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Old 18th December 2020, 10:35   #16  |  Link
nji
Registered User
 
Join Date: Mar 2018
Location: Germany
Posts: 201
Wow - thank you for providing these results.

I would like to add just one aspect I observed
if the dupes are not pure (bit-wise identical).

Strangely enough this is the case for many already
already existing "still frame" movies
where one might want to get rid of the useless huge amount
of video data.
I would have bet it works for them too,
but a closer look reveils that the codecs produced
slightly different frames.

So Avisynth's ExactDeDup (no sequence lenght limit)
won't do.
(BTW StainlessS pointed out that Lagarith produces
nul frames for pure dupes).
So it would be necessary to generate pure dupes
from the similar ones before (by the orig Dup filter).

I wonder why all these conditions (especially the ones
poisondeathray worked out) aren't provided by a fine
converter cfr > vfr, so nobody needed care about
compatibility, and saved huge amounts of space.

Last edited by nji; 18th December 2020 at 10:40.
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