[FFmpeg-user] Why do these blank spots appear in spectrograms of converted youtube videos?
dummycommandline at gmail.com
Fri Jan 6 09:58:28 EET 2017
I was converting a bunch of youtube videos into 16kHz wav files using ffmpeg
I used the following commands
youtube-dl -f best /path/to/youtube/video/ -f 'bestvideo,bestaudio' -o
ffmpeg -i /path/to/download/m4a/audio -acodec pcm_s16le -ar 16000 -ac
When I use these youtube videos
I see many blank spots in their spectrograms (see the ones uploaded here
Natural speech should not have such artefacts.
I am confused why this is happening. Is it because of ffmpeg conversion of
m4a audio OR was it somehow fault of the original recording?
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