[FFmpeg-user] Green line with vaapi scaling

Carl Eugen Hoyos ceffmpeg at gmail.com
Mon Jun 18 00:21:17 EEST 2018


2018-06-17 22:32 GMT+02:00, Mark Thompson <sw at jkqxz.net>:
> On 13/06/18 21:00, André Hänsel wrote:
>>> Can you retest with git head?
>>>
>>> Build FFmpeg from source and retest.
>>
>> I don't think I can do that easily, but I found a static build on the
>> FFmpeg website. It's supposed to support VAAPI:
>>
>> # ./ffmpeg -hwaccels
>>
>> ffmpeg version N-46272-g3a56ade1f-static https://johnvansickle.com/ffmpeg/
>>  Copyright (c) 2000-2018 the FFmpeg developers
>>   built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
>>   configuration: --enable-gpl --enable-version3 --enable-static
>> --disable-debug --disable-ffplay --disable-indev=sndio
>> --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r
>> --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi
>> --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame
>> --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
>> --enable-librubberband --enable-libsoxr --enable-libspeex
>> --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab
>> --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264
>> --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
>>   libavutil      56. 18.102 / 56. 18.102
>>   libavcodec     58. 20.100 / 58. 20.100
>>   libavformat    58. 17.100 / 58. 17.100
>>   libavdevice    58.  4.100 / 58.  4.100
>>   libavfilter     7. 25.100 /  7. 25.100
>>   libswscale      5.  2.100 /  5.  2.100
>>   libswresample   3.  2.100 /  3.  2.100
>>   libpostproc    55.  2.100 / 55.  2.100
>> Hardware acceleration methods:
>> vdpau
>> vaapi
>>
>>
>> However, when I try this command:
>>
>> # ./ffmpeg -loglevel trace -vaapi_device /dev/dri/renderD128 -hwaccel
>> vaapi -i bbb.mp4 out.mp4
>>
>> ffmpeg version N-46272-g3a56ade1f-static https://johnvansickle.com/ffmpeg/
>>  Copyright (c) 2000-2018 the FFmpeg developers
>>   built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
>>   configuration: --enable-gpl --enable-version3 --enable-static
>> --disable-debug --disable-ffplay --disable-indev=sndio
>> --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r
>> --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi
>> --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame
>> --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
>> --enable-librubberband --enable-libsoxr --enable-libspeex
>> --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab
>> --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264
>> --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
>>   libavutil      56. 18.102 / 56. 18.102
>>   libavcodec     58. 20.100 / 58. 20.100
>>   libavformat    58. 17.100 / 58. 17.100
>>   libavdevice    58.  4.100 / 58.  4.100
>>   libavfilter     7. 25.100 /  7. 25.100
>>   libswscale      5.  2.100 /  5.  2.100
>>   libswresample   3.  2.100 /  3.  2.100
>>   libpostproc    55.  2.100 / 55.  2.100
>> Splitting the commandline.
>> Reading option '-loglevel' ... matched as option 'loglevel' (set logging
>> level) with argument 'trace'.
>> Reading option '-vaapi_device' ... matched as option 'vaapi_device' (set
>> VAAPI hardware device (DRM path or X11 display name)) with argument
>> '/dev/dri/renderD128'.
>> Reading option '-hwaccel' ... matched as option 'hwaccel' (use HW
>> accelerated decoding) with argument 'vaapi'.
>> Reading option '-i' ... matched as input url with argument 'bbb.mp4'.
>> Reading option 'out.mp4' ... matched as output url.
>> Finished splitting the commandline.
>> Parsing a group of options: global .
>> Applying option loglevel (set logging level) with argument trace.
>> Applying option vaapi_device (set VAAPI hardware device (DRM path or X11
>> display name)) with argument /dev/dri/renderD128.
>> [AVHWDeviceContext @ 0x6189cc0] No VA display found for device:
>> /dev/dri/renderD128.
>> Device creation failed: -22.
>> Failed to set value '/dev/dri/renderD128' for option 'vaapi_device':
>> Invalid argument
>> Error parsing global options: Invalid argument
>>
>>
>> According to strace it doesn't even try to open the device.
>
> libva generally depends on the dynamic linker to work - it loads
> the driver at runtime.
>
> It looks like this is built with CONFIG_VAAPI but not HAVE_VAAPI_X11
> or HAVE_VAAPI_DRM

Shouldn't an explicit error be printed in this case?

Carl Eugen


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