[Kdenlive-devel] Feature for kdenlive....

[Steve Guilford]

Where did you get the 'next' tree?  I'm using the build-kdenlive script 
from the MLT site.  Doesn't that get the most recent source?

On 06/30/2014 10:56 PM, Evert Vorster wrote:
> Hmm, I am using the "next" tree, and that does not have movit. All the
> stabilizers in there works as advertised.
>
> However, .mlt files do make kdenlive incredibly unstable.
>
>
> -Evert-
>
> On 1 July 2014 07:44, Steve Guilford <s.guilford at dbplugins.com> wrote:
>> I looked into this and it's not very hard to do.  I took a pass at it
>> and got it added to the menu and had the UI created.
>>
>> Unfortunately, the stabilize process crashes (SIGSEV) as soon as you
>> start the job.  So, I made sure I had a current pull from the dev-tree.
>> Same result.
>>
>> The error is the same for all three stabilization filters.
>>
>> The error is in libGL, triggered by movit:
>>
>> #0 glGenTextures() at /usr/lib/nvidia-331/libGL.so.1
>> #1
>> movit::SingleResamplePassEffect::SingleResamplePassEffect(movit::ResampleEffect*)()
>> at /storage/kdenlive_9.8/20140630/lib/libmovit.so.2
>> #2 movit::ResampleEffect::ResampleEffect()() at
>> /storage/kdenlive_9.8/20140630/lib/libmovit.so.2
>> #3 OptionalEffect<movit::ResampleEffect>::OptionalEffect() at
>> /storage/kdenlive_9.8/src/mlt/src/modules/opengl/optional_effect.h:13
>> #4 get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/modules/opengl/filter_movit_resample.cpp:82
>> #5 mlt_frame_get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/framework/mlt_frame.c:581
>> #6 get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/modules/opengl/filter_movit_resize.cpp:146
>> #7 mlt_frame_get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/framework/mlt_frame.c:581
>> #8 filter_get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/modules/videostab/filter_videostab2.c:122
>> #9 mlt_frame_get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/framework/mlt_frame.c:581
>> #10 producer_get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/framework/mlt_tractor.c:273
>> #11 mlt_frame_get_image() at
>> /storage/kdenlive_9.8/src/mlt/src/framework/mlt_frame.c:581
>> #12 consumer_read_ahead_thread() at
>> /storage/kdenlive_9.8/src/mlt/src/framework/mlt_consumer.c:782
>>
>> Do any of the stabilization filters work for you?
>>
>> I have an older source tree (0.9.7) that stabilizes correctly.
>>
>> That libGL.so.1 library may be from a vendor-distribution driver, not
>> the Ubuntu distro version - that could also be an issue.
>>
>> If you can stabilize w/out problem then I can post up the mods and you
>> can test.
>>
>> Let me know....>>>
>>
>> On 06/30/2014 03:39 PM, Evert Vorster wrote:
>>> Hi there, everybody.
>>>
>>> I _know_ that there is a lot going on with the code, and that we don't
>>> have a load of developers.
>>>
>>> However, I have to tell you that the newer vid.stab filter in mlt is
>>> absolutely amazing!
>>>
>>> To add it into mlt is not a big hassle.
>>> Get the source code for vid.stab library here:
>>> https://github.com/georgmartius/vid.stab/tarball/release-0.98b
>>>
>>> Homepage of the project is:
>>> http://public.hronopik.de/vid.stab/features.php?lang=en
>>>
>>> It will become an optional dependency of mlt in the future as it is
>>> already in use for Shotcut, but for now, mlt has to be fetched from
>>> git and built on your machine to utilize this new filter.
>>>
>>> If you are on Arch, I have already made an AUR package for vid.stab,
>>> and mlt-git is already pulling it in automatically. Thanks,
>>> IncredibleLaser!
>>>
>>>
>>> Once built, 'melt -query filters | grep stab' will return three video
>>> stabilization filters:
>>> vidstab
>>> videostab
>>> videostab2
>>>
>>> vidstab is the new one. It's command line options are exactly the same
>>> as videostab2
>>>
>>>
>>> Now, in kdenlive, videostab2 is referred as "transcode"
>>>
>>> If we could duplicate the module in kdenlive that drives videostab2
>>> and call it "vid.stab" and modify it to use the new filter and add it
>>> to the clip jobs menu, that would be awesome!
>>>
>>> In the meantime, I am stabilizing my videos on the command line.
>>>
>>>
>> --
>> Steve Guilford
>> http://www.dbplugins.com
>>
>>
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>
>

-- 
Steve Guilford
http://www.dbplugins.com