[FFmpeg-devel] [PATCH] avfilter: add maskedmerge filter

[Paul B Mahol]

On 9/26/15, Moritz Barsnick <barsnick at gmx.net> wrote:
> On Sat, Sep 26, 2015 at 10:29:15 +0200, Paul B Mahol wrote:
>
>> +Merge first input stream with second input stream using per pixel weights
>> in
>> +the third input stream. 0 means that pixel component from first stream is
>> +returned unchanged while 255 for 8-bit videos means that pixel component
>> from
>> +second stream is returned unchanged.
>
>> +Merge first input stream with second input stream using per pixel weights
>> in
>> +the third input stream.
>
> Merge the first input stream with the second input stream using per
> pixel weights in the third input stream.
>
> (I'm not keen on omitting all those "the"s, though it would work in
> this sentence.)
>
>> 0 means that pixel component from first stream is returned unchanged
>> while 255 for 8-bit videos means that pixel component from second
>> stream is returned unchanged.
>
> A value of 0 in the third stream means that the pixel component from
> the first stream is returned unchanged, while the maximum value (e.g.
> 255 for 8-bit videos) means that the pixel component from the second
> stream is returned unchanged. Intermediate values define the amount of
> merging between both input streams' pixels.
>
>> +This filter accepts the following options:
>> + at table @option
>> + at item planes
>> +Set which planes will be processed as bitmap, unprocessed planes will be
>> +copied from first stream.
>> +By default all planes will be processed.
>> + at end table
>
> Syntax, values? I assume like "extractplanes"'s "planes" option, right?
>

Nope, its bitmask, 0 - return first stream unchanged, 1 process only
first plane, 2 process only second plane, 3 process 1st and 2nd plane
and so on...

> Cheers,
> Moritz
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>