https://bugs.kde.org/show_bug.cgi?id=409269
Bug ID: 409269
Summary: nvenc
Product: kdenlive
Version: 19.04.2
Platform: Mint (Ubuntu based)
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Video Display & Export
Assignee: j...@kdenlive.org
Reporter: louise9...@gmail.com
Target Milestone: ---
SUMMARY
Video Renders but only produces sound/audio when using ANY nvenc or cuda
codecs. FFmpeg is compiled with cuda, nvenc, etc support. I play in ANY player
and it will only play the sound of the video with a black screen(instead of
video) and a black thumbnail when video is closed. When I immediately go to
render the video after saving, a prompt(about my custom render profile for mp4)
comes up in my render profile saying "Unsupported video codec: h264_nvenc" with
an error sign right next to my profile. After deleting and recreating the same
render profile, the prompt goes away and I can happily render but video engine
utilization is 0 percent while gpu is up and down in the 20 percent range.As
said earlier, the output of the render results in a black screen with playing
audio no matter what player used. This does NOT happen on kdenlive 17.xx.xx
when install from official software repositories for Ubuntu 18.04/Mint 19.1.
Video is rendered perfectly with sound and video and video engine utilization
is around 14-20 percent. To be 100 percent sure its not my ffmpeg compile being
crap(or maybe it is I just dont know 100 percent yet) I installed shotcut as a
test(just because) and it renders with nvenc, cuda just fine. The second
problem i am having(this feature isnt available in 17.xx.xxx so only reserved
for 19.xxx.xxx) is using nvenc on the timeline preview, proxies and preview
render. Using nvenc on proxies, timeline, preview render result in a failure
prompt that reads "Unknown decoder 'h264_cuvid'". When using regular x264 in
place of nvenc in the above mentioned ways it works 100 percent normally. This
is repeatable in the snap & flatpak versions. In the Appimage I dont even have
the option to enable gpu movit libary even when changing the env variables to
my own compiled libaries. This is on nvidia 430.26 driver as well as cuda 10.1
update 1. And the OS is Linux Mint 19.1.
STEPS TO REPRODUCE
1.
2.
3.
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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