Ffmpeg Set Input Audio | Audio-Digital.net

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Using ffmpeg to change framerate - Stack Overflow

https://stackoverflow.com/questions/45462731/using-ffmpeg-to-change-framerate#:~:text=Simply%20specify%20the%20desired%20framerate%20in%20%22-r%20%22,the%20video%20was%20encoded%20at%20the%20given%20framerate.

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FFmpeg Devices Documentation

https://ffmpeg.org/ffmpeg-devices.html

The first entry selects the video input while the latter selects the audio input. The stream has to be specified by the device name or the device index as shown by the device list. Alternatively, the video and/or audio input device can be chosen by index using the -video_device_index <INDEX> and/or -audio_device_index <INDEX> , overriding any device name …

ffmpeg Documentation

https://ffmpeg.org/ffmpeg.html

out1.mkv is a Matroska container file and accepts video, audio and subtitle streams, so ffmpeg will try to select one of each type. For video, it will select stream 0 from B.mp4, which has the highest resolution among all the input video streams. For audio, it will select stream 3 from B.mp4, since it has the greatest number of channels.

Windows Ffmpeg - send audio to sound card's output - …

https://stackoverflow.com/questions/66843134/windows-ffmpeg-send-audio-to-sound-cards-output

I couldn't find a way to do it with the ffmpeg.exe but, i found a simple way of it with the ffplay: Set the system's output to sound card from Windows sound settings and turn on mono audio option, simply run this code for send the output audio card's channel 1: ffplay -i input.mp4 -af pan="stereo|c1=c1" -nodisp. for the channel 0 and channel 1:

Change default audio track of Video file using ffmpeg ...

https://video.stackexchange.com/questions/29467/change-default-audio-track-of-video-file-using-ffmpeg

ffmpeg -i "input.mkv" \ -map 0:0 \ -map 0:2 \ -map 0:1 \ -disposition:a:0 default \ -disposition:a:1 none \ -c copy "output.mkv". input. use video stream (0:0) make 2nd audio stream (Hindi) the 1st. make 1st audio stream (English) the 2nd. use the new 1st audio stream (Hindi) as …

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