[FFmpeg-user] Removing an overlay

[Paul B Mahol]

On 4/26/13, Greg <gregborbonus at gmail.com> wrote:
> 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
> following:
> "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?

Not possible yet, feel free to open feature request on our bug tracker.

Please do not top post.

>
> 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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>
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