Re: [Mlt-devel] Deinterlace regression

[Dan D. <da...@de...>]

On Sat, Sep 15, 2012 at 4:00 PM, Dan Dennedy <da...@de...> wrote:
> On Sat, Sep 15, 2012 at 3:19 PM, j-b-m <j-...@us...> wrote:
>> Hello.
>>
>> The recent change to deinterlace filter (1) breaks playing of some clips in
>> timeline in Kdenlive.
>>
>> I do not really understand why, but playing in the clip monitor works, while
>> playing the timeline monitor gives a black screen on some clips.
>>
>> However, looking at the code, I could fix the black screen problem with the
>> following patch. This patch seems to make sense, because in current git we
>> call:
>>
>> mlt_frame_get_image( frame, image, format, width, height, writable );
>>
>> twice in a row (at line 242 and 248).
>>
>> (1)
>> https://github.com/mltframework/mlt/commit/cf73314203ff98894b2d91a99354aaff69a53ad3
>
> No, that is intentional. Read the kdenlive bug and the comment on line
> 246 to understand why.
> I will have to figure out what is really wrong. I suspect the alpha
> channel is all zeroes. because I reproduced in a project and changed
> the background color producer to read, and it shows through.

No, that does not make sense because I am not using composite.

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