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ffmpeg - Convert an MP3 from 48000 to 44100 Hz? - Super User
https://superuser.com/questions/253467/convert-an-mp3-from-48000-to-44100-hz
1 Answer Active Oldest Votes 71 ffmpeg doesn't look to be the appropriate tool; I'd normally use sox for audio-only files. $ sox file1.mpg -r 44100 file1-enc.mpg If you want to try using ffmpeg anyway, I think the correct command would be $ ffmpeg -i file1.mpg -ar 44100 file1-enc.mpg Share Improve this answer edited Jul 6 '17 at 7:06 Community Bot
(FFmpeg) How to Change the Pitch / Sample Rate of an Audio ...
http://johnriselvato.com/ffmpeg-how-to-change-the-pitch-sample-rate-of-an-audio-track-mp3/
$ ffmpeg -i input.mp3 -af "asetrate=44100*0.5" output.mp3 . Tip: Changing the sample rate to change the pitch might create a conflict because some players or websites (like Bandcamp) require audio with a sample rate to be 44.1kHz. To keep the pitch change while setting the preferred sample rate the filter aresample is needed, as seen below:
adding silent audio in ffmpeg - Stack Overflow
https://stackoverflow.com/questions/12368151/adding-silent-audio-in-ffmpeg
Create video from image or convert image into video then add slient audio using ffmpeg. You can use the anullsrc audio source filter in ffmpeg. Example to make a 5.1 channel, 48000 Hz sample rate, 10 seconds silent video file from image: ffmpeg -loop 1 -i img002.jpg -f lavfi -i anullsrc=channel_layout=5.1:sample_rate=48000 -t 10 -c:v libx264 -t ...
ffmpeg: audio visualization tricks - Luka Prinčič
https://lukaprincic.si/development-log/ffmpeg-audio-visualization-tricks
ffmpeg: audio visualization tricks. September 2, 2017. Often one wants to share audio online, but it seems like video as a format has many more options: mastodon, twitter, facebook, youtube, all allow to upload video, but not only audio. Here are some ffmpeg tricks, how to add interesting video to your audio file, often autogenerated visuals.
FFmpeg Resampler Documentation
https://ffmpeg.org/ffmpeg-resampler.html
Default value is 0.97 with swr, and 0.91 with soxr (which, with a sample-rate of 44100, preserves the entire audio band to 20kHz). precision For soxr only, the precision in bits to which the resampled signal will be calculated.
audio conversion - How to convert WAV files of some ...
https://superuser.com/questions/696207/how-to-convert-wav-files-of-some-frequency-to-44100-hertz
I'm using Source Filmmaker, and need to convert an audio file I have to 44100 Hertz, otherwise SFM will not accept it. I believe the frequency of the file is less than 44100 Hertz, and therefore will increase in size as a result of conversion (it's a sound file from CNC RA2, if that's relevant).
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