Public bug reported:
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_output_format vaapi -ss 15 -i input.mp4 -t 25 -c:v h264_vaapi
-global_quality 15 -c:a copy -map 0 output.mkv
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
Device-2: Chicony Integrated Camera type: USB driver: uvcvideo bus
ID: 2-2:2
Display: server: X.Org 1.20.11 driver: loaded: amdgpu,ati unloaded:
fbdev,modesetting,vesa
resolution: 1920x1080~60Hz
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
** Affects: ffmpeg (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
- -hwaccel vaapi silently on AMD GPU gives the following error:
+ 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_output_format vaapi -ss 15 -i input.mp4 -t 25 -c:v h264_vaapi
+ -global_quality 15 -c:a copy -map 0 output.mkv
+
+
+ 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
+ and for h264:
+
Press [q] to stop, [?] for help
[h264_vaapi @ 0x55762dd4de80] Driver does not support some wanted packed
headers (wanted 0xd, found 0x1).
- Command used was:
+ During transcode operation CPU usage is high, and GPU usage is zero. FFPROBE
on OUTPUT.MKV reports that encoder used was software.
- ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD129
- -hwaccel_output_format vaapi -ss 15 -i input.mp4 -t 15 -c:v hevc_vaapi
- -global_quality 15 -c:a copy -map 0 output.mkv
-
- During transcode operation CPU usage is high, and GPU usage is zero.
- FFPROBE on OUTPUT reports that encoder used was software.
-
-
- system report: Thinkpad T14 Ubuntu Mate 21.04 (5.11)
+ 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
- Device-2: Chicony Integrated Camera type: USB driver: uvcvideo bus
ID: 2-2:2
- Display: server: X.Org 1.20.11 driver: loaded: amdgpu,ati
unloaded: fbdev,modesetting,vesa
- resolution: 1920x1080~60Hz
- 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
+ Graphics: Device-1: Advanced Micro Devices [AMD/ATI] Renoir vendor: Lenovo
driver: amdgpu v: kernel
+ bus ID: 07:00.0
+ Device-2: Chicony Integrated Camera type: USB driver: uvcvideo bus
ID: 2-2:2
+ Display: server: X.Org 1.20.11 driver: loaded: amdgpu,ati
unloaded: fbdev,modesetting,vesa
+ resolution: 1920x1080~60Hz
+ 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
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https://bugs.launchpad.net/bugs/1931045
Title:
FFMPEG silently falls back to software encoding on AMD GPU
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