[Ffmpeg-devel] vhook contaminating video stream bug when-deinterlace is used on flv streams

[Víctor Paesa]

Hi,

> OK another bug from me - i Have a video file which I'm told was encoded
> using Sorenson Squeeze using the following parameters
>
> FLV
> 1500kbpbs
> Sorenson Spark codec 1-pass CBR
> 30fps (also tried 24fps)
> 400x244 size
> Keyframe every 45 & auto keyframe on scene change
> Tried with image smoothing on & off
> Audio: mp3, 128kbps, 44mhz, mono
>
> You can download it from http://www.bootysatva.com/junior.flv
>
> So when I try to use one of the vhook plugins to do something to the video
> the change seems to feedback into the next frame if there's motion the
> text overlay gets smeared along the motion path as if the decoder is
> taking the post vhook output as part of its input for generating the next
> frame. Notably, this corruption only happens when
>
> So, something like this shows the bug
>
> ffmpeg -i junior.flv -deinterlace -vcodec mpeg4 -f flv -acodec copy -vhook
> "vhook/drawtext.so  -c #ffffff -f resources/VAGRoundedStd-Bold.otf -t
> crazytext"  junior-watermarked.mov
>
> while this is fine
>
> ffmpeg -i junior.flv  -vcodec mpeg4 -f flv -acodec copy -vhook
> "vhook/drawtext.so  -c #ffffff -f resources/VAGRoundedStd-Bold.otf -t
> crazytext"  junior-watermarked.mov

Please post the ffmpeg output messages too.

Regards,
V?ctor