[FFmpeg-user] Removing an overlay

[Tom Evans]

On Fri, Apr 26, 2013 at 5:12 PM, Greg <gregborbonus at gmail.com> wrote:
> Seems I did not see this one.
>
> I am attempting to use it, however, I get the following error:
> Mask image size 150x56 does not match with the input video size 560x430
> [graph 0 input from stream 0:1 @ 0x4abd6a0] Failed to configure input pad on
> Parsed_removelogo_0
> Error opening filters!
>
> I figured that means that my logo does not completely overlay the video, but
> is a partial.
>
> Any ideas?
>

The image must be exactly the same size as the video. Pixels
corresponding with the logo should be white, other pixels should be
black. See the docs:

http://www.ffmpeg.org/ffmpeg-filters.html#removelogo

There is also delogo, which operates in a different way - you specify
a box around the location the logo takes up in the video:

http://www.ffmpeg.org/ffmpeg-filters.html#delogo

Cheers

Tom