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Careful with audio resampling using FFmpeg | Transcoding ...
https://transcoding.wordpress.com/2011/11/16/careful-with-audio-resampling-using-ffmpeg/
So now i treat the audio separately from the video and do all downsampling using SSRC which preserves the treble which is indeed audible when transcoding music. A 96 kHz sweep taken from infinitewave visualized using Audacity. This is the same sweep downsampled to 44.1 kHz using FFmpeg. Notice the server attentuation already at 17-18 kHz.
ffmpeg: how to resample audio file - Stack Overflow
https://stackoverflow.com/questions/67880409/ffmpeg-how-to-resample-audio-file
0. This answer is not useful. Show activity on this post. Gyan 's comment is what I want, here is the full command line: ffmpeg -i in.m4a -ac 1 -ar 22050 -c:a libmp3lame -q:a 9 out.mp3. with the option for VBR encoding. The number after -q:a specifies encoding quality (bitrate), with 0 being the best quality (largest file) and 9 being the worst ...
Downsampling a video with avconv / ffmpeg - Unix & Linux ...
https://unix.stackexchange.com/questions/57321/downsampling-a-video-with-avconv-ffmpeg
This will copy the audio stream (-c:a copy), encode the video to x264 (-c:v libx264) with a constant quality of 23 (-crf). Use a lower value here for better quality (with sane values from 18–28). The size will be changed with -s:v. I'm using FFmpeg synonymously with Libav here, since the syntax should be the same.
file formats - How to downsample 4k to 1080p using ffmpeg ...
https://video.stackexchange.com/questions/14907/how-to-downsample-4k-to-1080p-using-ffmpeg-while-maintaining-the-quality
ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -vf scale=1920:1080 -crf 20 -c:a copy output.mp4 Options Explained-i input file name or file path-c:v libx265 -vtag hvc1 selecting compression. Default is libx264-vf scale=1920:1080 specifying output resolution-c:a copy copy audio as it is without any compression
How to use FFMpeg to do Simple Audio Conversion
https://www.howtoforge.com/tutorial/ffmpeg-audio-conversion/
ffmpeg -formats. and. ffmpeg -codecs. and all supported forms will be displayed. You can use one input file to get several different output files by just entering the name and the prefix like this: ffmpeg -i filename.mp3 newfilename.wav newfilename.ogg newfilename.mp4. This will result in converting 3 output audio files (wav,ogg,mp4) from one ...
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