On 04/17/2020 06:19 PM, pdr0 wrote:
Paul B Mahol wrote
Interleave filter use frame pts/timestamps for picking frames.
I think Paul is correct.
@Mark -
Everything in filter chain works as expected, except interleave in this case
The only problem I have with 'interleave' is that it doesn't halt at end-of-stream, but that's no
big deal.
You can test and verify the output of each node in a filter graph,
individually, by splitting and using -map >
D2 below demonstrates that the output of blend is working properly , and
this also implies that G,H were correct, but you could split and -map them
too to double check
ffmpeg -i 23.976p_framenumber.mp4 -filter_complex
"telecine=pattern=46,split[A][B],[A]select='not(eq(mod(n+1\,5)\,3))'[C],[B]split[E][F],[E]select='eq(mod(n+1\,5)\,2)',datascope=size=1920x1080:x=45:y=340:mode=color2[G],[F]select='eq(mod(n+1\,5)\,3)'[H],[G][H]blend=all_mode=average,split[D][D2],[C][D]interleave[out]"
-map [out] -c:v libx264 -crf 20 testout.mkv -map [D2] -c:v libx264 -crf 20
testD2.mkv -y
Ah! I see what you're doing with [D2]. I'll try that in a few minutes (as soon as I figure out how I
can pass-through LPCM 5.1 without error).
I'm not using the 46 telecine anymore because you introduced me to 'pp=linblenddeint' -- thanks
again! -- which allowed me to decomb via the 55 telecine.
As Paul pointed out, interleave works using timestamps , not "frames". If
you took 2 separate video files, with the same fps, same timestamps, they
won't interleave correctly in ffmpeg. The example in the documentation
actually does not work if they had the same timestamps. You would have to
offset the PTS of one relative to the other for interleave to work
correctly.
That sounds like a PITA. Good thing I'm not merging 2 streams. I don't anticipate ever having to do
that.
If you check the timestamps of each output node, you will see why it's not
working here, and why it works properly in some other cases . To get it
working in this example, you would need [D] to assume [H]'s timestamps,
because those are where the "gaps" or "holes" are in [C] . It might be
possible using an expression using setpts
Gee, pdr0, I'm sorry you took the time to write about 'interleave' not working because it is working
for me.
Oops! Got to run. I just received an email from Farook Farshad <fujiw...@ne.jp> of Saudi Aramco Oil
informing me of a proposal and that I need to "revert back". ;-)
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