Overlaying is late for one frame!

[ssp43]

Hi!

I try to overlay the same scaled frame on each frame of my video:

ffmpeg -i Video.m2v -vf "split [out1] [out2]; [out2] scale=iw/4:ih/4 [patch1]; [out1] [patch1] overlay=20:50 [out]" -target pal-dvd -y Video_new.m2v

And I see that overlaying is late for one frame!
Log-file and screenshots of frames in attachment.

You can take any video with quick frame change and you will see.

[ssp43]

Log of ffmpeg

[ssp43]

Frame #0

[ssp43]

Frame #511

[ssp43]

Frame #512

[ssp43]

Frame #513

[cehoyos]

Do you think this is a regression?

[ssp43]

I don't know. I've never had to face this situation.

[Cigaes]

Confirmed with -vf (and -f lavfi -i testsrc as input) but not with -f lavfi.

I will be reworking the whole scheduling logic of filters, including vf_overlay. I'll keep in mind to check that particular case.

[cehoyos]

This is supposed to be fixed in current git head (and 1.0), please reopen if you can still reproduce the problem.