[FFmpeg-devel] FFv1.3: full GOP 1/300, 2-pass statistics for Derf's collection

Peter B. pb at das-werkstatt.com
Wed Dec 5 00:16:02 CET 2012

Here's a link to 4 tables comparing GOP=300 to GOP=1, for different
resolutions (from QCIF, SD, HD, and up to 2160p):


It took me waaaay longer than expected, but I finally found the time to
write a small php-code so I can now render these tables, selecting
different result sets.
The previous table was hand-crafted using LibreOffice, and it just took
too much time to do that for this number of different input material.

It's very interesting to see that 2-pass with GOP=1 reaches almost the
same compression ratio as single-pass with GOP=300. In some cases, it's
even small than GOP=300 (marked red).


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