I tried with ffmpeg and MediaInfo, both give me only the downloaded size. MediaInfo also gives me the stream sizes, but audio+video is still ~130kb smaller than the original final size. What can I use for that?
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info why do you need this would be very helpful. – Andriy Tylychko Jul 27 '11 at 12:12
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mp4 file like almost all other file types doesn't contain info about its size. usually it's sum of its streams + size of metadata. I believe metadata size can vary
Andriy Tylychko
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