the rtp payload type, codec and sampling rate and use these as ffmpeg input. This is the same as specifying an input on the command line. 4. You should be able to use the -stream_loop -1 flag before the input (-i): ffmpeg -threads 2 -re -fflags +genpts -stream_loop -1 -i . The documentation for this struct was generated from the following files: ffmpeg. Best. It currently includes 6 different types of output streaming which are mjpeg, jpeg via socket. Here's a basic example of how to stream a video file to a remote server using the RTMP protocol: Write the buffer stream to a temp directory using ffmpeg-stream . Thank you. By default ffmpeg attempts to read the input(s) as fast as possible. run() ) ffmpeg -i INPUT -f pulse -device playback-device # At least one output file must be specified This tells you that you are missing the argument which you had in your working example (ffmpeg -i INPUT -f pulse "stream name"). If you don't have these installed, you can add them: sudo apt install vlc ffmpeg In the example I use an mpeg transport stream (ts) over http, instead of rtsp. m3u8, input_02. 4. Some free online services will help I'm experimenting with streaming video using the following basic method, which works fine: $ ffmpeg -re -i INPUT -f mpegts udp://127. mp4. -f segment: This tells ffmpeg to use the segment muxer, which divides the output into multiple files. 11. As input I have images named 001. Frequently the number and quality of the available streams varies. 3 to input 0, 10. c I know ffmpeg is able to read data from stdin rather than reading from disk using ffmpeg -i -. c Definition at line 220 of file ffmpeg. There are other This runs fine, but only if the client gets the stream from the beginning with the first package. 221 MPEG TS 1358 Source port: 51718 Destination port: scp-config 1068 1. FFMPEG udp input stream and input stream play local file. InputStream Client for streams that can be opened by either FFmpeg's libavformat or Kodi's cURL. jpg etc. Viewed 3k times 1 I have a System. Here's a basic example of how to stream a video ffmpeg has a special pipe flag that instructs the program to consume stdin. mp4') audio_part = ffmpeg. Viewed 9k times 4 . mp4', shortest=None, vcodec='copy') . mp4 The -map option makes ffmpeg only use the first video stream from the first input and the first audio stream from the second input for I don't have a definitive answer, but if you want to adjust your start time to be on a keyframe, you can run the following ffprobe command to determine where the nearest keyframe is:. ffprobe -show_frames -show_entries frame=key_frame,pkt_pts_time -read_intervals -i "rtsp://murl>": specifies the input source. mp4 Not sure but here we explicitly set a codec for the subtitle it may be what you call "Forced". The documentation for this struct was generated from the following files: Definition at line 331 of file ffmpeg. See FFmpeg Wiki: Capture Desktop for additional examples. By default ffmpeg attempts to Definition at line 263 of file ffmpeg. The input rate needs to be set for record if used directly with unifi protect. Referenced by add_input_streams(), do_video_out(), ifile_get_packet(), and process_input_packet(). mp4 Replace 1234 with your port. I want to stream some videos (a dynamic playlist managed by a python script) to a RTMP server, and i'm currently doing something quite simple: streaming my videos one by one with FFMPEG to the RTMP server, however this causes a connection break every time a video end, and the stream Definition at line 243 of file ffmpeg. sdp It does start streaming the video in real-time but I don't actually see any options to control the media stream like playback, record etc! In this command, -c:v copy tells FFmpeg to copy the video stream as-is, and -c:a flac tells FFmpeg to encode the audio stream using the FLAC codec. 898576050 192. dts of the first packet read for this stream (in AV_TIME_BASE units) Definition at line 321 of file ffmpeg. mp4 I want to use ffmpeg to read a video that gets streamed into a Java InputStream of some kind, without having to write it to a file, and then use ffmpeg to finalize the processing of a file, hopefully via its standard input. mp4 -c:s mov_text -c:a copy -c:v copy output. Thanks in advance. Video Mixer source filter will decompress the stream into RGB24 video and PCM audio. and then with the command. js, and mse via socket. You use avformat_open_input() for all inputs. Combine this with my image sequencing goal the process looks like this on python: I tried to exchange the different inputs (e. URL Syntax is ffmpeg -i subtitles. ; Instead of an output file name, call ffmpeg with pipe:, which will make it write to the standard output. . On input I have UDP stream from camera (udp://@:35501) and I need it to publish to rtmp server (nginx with rtmp module). NET Core. But my problem comes when I want to Change ffmpeg input while streaming. 1 is ahead of 10. # stream copy ffmpeg -re -i input. Record rtmp stream to multi flv files. png -r 10 -vcodec mpeg4 -f mpegts udp://127. ffmpeg: output_args: record: preset-record-ubiquiti. Here we select the first and second streams for both files. The accepted options are: read_ahead_limit. Now I have have 2 question: 1-Can I get all channel and service via this ffmpeg code? 2-Can I choose a special stream from this ffmpeg code?(I know that ffmpeg can choose a stream with -map option but I want to choose other service_name that in output log) I am using ffmepg to stream via RTSP from a webcam to my server. I tried (try&error) to save the first package ffmpeg sends and send this at the beginning of a new connection, then the current stream. Hot Network Questions Definition at line 365 of file ffmpeg. Your command lacked -to before the input: ffmpeg -ss 00:08:50 -to 00:12:30 -i 'https://stream_url_video' Therefore the video stream wasn't cut in the proper place. jpg if your files are sequential like img000000. How to merge multiple H. input stream to http streaming server (original audio) ffmpeg -stdin -f s16le -ar 48k -ac 2 -i pipe:0 -acodec pcm_u8 -ar 48000 -f aiff pipe:1 ffmpeg camera stream to rtmp Input streams are handled by piping them to ffmpeg process standard input. My test environment is streaming from localhost to localhost, on a macOS machine. mp4"; var stat = fs. Contribute to t-mullen/fluent-ffmpeg-multistream development by creating an account on GitHub. I used this code to convert multiple audio files: ffmpeg -i infile1 -i infile2 -map 0 outfile1 -map 1 outfile2 also use -map_metadata to specify the metadata stream: ffmpeg -i infile1 -i infile2 -map_metadata 0 -map 0 outfile1 -map_metadata 1 -map 1 outfile2 I would like to get a multicast with ffmpeg through eth1. I'd like to limit this output stream so that there are 10 megabytes of data stored at maximum at any time. Its extensive support for streaming protocols makes it compatible with all popular streaming services. For example, you can change the bitrate of the video using the -b option: When used as an input option (before -i), limit the duration of data read from the input file. Modified 7 years, 8 months ago. io stream object which is raw pcm data, if i want to convert it using ffmpeg what command shall I use. Without scaling the output. Windows users can use dshow, gdigrab or ddagrab. FFmpeg preistalled for Docker and Hass Add-on users; Hass Add-on users can target files from /media folder; Format: ffmpeg:{input}#{param1}#{param2}#{param3}. I successfully manage up connection and streaming h264 raw data but that image quality is too bad (half With rtmp and ffmpeg, I can reliably encode a single stream into an HLS playlist that plays seamlessly on iOS, my target delivery platform. input. If you need any help with the streams: your_reolink_camera:-"ffmpeg: In the Unifi 2. But i could't do it. output(audio_part. mp3 | ffmpeg -f mp3 -i pipe: -c:a pcm_s16le -f s16le pipe: pipe docs are here supported audio types are here The idea is to overlay two streams and toggle the opacity of the top stream, effectively switching stream. vflip (stream) ¶ Flip the input video vertically. Here's my command line: ffmpeg -i rtsp://192. h Add avformat_open_input and avformat_write_header(). If you want to use ffmpeg with some stream input files, you must use Pipes, but if file cannot converting into pipes (e. UseShellExecute = false. when reading from a file). I want to create two hls streams: Resolution of 800x600 with h264 encoding and and 0. I am capturing thumbnails from a webcam RTMP stream every 1 second to JPG files. I'm new to Go! I'm doing a simple test that is reading the output from ffmpeg and writing to a file. And for the most part, they seem to do what I want: You can use a similar filter for audio streams: [in0][in1]astreamselect=inputs=2:map=0[out] Your process method is already good, just needs adjustments: Set StartupInfo. ffmpeg transcoding one input video stream and multiple output video streams in the same file. -segment_time 5: duration of each segment. Ffmpeg won't pull the files that are online for you, you have to pull them yourself, this can be done by using call GET on the stream url which returns a file containing addresses of . New. Using the command: ffmpeg -y -f vfwcap -r 25 -i 0 c:\out. I know that you can accept multiple input streams into ffmpeg, and I want to switch between the input streams to create a consistent, single, seamless output. Therefore, adjusting timestamps only for a single stream requires to specify twice the same input file. input('video. srt -i input. Referenced by add_input_streams(), check_keyboard_interaction() How to input system. Examples below use x11grab for Linux. When used as an output option (before an output url), stop writing the output after its duration reaches duration. input(). 10. Hot Network Questions My assumption is that ffmpeg is reading the input stream into the aforementioned circular buffer, and the code then generates the output stream also reads from that same buffer. Current launch command: ffmpeg -f dshow -i video="screen-capture-recorder" -vcodec libx264 -preset:v ultrafast -filter:v "crop=480:270:0:0" -vf tpad=start_duration=30 -r 30 -g 60 -keyint_min 60 -sc_threshold 0 -b:v 1G -maxrate 2500k -bufsize 1G -rtbufsize 1G -sws_flags lanczos+accurate_rnd -acodec aac -b:a Definition at line 243 of file ffmpeg. which stream to operate upon) is impressive I think I’d like to be more explicit when I form commands. I assume that the input is already in H. I currently use the following to get 10mn of video (with h264 transcoding). . Seems like ffmpeg does not play well with dual streams (MP4 video frames and AAC audio, at least), and every time I tried using this, it deadlocks or doesn't use a stream. Defines an ffmpeg input using specified path. In your case, your command would look something like: ffmpeg -sample_rate 44100 -f s16le -i - -ar 22050 -codec copy -f wav - In this case, -ar 44100 and -f s16le apply to the input, since they came before the input. For example, when using a reolink cam with the rtsp restream as a source for record the preset-http-reolink will cause a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Video Stream. I would like to programmatically start & stop the recording using a PHP or Bash shell script. m3u8. Default is 65536. Using the -map option disables the default stream selection behavior and allows you to manually choose streams. RedirectStandardOutput = true and StartupInfo. ffmpeg -f decklink -i 'DeckLink Mini Recorder' -vf setpts=PTS- then I'm afraid to say you will need to code a "switcher" (probably, if streaming, the stream is going to stop). 1:23000 Along with @Omy's answer be sure to add -re before the input to ensure realtime (normal) livestreaming than sending too many UDP payloads at once. How can I merge these two files together? I tried using the command ffmpeg -y \ -i " ffmpeg Map with multiple input files. I couldn't get it to work but for anyone to try: # compiled with --enable-libzmq ffmpeg -i INPUT -filter_complex 'null[main];movie=INPUT2,zmq,lumakey@toggle=tolerance=1,[main]overlay,realtime' int64_t InputFile::input_ts_offset: Definition at line 402 of file ffmpeg. 1. Definition at line 249 of file ffmpeg. %d is a placeholder that will be replaced by a number, starting from 0. The commands in the diagram above will select the video from input0. stream When I'm trying to stream the video of my C++ 3D application (similar to streaming a game). Another suggestion: Im currently working on streaming a mp4 file encoded with h264 over TCP and decoding at the mobile side (Android). 264 video stream with the ffmpeg library (i. You can tell how much ffmpeg reads by using an io. Ask Question Asked 6 years ago. 1:5000 eth1 -f mpegts udp://239. Parameters. Top. If it turns out that ffmpeg reads everything, an io. ffmpeg can process it but it really doesn't want to Let's The ideal scenario is to use ffmpeg. Golang and ffmpeg realtime streaming input/output. I want to do this with the ProcessBuilder or Process objects. txt which is in the correct format, that both contain an H. Here's the http protocol that exposes the relevant AVOptions. I have two files, specified by streams. The problem was it uses too much CPU. 0. Modified 3 years, 4 months ago. zoompan (stream, **kwargs) ¶ Apply Zoom & Pan effect. mp4 I took this error: [NULL @ 0000000002f07060] Packet header is not contained in global extradata, corrupted stream or invalid MP4/AVCC bitstream Failed to open bitstream filter h264_mp4toannexb for stream 0 with codec copy: I How can I merge two input rtp streams in ffmpeg? 1. 0. I've looked at avformat_open_input and AVIOContext and I learned how to use custom stream with a buffer but how do I create an AVIOContext that The documentation for this struct was generated from the following files: ffmpeg. Referenced by add_input_streams(), check_keyboard_interaction() It's possible switching between 2 inputs on the fly, but the input streams must be "alive" all the time. Hot Network Questions 310 Volt Brushless DC Motor Advantages Dehn-twist on punctured 3-manifold Sense of parking names at GCTS Will a body deform if there is very huge force acting on it in a specific direction? For example to take snapshots or playing different video/audio streams from input memory-stream file. input('audio. ffmpeg. From APIChanges: 2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53. 2. -ac sets how many channels the input has and -channel_layout sets how to interpret their layout. Using FFmpeg, it creates a video stream out of the copied images. In FFmpeg, the parameters come before the input/output, for that specific input/output. LimitReader might help. I launch the ffserver and it works. Definition at line 218 of file ffmpeg. Generated on Sun May 13 2018 02:04:31 for FFmpeg by The -map option is used to choose which streams from the input(s) should be included in the output(s). Viewed 3k times 1 . As soon as I start FFMpeg/FFplay, the MPEG TS packets start coming in, but still FFMpeg won't open the stream: 1067 1. y – Set the y expression. int InputFile::input_sync_ref: Definition at line 475 of file ffmpeg. I have encoded an H. txt -map 0:0 -map 0:1 -map 0:2 -c:v copy -c:a:0 copy -c:a:1 copy output. Ask Question Asked 7 years ago. You can get a Referenced by close_input_file(), open_input_file(), process_frame(), read_interval_packets(), and show_stream(). I was playing with it, and got the following example: Thanks for feedback, we are trying to add/remove inputs on the fly without restarting ffmpeg so that when we do rtmp streaming clients don't get disconnected. Modified 6 years ago. Multiple Video Streams in one Feed ffmpeg. Stream behavior. a network stream or stdin or an optical disc or something else). We are able to ffmpeg -i udp://localhost:1234 -vcodec copy output. 2 I'm trying to use ffmpeg to stream a webcam with as close to zero latency as possible. Amount in bytes that may be read ahead when seeking isn’t supported. int InputStream::decoding_needed: Definition at line 221 of file ffmpeg. ts files, curl can be used to download these files on your drive. Default is 0. You can get any stream or file or device via FFmpeg and push it to go2rtc. If I create a file stream from the same file and pass that to fluent-ffmpeg instead I would to do a live streaming with ffmpeg from my webcam. It brings seeking capability to live streams. x – Set the x expression. AVDictionary *options = NULL; av_dict_set(&options, "icy", how i can change input on ffmpeg without stop process on linux Debian 9? im user decklink input and i need to change to file mp4 input. Also, since the format cannot be determined from the file name anymore, make sure you use the -f An fread() call comes much earlier in the pipeline -- from the input stage, assuming that the input comes from a file (vs. Referenced by do_video_out(), int InputFile::nb_streams: Definition at line 409 of file ffmpeg. 1:2000 However, when replacing udp with tcp (see here), ffmpeg says "connection refused". Mainly used to simulate a grab device, or live input stream (e. what will be the correct command to use for ffmpeg to "cache" few seconds of the input stream (input is mpegts) before emitting the stream out as is ? Given a file input. Here is a log while running in I need to take an input stream's audio and another stream's video and combine them with fluent-ffmpeg. mp4 here ffmpeg will use its "default stream type" or codec to an MP4 output. Hoping someone can guide me to the right place. char *format = "h264"; My guess is that your stream isn't in the format you think it The following are 30 code examples of ffmpeg. is because some mp3s had artwork, which, ffmpeg sees as two streams for each input mp3 file, one audio (for the music itself) and one video (for the image artwork file). I am flagging this as an answer because it does go in the right direction. Then, if you have specified a video bitstream filter via the -vbsf command line option, the ffmpeg transcoding one input video stream and multiple output video streams in the same file. Should not be used with actual grab devices or live input streams (where it can cause packet loss). How can I make a Transcoded Video Filestream using C# and . duration must be a time duration specification, see (ffmpeg-utils)the Time duration section in the ffmpeg-utils(1) manual. This will set the Icy-MetaData HTTP header when opening the stream:. 2 ffmpeg - switch rtmp streams into a single encoded output? 2 FFMPEG: How to chose a stream from all stream. Open comment sort options. mp4 output. A packet contains one or more encoded frames which belongs to a single elementary stream. FFmpeg can basically stream through one of two ways: It either streams to a some "other server", which re-streams for it to multiple clients, or it can stream via UDP/TCP directly to some single To have FFmpeg act as an HTTP server, you need to pass the -listen 1 option. From man ffmpeg-protocols: FFmpeg can't stream AAC files from stdin? 1. Common stream formats such as plain TS, HLS and DASH (without DRM) are supported as well as many others. -program title=ProgOne:st=0:st=1 -program ProgTwo:st=2:st=3 Tell FFmpeg to generate two programs in the output MPTS. mp4 file. Modified 4 years, 11 months ago. examples; Example of creating temp files with nodeJS node-tmp; related questions: 1. statSync(filePath); var range = ffmpeg handles RTMP streaming as input or output, and it's working well. macOS can use avfoundation. Official documentation: vflip. My stream was created with this: ffmpeg -f v4l2 -input_format h264 -video_size 640x480 -framerate 30 -i /dev/video0 -preset ultrafast -tune zerolatency -vcodec copy -f h264 udp://machine:1500 Your code worked for me after I changed. 5 seconds %d. But again, it has no purpose / effect anyway, at least for the nut container format! So I'll just ignore the "guessing" message. Passing udp unix socket as input to ffmpeg. c#; ffmpeg; Share. Influencing the Quality. dts I managed to run ffmpeg in Android Studio project, but don't know how to set the Android's camera as the input of ffmpeg. io, progressive mp4, native hls, hls. I'm a bit confused on how did you manage to save both streams into a single file (your last code snippet). What I ended up doing is filtering the required streams using ffmpeg -map and piping the output to ffprobe -show_frames as follows: ffmpeg -i INPUT -map 0:0 -map 0:1 -c copy -f matroska - | ffprobe -show_frames - Several notes: Another streaming command I've had good results with is piping the ffmpeg output to vlc to create a stream. 264 video stream (which starts with hex 00 00 01 FC , a 3-byte start code followed by a NAL unit). -re (input) Read input at the native frame rate. or ffmpeg -i INPUT -f mpegts udp://host:port That will start an FFMPEG session and begin saving the live stream to my test. Modified 7 years ago. jpg, 002. stream -f flv rtmp://server2:port/output. Here is my code var filePath = null; filePath = "video. So, I have the HomeKit plugin (output) installed alongside the UniFi Protect and Ring plugins (input). Normally they correspond to the video and audio stream. For example, a) encode video With FFmpeg, you can take an input source, such as a camera or a screen capture, encode it in real-time, and send it to a streaming server. That's why VLC shows a single stream. So the correct command is: ffmpeg -i INPUT -f pulse -device playback-device "stream name" Note-re option will slow down the reading: "Read input at native frame rate. e. The :a portion lets ffmpeg know that you want it to use only the audio stream(s) that it reads for that input file and to pass that along to the concat filter. Understanding a positive offset By the way, run ffmpeg -layouts to see the names of all valid layouts. If your input video already contains audio, and you want to replace it, you need to tell ffmpeg which audio stream to take: ffmpeg -i video. mp4 -f rtsp -rtsp_transport tcp rtsp://localhost:8554/live. Is there some command like ffmpeg eth1 -i udp://236. FFmpeg for Live Streaming. g. The demuxer layer (elementary stream in your case) will ask the input layer for data. mp4 I can successfully save the input stream into the file. Set the icy AVOption to 1 when calling avformat_open_input. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company ffmpeg -loglevel fatal -fflags +igndts -re -i "$1" -acodec copy -vcodec copy -tune zerolatency -f mpegts pipe:1 $1 is an mpegts http stream url. And it's a bit different of: ffmpeg -i input. I'm able to successfully stream an mp4 audio file stored on a Node. I know I can do it in a different way, simply convert, but this is the beginning of a project where I am attempting to use ffmpeg to record an HLS Livestream, described by input. Outputs from complex filtergraphs are automatically mapped to the first output so manual mapping is not required. 1:1234; When running the whole thing together, it works fine for a few seconds until the ffmpeg halts. If you want the output video frame size to be the same as the input: Not natively. 5fps; Crop part of the input stream and convert it as h264 as well with 0. 1. Is this possible to do, and if so, how? If it's not possible with these objects, would it be possible I've been using ffmpeg quite a lot in the past few weeks, and recently I've encountered a very annoying issue - when I use ffmpeg with an input stream (usually, just a url as the input) and try to set a start time (with -ss option), I always get a warn message that says "could not seek to position: XXX". Should not be used with live input streams (where it can cause packet loss). mp4, how can I use ffmpeg to stream it in a loop to some rtp://xxx:port? I was able to do something similar for procedurally generated audio based on the ffmpeg streaming guides, but I was unable to find a video example: ffmpeg -re -f lavfi -i aevalsrc="sin(400*2*PI*t)" -ar 44100 -f mulaw -f rtp rtp://xxx:port ffmpeg -i {input file} -f rawvideo -bsf h264_mp4toannexb -vcodec copy out. I need to make this chain: JVC HM650--UDP-->localhost-->ffmpeg(copy stream)-->nginx-rtmp. Ask Question Asked 7 years, 8 months ago. From another terminal I launch ffmpeg to stream with this command and it works: sudo This format flag reduces the latency introduced by buffering during initial input streams analysis. See the Advance options chapter of FFmpeg documentation and wiki for -map. pressing q will quit ffmpeg and save the file. Then receive the stream using VLC or ffmpeg from that port (since rtp uses UDP, the receiver can start up any time). Viewed 7k times 1 I have two files. mp3') ( ffmpeg . Referenced by add_input_streams(), check_keyboard_interaction() Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How to input system. Referenced by add_input_streams(), ffmpeg_cleanup(), and init_input_stream(). Remember to specify the f option, which specifies the format of the input data. This stream comes in at a high resolution (2560 x 1980) at only 2fps. My belief is that ffmpeg (and X264) are somehow buffering the input stream from the webcam during the encoding process. The app will automatically start FFmpeg with the proper arguments when someone starts watching the stream. h; ffprobe. nb_streams: Definition at line 488 of file ffmpeg. Hot Network Questions Movie where a family crosses through a dimensional portal and end up having to fight for power Listing ongoing grant application on CV How to set the limits of a I'm using ffmpeg to create time-lapses and it's working great. I'm currently trying to write a custom SoundFileReader for SFML using ffmpeg's libraries. With FFmpeg, you can take an input source, such as a camera or a screen capture, encode it in real-time, and send it to a streaming server. Both of the inputs have video and audio, but I need to merge a stream's audio only, while doing the same with video on the other stream. FFMPEG: Need to mix dow multiple audio stream to single stereo. Examples: Multiple stream inputs/outputs in fluent-ffmpeg. jpg How can I make FFMPEG die To know how many bytes you need requires you to decoce the video, at which point you probably don't need ffmpeg anymore. I don't know why this does work, so what I was missing in my original code, though:. ffmpeg -i %3d. char *format = "mpegts"; to. mp4 -v 0 -vcodec mpeg4 -f mpegts udp://127. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. Modified 4 years, 6 months ago. Viewed 8k times 1 . int InputStream::decoding_needed: Definition at line 219 of file ffmpeg. 0 - avformat. mp4 I create the video. The addon also Using -map helps with specifying which input goes with which output. 3 How to transcode a stream of data using FFMpeg (C#) Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link to this question ffmpeg transcoding one input video stream and multiple output video streams in the same file. I’d therefore like to get a report of what streams are contained within an input file. Ask Question Asked 11 years, 9 months ago. 194. mp4 and the 3rd audio stream from input1. The returned stream is a writable stream. Cache the input stream to temporary file. Video input types supported are rtsp, mp4, mjpeg, and hls. SDP example: v=0 c=IN IP4 127. One of the windows from the software is the one used as Input in the ffmpeg command line. Piping ffmpeg output into ffplay stdin with boost. ffmpeg with multiple live-stream inputs adds async delay after filter. sdp -i b. 897872161 192. mp4 Or try: ffmpeg -i rtp://localhost:1234 -vcodec copy output. mp4 or . The commands do the same thing, I’m reading the FFmpeg documentation from top to bottom and I’ve reached stream selection and stream specifiers and while the inference logic (i. I am sure these settings work if the input format is RAW audio WITHOUT Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am subscribing to an input stream from tvheadend using ffmpeg and I am writing that stream to disk continuously . ffmpeg -i INPUT -itsoffset 5 -i INPUT -map 0:v -map 1:a OUTPUT adjusts timestamps of the input audio stream(s) only. Output: - Facebook (example) - Youtube (example) At the beginning, i thought that maybe could be better create two different ffmpeg processes to stream independently to each output. I am trying to transcode a single video file with 1 video stream and several audio streams to the file having same video stream in different bitrates/sizes I am trying to stream a video file with fluent-ffmpeg. js server using fluent-ffmpeg by passing the location of the file as a string and transcoding it to mp3. Unsupported codec with id 100359 for input stream 8 Locked post. mp4 -c copy -f mpegts srt://192. sdp ffplay -rtsp_flags listen rtsp://localhost:8888/live. The only article that I've found, is either going over multiple hoops to setup a stream. 0 there is built-in support for them. note that almost always the input format needs to be defined explicitly. video, 'output-video. TeeReader. Is this supported for all file formats? For input protocols it has no such restriction. mp4 -c:v ffmpeg -re -i input -f rtsp -rtsp_transport tcp rtsp://localhost:8888/live. dts. -1 for unlimited. The overrun would happen when the code that generates the output doesn't keep up with the rate at which it's being written to the buffer, right? It is important to be mindful of input args when using restream because you can have a mix of protocols. internally to my application) and can push it to a local address, e. rtp://127. Thank you @xanatos The most efficient method is to use negative mapping in the -map option to exclude specific stream(s) ("tracks") while keeping all other streams. FFmpeg is ran with the following command: ffmpeg -loop 1 -i . How to input system. jpg, etc. 3. -map -0:a:2 then deselects audio stream 3. This command will reduce noticeable the delay and will not You need to consider how the arguments in ffmpeg work. Referenced by add_input_streams(), check_keyboard_interaction() This parameters allows ffmpeg to process specific streams and can be provided multiple times. Demuxers read a media file and split it into chunks of data (packets). example (output is in PCM signed 16-bit little-endian format): cat file. Improve this question I have the camera-like device that produces video stream and passes it into my Windows-based machine via USB port. In case you are looking for shoutcast metadata Since FFmpeg 2. Remove a specific audio stream / track ffmpeg -i input -map 0 -map -0:a:2 -c copy output -map 0 selects all streams from the input. 264 video stream, an AC-3 audio stream and an AAC audio stream, and am concatenating the two files using the following ffmpeg command: ffmpeg -f concat -safe 0 -i streams. /test. Is it possible now? If not, is there some open-sourced projects that can get Android's camera and turn the phone to a rtsp server? Then I can use ffmpeg to get that rtsp link. jpg, img000001. In this tutorial, we’ll see how to use FFmpeg to stream our webcam over the most common network protocols. 1:5000 ? I also need to know how to send the multicast through the same interface like ffmpeg eth1 udp://236. Default is 1. 264 stream. wav -c:v copy -c:a aac -map 0:v:0 -map 1:a:0 output. Referenced by add_input_streams(), check_keyboard_interaction() Definition at line 207 of file ffmpeg. 1 m=audio 2002 RTP/AVP 96 a=rtpmap:96 L16/16000 Use sdp files as input in FFmpeg: ffmpeg -i a. I ended up encoding the video first, and then overlaying the audio with the help of another ffmpeg run. In this case, it’s an RTSP stream from an IP camera. ffmpeg 2. 0 / 53. Using the command: ffmpeg -y -f vfwcap -i list I see that (as expected) FFmpeg finds the input stream as stream #0. Afterwards combine the temporary files fluent-ffmpeg. 193. d – Set the duration expression in number of There is an article that says you can scale a video to be a multiple or fraction of the input size like this: -vf "scale=iw/2:ih/2" to scale by half Are there any other symbols for input FFmpeg is a versatile multimedia CLI converter that can take a live audio/video stream as input. Takes about 5 seconds to load once opened in VLC; Timer stays stuck on the same second for multiple minutes; My hunch here for the stream being stuck on 1 timestamp is that while ffmpeg is sending frames out at 30 frames per second, I'm sending it frames much quicker than that. I'm not particularly wedded to h. 1 to input 2), then 10. /target/target_image. exe with input of a raw WidthxHeight RGB or YUV stream and with raw pcm stream. How could I sync the different sources in the output? You could then use this stream as input and live transcode it to something else. jpg -sameq -s 1440x1080 video. 1:5000?pkt_size=188. I have a application is being the "middle man" receiving a video stream from a source via UDP and passing this video stream to a ffmpeg instance on a server and ffmpeg -i <input video file/stream> -vcodec rawvideo -acodec pcm_s16le pipe:1 | ffmpeg -f rawvideo -i - -vcodec <video output codec> -acodec <audio output codec> -vb <video bitrate if applicable> -ab <audio bitrate if applicable> <final-output-filename> This worked for me when I last tried, but my goal was to pipe ffmpeg into ffplay, which is a I am trying to launch up a rtmp transcoder server using ffmpeg; that receives udp MPEG-TS streams as input, transcodes it; and generates an rtmp output to a URL, that can be accessed by users to receive and play the rtmp stream. 264 streams into a single H. m3u8 contains a number of different bitrate streams: input_01. Caching wrapper for input stream. Merge Multiple Videos using node fluent ffmpeg. cftbymdrlqmvjpykuagynktjslaaxfnnumaevzkmpwrtslfws