Hello,
I noticed something strange while playing with mpeg2enc. When I encode a sequence of frames to progressive mpeg2, the output quality is *much* better than when I encode the same image sequence to progressive mpeg2.
It seems to me that something must be wrong here. I use these options for mpeg2enc:
... | mpeg2enc -f 8 -b 9500 -q 1 -a 3 -o output.m2v
When I have png2yuv interpret the frames as top field first interlaced, it produces a mpeg file of the same size, but there are many more compression artifacts. It looks like it has been encoded with -q 10 or something. Why does an interlaced stream require so much more data to reach the same quality?
Please don't ask why I want to do this, I'm just playing here. I just want to understand why this is happening.
Thanks for any enlightening answers,
Dik
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