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by salehenrahman 3804 days ago
MP4 to BPG conversion. What else did you expect?

We're essentially converting from one frequency-domain format to another in order to accommodate an entirely new inter-frame compression format. There definitely needs to be a frequency-domain to spatial-domain conversion, which that, in itself, is lossy, then it goes back to frequency-domain when re-encoding.

Give OP a break.
1 comments
shanselman 3804 days ago
Not trying to not give them a break, but I'm pointing out they said clearly there's no difference in quality. There surely is.

To your excellent point about MP4 to BPG conversion, I'd say that OP should have used (did they? I don't know) the source material to avoid a "copy of a copy."

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