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Combine Audio and Video with ffmpeg - David Walsh Blog
https://davidwalsh.name/combine-audio-video#:~:text=My%20favorite%20A%2FV%20utility%2C%20ffmpeg%2C%20allows%20you%20to,video.gif%20-i%20audio.m4a%20-c%3Av%20copy%20-c%3Aa%20copy%20output.mp4
ffmpeg - How to stretch the WAV file to the same video ...
https://superuser.com/questions/1131923/how-to-stretch-the-wav-file-to-the-same-video-length
There are 2 option in FFMPEG Audio filters that may help you: in both scenario you must manually calculate the ratio of RATIO= (VIDEO_DURATION/AUDIO_DURATION) and put …
ffmpeg, stretch audio to x seconds - Stack Overflow
https://stackoverflow.com/questions/35515678/ffmpeg-stretch-audio-to-x-seconds
Here is a sample command. ffmpeg -i input.wav -codec:a libmp3lame -filter:a "atempo=0.9992323" -b:a 320K output.mp3. UPDATE. I was able to correctly calculate the tempo by changing the way I am receiving the audio length. I am now calculating the current audio length using the actual file size and the sample rate.
ffmpeg - Trim audio stream to video stream length - Video ...
https://video.stackexchange.com/questions/28187/trim-audio-stream-to-video-stream-length
@StephenCleary: Annoyingly the shortest logic also applies to subtitle tracks, which are usually shorter than both the video and audio :( I had to strip off the subtitles in the initial shortening re-mux: ffmpeg -i original.mkv -c copy -sn -fflags +shortest -max_interleave_delta 0 trimmed-no-subs.mkv, then glue the subtitles back in afterward: ffmpeg -i trimmed-no …
Combine Audio and Video with ffmpeg - David Walsh Blog
https://davidwalsh.name/combine-audio-video
ffmpeg -i video.mp4 -i audio.m4a -c:v copy -c:a copy output.mp4. You can even use an animated GIF for the video piece: ffmpeg -i video.gif -i audio.m4a -c:v copy -c:a copy output.mp4. Banter aside, there are many good cases for combining an audio track with a video track, many examples being seen on YouTube. Happy media creation!
Resize/Scale/Change Resolution of a Video using FFmpeg ...
https://ottverse.com/change-resolution-resize-scale-video-using-ffmpeg/
And, after FFmpeg changes the resolution of the video, it will re-encode it at that resolution. In the command line above, you can supply encoding parameters to FFmpeg and encode the scaled video using those parameters. For example, you could tell FFmpeg to encode it using crf=18 for pretty high-quality H.264/AVC encoding, or choose something else!
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