[FFmpeg-user] decomb versus deinterlace

[Michael Koch]

Mark,

>
>> "recurse" works if your timestamps are correct.
>
> Carl Eugen said that, too. How could the timestamps be wrong?

Well, I think the timestamp isn't "wrong", but it's "not as you expect".
If a filter has two inputs and the input frames have different 
timestamps, then what's the timestamp of the output frame? It could be 
copied from the first or from the second input, or it could be a mix of 
both timestamps. I don't know how FFmpeg handles this case.
That's why I suggested to swap the two inputs of the blend filter and 
check if there is a difference.

Michael