Andy Furniss wrote:
Possibly, or you didn't restrict to baseline.
You really should know what format the source video is is to do
things properly.
If say it's interlaced and stored as 422 or 411 then the default
conversion to 420 will be wrong. You would need to add interl=1 to
the scale filter (even then it's not truly correct, but the
difference is hard to see). If you want to keep as interlaced you
would also need to encode as MBAFF with libx264 and be sure to check
field dominance is correctly flagged in stream and container.
Of course if the source is interlaced and you just want something
"disposable" for the web rather than an archive, you could just
de-interlace it. Choices still involved = framerate/fieldrate, but
may (depending on source format) be able to avoid source chroma
format issues.
Do you really need baseline - it's less efficient that other profiles,
also it won't do MBAFF.
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