FFMPEG silently falls back to software encoding on AMD GPU
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Mesa |
New
|
Undecided
|
Unassigned | ||
ffmpeg (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
mesa (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned |
Bug Description
FFMPEG hardware encoding fails on AMD hardware:
Passing -hwaccel vaapi flag as per command below:
Command used was:
ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_
Will silently fail and transcoding will be done on CPU silently when using on AMD GPU.
The only sign that something is wrong is this WARNING:
[hevc_vaapi @ 0x55f2ca003e80] Driver does not support some wanted packed headers (wanted 0xd, found 0x1).
and for h264:
Press [q] to stop, [?] for help
[h264_vaapi @ 0x55762dd4de80] Driver does not support some wanted packed headers (wanted 0xd, found 0x1).
During transcode operation CPU usage is high, and GPU usage is zero. FFPROBE on OUTPUT.MKV reports that encoder used was software.
My syste: Thinkpad T14s (AMD Ryzen7) Ubuntu Mate 21.04 (5.11)
bash $ sudo inxi -x -G
Graphics: Device-1: Advanced Micro Devices [AMD/ATI] Renoir vendor: Lenovo driver: amdgpu v: kernel
bus ID: 07:00.0
Display: server: X.Org 1.20.11 driver: loaded: amdgpu,ati unloaded: fbdev,modesetti
OpenGL: renderer: AMD RENOIR (DRM 3.40.0 5.11.0-18-generic LLVM 11.0.1) v: 4.6 Mesa 21.0.1
direct render: Yes
description: | updated |
tags: | added: vaapi |
Changed in ffmpeg (Ubuntu): | |
status: | New → Invalid |
tags: | added: hirsute |
Norbert, it looks like you were using Ubuntu 21.10, which is no longer supported. Can you try with a newer Ubuntu release?