Ffmpeg Stretch Audio | Audio-Digital.net

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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 modify audio length/size ( stretch or shrink ...

https://stackoverflow.com/questions/25635941/ffmpeg-modify-audio-length-size-stretch-or-shrink

ffmpeg modify audio length/size ( stretch or shrink) Ask Question Asked 7 years, 4 months ago. Active 5 years, 7 months ago. Viewed 6k times 3 1. I am developing a web app, where people can record videos. I have been able to send chunks of audio n video to server successfully, where I am trying to combine them and return as single proper file.

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

rubberband: with this, you can have more control on stretching your audio in compare with atempo filter. one basic command is : ffmpeg -f image2 -thread_queue_size 512 -framerate 21.5 -i /frames/%d.webp -i videomail_preview.wav -y -acodec aac -strict experimental -ac 1 -vcodec libx264 -crf 16 -preset fast -profile:v baseline -pix_fmt yuv420p -loglevel warning …

FFmpeg Filters Documentation

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

This can be used together with ffmpeg-shortest to extend audio streams to the same length as the video stream. A description of the accepted options follows. packet_size. Set silence packet size. Default value is 4096. pad_len. Set the number of samples of silence to add to the end. After the value is reached, the stream is terminated.

conversion - In ffmpeg, how to delay only the audio of a ...

https://superuser.com/questions/982342/in-ffmpeg-how-to-delay-only-the-audio-of-a-mp4-video-without-converting-the-au

If you need to delay audio by 3.84 seconds, use a command like this: ffmpeg.exe -i "movie.mp4" -itsoffset 3.84 -i "movie.mp4" -map 0:v -map 1:a -c copy "movie-audio-delayed.mp4" Make sure, that your ffmpeg build is not too old, newer than 2012 will suffice.

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