[FFmpeg-user] Removing an overlay

Greg gregborbonus at gmail.com
Fri Apr 26 18:42:31 CEST 2013

ok, that makes sense.

My real problem is that the logo was not always put in the same place. 
And where it was put was based on the dimensions of the video. with the 
"movie=/path/to/watermark.png [logo]; [in][logo] 
overlay=10:main_h-overlay_h-10 [out]

And that's been changed a few times over the years.

Is there anyway I can dynamically determine where the logo is, and 
remove it?

Thank you,
Greg Borbonus
*Nix Server administrator

On 4/26/2013 11:24 AM, Tom Evans wrote:
> 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
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