Ffmpeg Record Multiple Audio Streams

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FFMPEG - How to record multiple RTMP streams into multiple ...

https://stackoverflow.com/questions/24690806/ffmpeg-how-to-record-multiple-rtmp-streams-into-multiple-files#:~:text=Basically%20with%20FFMPEG%20you%20have%20to%20execute%20command,the%20recording%20of%20the%20rest%20of%20the%20streams.

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FFMPEG convert video with multiple audio streams?

https://video.stackexchange.com/questions/12051/ffmpeg-convert-video-with-multiple-audio-streams

-c:a -> select best supported audio (transcoded) -c:a copy -> best supported audio (copied) -map 0:a -> all audio from 1st input file (transcoded) -map 0:0 -> 1st stream from 1st input file (transcoded) -map 1:a:0 -> 1st audio stream from 2nd input file (transcoded) -map 1:a:1 -c:a copy -> 2nd audio stream from 2nd input file (copied)

ffmpeg record multi source audio - Stack Overflow

https://stackoverflow.com/questions/31936018/ffmpeg-record-multi-source-audio

1 Other than using the ffmpeg libraries in your code. You can call ffmpeg.exe to do this. On windows this will record your screen and mix the audio from two sources to an mp4 file. I didn't get good results. The audio is off synch and or the volume is low. I believe there is an issue with mixing audio in ffmpeg.

windows - FFMPEG Directshow Multiple Audio Capture - Super ...

https://superuser.com/questions/1210033/ffmpeg-directshow-multiple-audio-capture

In this case, you have to expressly map all needed streams, as the auto mapping will only pick up one audio stream. So, ffmpeg -f dshow -i audio="Stereo Mix (Realtek High Definition Audio)" -f dshow -i audio="Microphone Array (Creative VF0800)" -f gdigrab -framerate 10 -video_size 1920x1080 -draw_mouse 1 -i desktop -map 2 -map 0 -map 1 screen.avi

ffmpeg command line for capturing (and recording) audio ...

https://stackoverflow.com/questions/19212047/ffmpeg-command-line-for-capturing-and-recording-audio-and-video-in-720p-from-d

And simultaneously be able to start and stop recording, while the preview keeps playing. My idea was to use ffmpeg to capture the video and audio signal and transmit this to a network stream (eg 127.0.0.1:6666). Then use VLC player to display the stream (the preview). And ultimately start and/or stop another ffmpeg to save that same stream to disk.

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