linux虚拟机用gpu,虚拟机中不支持GPU虚拟化

尝试在虚拟机的linux系统中用intel cpu中itegrated gpu的hevc_qsv的功能，提示如下:

[root@localhost seq]# ./run.sh NORWAY_8K.webm vr 30 30 30

ffmpeg version n3.2.2-59-g94c76be Copyright (c) 2000-2016 the FFmpeg developers

built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11)

configuration: --enable-libmfx

libavutil 55. 34.100 / 55. 34.100

libavcodec 57. 64.101 / 57. 64.101

libavformat 57. 56.100 / 57. 56.100

libavdevice 57. 1.100 / 57. 1.100

libavfilter 6. 65.100 / 6. 65.100

libswscale 4. 2.100 / 4. 2.100

libswresample 2. 3.100 / 2. 3.100

Input #0, matroska,webm, from &＃39;NORWAY_8K.webm&＃39;:

Metadata:

encoder : Lavf57.71.100

Duration: 00:03:33.20, start: -0.007000, bitrate: 62999 kb/s

Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv, bt709/unknown/unknown), 7680x4320, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)

Stream #0:1: Audio: opus, 48000 Hz, stereo, fltp (default)

Codec AVOption idr_interval (Distance (in I-frames) between IDR frames) specified for output file #0 (vr_q30_fps_preview.ts) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

Stream mapping:

Stream #0:0 -> #0:0 (vp9 (native) -> hevc (hevc_qsv))

Stream #0:1 -> #0:1 (opus (native) -> aac (native))

Press [q] to stop, [?] for help

libva info: VA-API version 0.99.0

libva info: va_getDriverName() returns -1

libva error: va_getDriverName() failed with unknown libva error,driver_name=(null)

[AVHWDeviceContext @ 0x3484920] Failed to initialise VAAPI connection: -1 (unknown libva error).

[AVHWDeviceContext @ 0x33e9940] No VA display found for device: /dev/dri/renderD129.

[AVHWDeviceContext @ 0x33e3a00] No VA display found for device: /dev/dri/renderD130.

libva info: VA-API version 0.99.0

libva info: va_getDriverName() returns -1

libva error: va_getDriverName() failed with unknown libva error,driver_name=(null)

[AVHWDeviceContext @ 0x33e4480] Failed to initialise VAAPI connection: -1 (unknown libva error).

[AVHWDeviceContext @ 0x3484920] No VA display found for device: /dev/dri/card1.

[AVHWDeviceContext @ 0x33e50a0] No VA display found for device: /dev/dri/card2.

Failed to create a QSV device

Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

[aac @ 0x31d0220] Qavg: 39596.762

[aac @ 0x31d0220] 2 frames left in the queue on closing

Conversion failed!

原因是: 虚拟机中不支持GPU的虚拟化。

所以应该在直接装liunx的机器上运行hevc_qsv的功能。

成功时显示信息如下:

Stream mapping:

Stream #0:0 -> #0:0 (vp9 (native) -> hevc (hevc_qsv))

Stream #0:1 -> #0:1 (opus (native) -> aac (native))

Press [q] to stop, [?] for help

libva info: VA-API version 0.99.0

libva info: va_getDriverName() returns 0

libva info: User requested driver &＃39;iHD&＃39;

libva info: Trying to open /opt/intel/mediasdk/lib64/iHD_drv_video.so

libva info: Found init function __vaDriverInit_0_32

libva info: va_openDriver() returns 0