https://bugs.kde.org/show_bug.cgi?id=361086

--- Comment #5 from Evert Vorster <evert.vors...@yandex.com> ---
Did a bit more investigation. 

I am able to use shotcut with GPU accell enabled, and this uses the same MLT
and Movit. 

However, kdenlive still crashes with the same error, whenever video is updated:

kdenlive: effect_chain.cpp:1778: void movit::EffectChain::render_to_fbo(GLuint,
unsigned int, unsigned int): Assertion `status == GL_FRAMEBUFFER_COMPLETE'
failed.

Thread 152 "RenderThread" received signal SIGABRT, Aborted.
[Switching to Thread 0x7fff797f8700 (LWP 5433)]
0x00007fffefb59295 in raise () from /usr/lib/libc.so.6
(gdb) thread apply all bt

Thread 152 (Thread 0x7fff797f8700 (LWP 5433)):
#0  0x00007fffefb59295 in raise () from /usr/lib/libc.so.6
#1  0x00007fffefb5a6da in abort () from /usr/lib/libc.so.6
#2  0x00007fffefb52297 in __assert_fail_base () from /usr/lib/libc.so.6
#3  0x00007fffefb52342 in __assert_fail () from /usr/lib/libc.so.6
#4  0x00007fffd84d432a in movit::EffectChain::render_to_fbo
(this=this@entry=0x7fff21c12010, dest_fbo=1, 
    width=<optimized out>, width@entry=1280, height=height@entry=720) at
effect_chain.cpp:1778
#5  0x00007fffd873fa0f in GlslManager::render_frame_texture (this=0x1c20e90,
chain=0x7fff21c12010, 
    frame=0x7fff21ed6170, width=1280, height=720, image=0x7fff797f7d98) at
filter_glsl_manager.cpp:404
#6  0x00007fffd8742af0 in convert_image (frame=0x7fff21ed6170,
image=0x7fff797f7d98, format=0x1c6a2fc, 
    output_format=mlt_image_glsl_texture) at filter_movit_convert.cpp:573
#7  0x00007ffff6d86058 in mlt_frame_get_image (self=self@entry=0x7fff21ed6170, 
    buffer=buffer@entry=0x7fff797f7d98, format=format@entry=0x1c6a2fc,
width=width@entry=0x7fff797f7d84, 
    height=height@entry=0x7fff797f7d88, writable=writable@entry=0) at
mlt_frame.c:591
#8  0x00007ffff6d9bf99 in producer_get_image (self=self@entry=0x7fff21af17a0, 
    buffer=buffer@entry=0x7fff797f7d98, format=format@entry=0x1c6a2fc,
width=width@entry=0x7fff797f7d84, 
    height=height@entry=0x7fff797f7d88, writable=writable@entry=0) at
mlt_tractor.c:370
#9  0x00007ffff6d86007 in mlt_frame_get_image (self=self@entry=0x7fff21af17a0, 
    buffer=buffer@entry=0x7fff797f7d98, format=format@entry=0x1c6a2fc,
width=width@entry=0x7fff797f7d84, 
    height=height@entry=0x7fff797f7d88, writable=writable@entry=0) at
mlt_frame.c:585
#10 0x00007ffff6d99724 in consumer_read_ahead_thread (arg=0x2cf7540) at
mlt_consumer.c:825
#11 0x000000000070358d in ?? ()
#12 0x00007ffff05fd1d8 in ?? () from /usr/lib/libQt5Core.so.5
#13 0x00007fffee0cb474 in start_thread () from /usr/lib/libpthread.so.0
#14 0x00007fffefc0d69d in clone () from /usr/lib/libc.so.6

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