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I'm using a code like that to convert a sequence of images into a video.

ffmpeg -framerate 24 -i a%04d.jpg -vcodec libx264 -b 40000k video.mp4

I noticed that the size of the output video is much less than the total size of the images. Does that mean there's a reduction in the quality?

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    ffmepg is the tool. The quality depends on the codec, not the tool. – GabrielaGarcia Nov 8 '18 at 11:48
  • @GabrielaGarcia Thanks for replying. So you mean the reduction in video size necessarily means a reduction in quality? – user2824371 Nov 8 '18 at 11:52
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    No, I didn't mean that. I merely pointed out how confused is your question. – GabrielaGarcia Nov 8 '18 at 11:53
  • See superuser.com/a/421295/114058 - especially the section on temporal redundancy – Gyan Nov 8 '18 at 11:56
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    Basically, yes. – Gyan Nov 8 '18 at 11:59

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