[FFmpeg-user] propagation of frames in a filter complex

Ted Park kumowoon1025 at gmail.com
Fri Apr 17 10:52:55 EEST 2020


> What do you mean?
> split[A]    select='not(eq(mod(n+1\,5)\,3))'       [C]interleave
>     [B]split[D]select='eq(mod(n+1\,5)\,2)'[F]blend[D]
>             [E]select='eq(mod(n+1\,5)\,3)'[G]
> I created the filtergraph by hand. I don't know what folks expect, but since duplicating pads (e.g., "[A] [A]") just takes up space, I didn't duplicate them. I don't know whether that relates to "reuse filter pad labels". Could you put some 'meat' on your 'bones'?

I meant using D twice. I thought it might create a cycle or something but since the first pair of [D] were linked to each other I guess that means you could use it again for blend's output pad.
For the actual filter though, should it look better on a 60Hz vertical refresh panel than 120Hz? I don't fully understand the rationale, but I was curious and tried it, on film material I can't tell the difference but animation looks horrible at 120Hz (like I'm dizzy, like a slow motion blur effect at regular speed?) but it's fine at 60Hz.

Ted Park

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