BTW, I recently made a commit for this issue, but I have only tested it in
the Shotcut use case you provided. It will be nice to get more feedback on
other test cases when you get a chance.
On Sat, Jul 29, 2017 at 9:58 AM Dan Dennedy <d...@dennedy.org> wrote:
> On Fri, Jul 28, 2017 at 10:30 PM Jean-Baptiste Mardelle <j...@kdenlive.org>
> wrote:
>
>> On 28.07.2017 21:27, Dan Dennedy wrote:
>>
>> Movit-based transitions are working for me in Shotcut 17.06 on both Windows
>> and macOS tested this morning. I have not tested your command line because
>> I did not have convenient access to a Linux workstation at the time;
>> however, I see you did not specify -mixer and instead use -track and
>> -transition. What I do know that does not work is XML virtual clips -
>> loading a Movit-based XML as a virtual clip in another Movit-based
>> composition.
>>
>>
>> I can crash Shotcut 17.06 on linux with a simple project:
>> * Activate GPU based movit
>> *Create 2 video tracks
>> *put 2 clips on V1
>> *overlap the 2 clips to create a transition between the 2 clips
>> *put a clip over that transition in V2
>> *move timeline cursor on the transition -> CRASH
>>
>> Picture of the project timeline attached. Let me know if you need more
>> infos but on my side it is very easily reproducible.
>>
>>
> OK, I reproduced that. However, I am not sure if it will be fixed. I am
> not spending much time on these projects any more. I will try to be
> motivated to at least take a look into this in the next couple of weeks.
>
>
>> Best regards
>>
>> Jean-Baptiste
>>
>>
>>
>> On Fri, Jul 28, 2017 at 9:14 AM Jean-Baptiste Mardelle <j...@kdenlive.org>
>> <j...@kdenlive.org>
>> wrote:
>>
>>
>> Hi all,
>>
>> Trying to work a bit with movit, I noticed it does crash when
>> encountering a tractor embedded in another one. This can easily be
>> reproduced in Shotcut, or in MLT with following command (it will crash
>> on frame 50 when the reaching the first frame of the mix tractor:
>>
>> melt color:red out=200 color:blue -mix 150 -track color:green
>> -transition movit.mix mix=0.5 -consumer xgl glsl.=1
>>
>> Crash output is :
>>
>> melt: filter_movit_convert.cpp:204: void build_fingerprint(mlt_service,
>> mlt_frame, std::__cxx11::string*): Assertion `effect' failed.
>>
>> Is this a known limitation of the movit/mlt integration (does not
>> support embedded tractors) or is there hope that this issue can be
>> solved ? We are planning to use embedded tractors in Kdenlive to allow
>> mixing in the same way as Shotcut, so I wonder if it means we can forget
>> movit...
>>
>> Thanks & regards
>>
>> Jean-Baptiste
>>
>>
>>
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