[FFmpeg-trac] #7375(avdevice:new): kmsgrab not working on AMD cards
FFmpeg
trac at avcodec.org
Thu Aug 23 07:53:11 EEST 2018
#7375: kmsgrab not working on AMD cards
------------------------------------+--------------------------------------
Reporter: tildearrow | Type: defect
Status: new | Priority: normal
Component: avdevice | Version: git-master
Keywords: kmsgrab | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+--------------------------------------
Description:
kmsgrab seems to not work on AMD cards, or at least the one I tested with.
Steps to reproduce:
{{{
$ sudo ./ffmpeg -report -f kmsgrab -device /dev/dri/card1 -i - -vf
'hwdownload,format=bgr0' -c:v rawvideo -f avi -y /dev/null
ffmpeg started on 2018-08-22 at 23:39:54
Report written to "ffmpeg-20180822-233954.log"
ffmpeg version N-91666-g70d2bab80b Copyright (c) 2000-2018 the FFmpeg
developers
built with gcc 8.2.0 (GCC)
configuration: --disable-everything --enable-gpl --enable-libdrm
--enable-indev=kmsgrab --enable-decoder=wrapped_avframe --enable-
encoder=rawvideo --enable-filter=format --enable-filter=hwdownload
--enable-protocol=file --enable-muxer=avi
libavutil 56. 19.100 / 56. 19.100
libavcodec 58. 24.101 / 58. 24.101
libavformat 58. 17.103 / 58. 17.103
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 26.100 / 7. 26.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
[kmsgrab @ 0x5557f5102a00] Using plane 41 to locate framebuffers.
[kmsgrab @ 0x5557f5102a00] Template framebuffer is 95: 3840x2160 32bpp 24b
depth.
Input #0, kmsgrab, from 'pipe:':
Duration: N/A, start: 1534999194.427423, bitrate: N/A
Stream #0:0: Video: wrapped_avframe, drm_prime, 3840x2160, 30 tbr,
1000k tbn, 1000k tbc
Stream mapping:
Stream #0:0 -> #0:0 (wrapped_avframe (native) -> rawvideo (native))
[AVHWFramesContext @ 0x5557f5105980] Failed to map DRM object 5 to memory:
1.
[hwdownload @ 0x5557f5113900] Failed to download frame: -1.
Error while filtering: Operation not permitted
Failed to inject frame into filter network: Operation not permitted
Error while processing the decoded data for stream #0:0
Conversion failed!
}}}
Additional information:
Attached FFmpeg log.
No extra messages in the kernel log have been generated.
This may actually be a problem in amdgpu rather than FFmpeg, but I am not
sure.
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
System specifications:
{{{
CPU: Quad core Intel Core i7-6700K (-MT-MCP-) cache: 8192 KB
clock speeds: max: 4001 MHz 1: 4050 MHz 2: 4025 MHz 3: 4000 MHz
4: 4095 MHz 5: 4001 MHz
6: 4004 MHz 7: 4063 MHz 8: 4015 MHz
Graphics: Card-1: Intel HD Graphics 530
Card-2: Advanced Micro Devices [AMD/ATI] Vega 10 XTX [Radeon
Vega Frontier Edition]
Display Server: x11 (X.Org 1.20.0 ) driver: modesetting
Resolution: 3840x2160
OpenGL: renderer: Radeon Vega Frontier Edition (VEGA10, DRM
3.26.0, 4.18.3-zen1-1-zen, LLVM 6.0.1)
version: 4.5 Mesa 18.1.6
}}}
uname -a:
{{{
Linux linux 4.18.3-zen1-1-zen #1 ZEN SMP PREEMPT Sat Aug 18 09:23:50 UTC
2018 x86_64 GNU/Linux
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7375>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list