[FFmpeg-devel] [PATCH]lavfi/decimate: Do not drop first frame

[Nicolas George]

Le decadi 30 frimaire, an CCXXIV, Carl Eugen Hoyos a écrit :
> > Can you explain?
> The first frame still gets dropped with your patch 
> attached.
> 
> > It worked when I submitted it, I think.
> You think?

Yes, I think so. And I just checked.

Command-line:

./ffmpeg_g -lavfi testsrc2=r=4:d=5,fps=5,showinfo,decimate=cycle=5,showinfo -f null -

Selected output with the current Git head:

checksum:3744B3ED
checksum:8EBF9CAA
checksum:8EBF9CAA
checksum:7DE48EED
checksum:7F94A8D3

checksum:8EBF9CAA
checksum:8EBF9CAA
checksum:7DE48EED
checksum:7F94A8D3

Selected output with the patch:

checksum:3744B3ED
checksum:8EBF9CAA
checksum:8EBF9CAA
checksum:7DE48EED
checksum:7F94A8D3

checksum:3744B3ED
checksum:8EBF9CAA
checksum:7DE48EED
checksum:7F94A8D3

As you can see, without the patch, it discards the first frame, the one with
checksum 3744B3ED, and keeps the second and third frames, the ones that fps
duplicated. With the patch, each frame, including the first one, is
selected.

Regards,

-- 
  Nicolas George
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