Rendering video from kdenlive with GPU render enabled stuck on 99%

[ekitru]

Currently this problem is reproduses for many users, rendering works, but unable to finish render. https://forum.kde.org/viewtopic.php?f=272&t=125642&p=374677#p374677

[ddennedy]

All developers that use MLT need to contribute and support MLT. There are no longer dedicated MLT developers. As such, the Kdenlive devs will need to debug this.

[ekitru]

I see. Is is well known issue for other devs?

[DGxInfinitY]

A work around from what I can tell is to disable multicore rendering when using libmovit, this is a bug with libmovit as far as I can tell, it worked for me and after checking some of the documentation it clearly states: Do not try to use parallel rendering threads with real_time > 1 or real_time < 1 at this time.

[AV11D724]

I have similar problems(not just this one). This is data that i got from debugging with GDB. It seems that MLT cannot access opencv libraries. Just in case code is hard to read here is a hastebin link: https://hastebin.com/enuxajelog.go

(gdb) run Starting program: /usr/bin/kdenlive [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/libthread_db.so.1". [New Thread 0x7fffde127700 (LWP 26831)] [New Thread 0x7fffda810700 (LWP 26833)] [New Thread 0x7fffd099d700 (LWP 26834)] [New Thread 0x7fffcbfff700 (LWP 26835)] [New Thread 0x7fffc892e700 (LWP 26838)] [New Thread 0x7fffa01b2700 (LWP 26862)] mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltopencv.so (/usr/lib/mlt/libmltopencv.so: undefined symbol: _ZN2cv7Tracker4initERKNS_3MatERKNS_5Rect_IdEE) [New Thread 0x7fff9a3fe700 (LWP 26932)] [New Thread 0x7fff98ffd700 (LWP 26933)] [New Thread 0x7fff93fff700 (LWP 26934)] [New Thread 0x7fff91c3f700 (LWP 26937)] [Thread 0x7fff91c3f700 (LWP 26937) exited] [New Thread 0x7fff91c3f700 (LWP 26938)] [New Thread 0x7fff9143e700 (LWP 26939)] [New Thread 0x7fff909fa700 (LWP 26942)] [New Thread 0x7fff87cec700 (LWP 26947)] [New Thread 0x7fff872b8700 (LWP 26948)] [New Thread 0x7fff84c5d700 (LWP 26956)] [New Thread 0x7fff5a82b700 (LWP 26957)] [New Thread 0x7fff58e60700 (LWP 26958)] [Thread 0x7fff58e60700 (LWP 26958) exited] [Thread 0x7fff91c3f700 (LWP 26938) exited] [Thread 0x7fff5a82b700 (LWP 26957) exited] [Thread 0x7fff87cec700 (LWP 26947) exited] [New Thread 0x7fff87cec700 (LWP 27048)] [Thread 0x7fff87cec700 (LWP 27048) exited] [New Thread 0x7fff87cec700 (LWP 27049)] [New Thread 0x7fff5a82b700 (LWP 27053)] [New Thread 0x7fff91c3f700 (LWP 27055)] [Thread 0x7fff87cec700 (LWP 27049) exited] [Thread 0x7fff91c3f700 (LWP 27055) exited] [New Thread 0x7fff91c3f700 (LWP 27058)] [Thread 0x7fff91c3f700 (LWP 27058) exited] [New Thread 0x7fff91c3f700 (LWP 27059)] [Thread 0x7fff5a82b700 (LWP 27053) exited] [New Thread 0x7fff5a82b700 (LWP 27060)] [New Thread 0x7fff87cec700 (LWP 27061)] [New Thread 0x7fff58e60700 (LWP 27062)] [Thread 0x7fff58e60700 (LWP 27062) exited] [Thread 0x7fff91c3f700 (LWP 27059) exited] [Thread 0x7fff87cec700 (LWP 27061) exited] [New Thread 0x7fff87cec700 (LWP 27090)] [Thread 0x7fff87cec700 (LWP 27090) exited] [New Thread 0x7fff87cec700 (LWP 27091)] [Thread 0x7fff5a82b700 (LWP 27060) exited] [New Thread 0x7fff5a82b700 (LWP 27092)] [New Thread 0x7fff91c3f700 (LWP 27095)] [New Thread 0x7fff58e60700 (LWP 27096)] [Thread 0x7fff58e60700 (LWP 27096) exited] [Thread 0x7fff87cec700 (LWP 27091) exited] [Thread 0x7fff91c3f700 (LWP 27095) exited] [New Thread 0x7fff91c3f700 (LWP 27155)] [Thread 0x7fff91c3f700 (LWP 27155) exited] [New Thread 0x7fff91c3f700 (LWP 27156)] [Thread 0x7fff5a82b700 (LWP 27092) exited] [New Thread 0x7fff5a82b700 (LWP 27157)] kdenlive: resource_pool.cpp:577: GLuint movit::ResourcePool::create_vec2_vao(const std::set<int>&, GLuint): Assertion vao_formats.count(key) == 0' failed.

Thread 36 "RenderThread" received signal SIGABRT, Aborted. [Switching to Thread 0x7fff5a82b700 (LWP 27157)] 0x00007ffff037f8a0 in raise () from /lib/libc.so.6 `

EDIT: Still Having the same problems even after kdenlive updates.