根据官方文档，我的 GPU Geforce 920M 支持多种视频编解码器
http://us.download.nvidia.com/XFree86/Linux-x86_64/418.56/README/supportedchips.html
http://us.download.nvidia.com/XFree86/Linux-x86_64/418.56/README/vdpausupport.html
我按照说明安装 libvdpau 、 VDPAU ，并从 ubuntu 存储库安装了最新的 NVIDIA 显卡
虽然我的系统无法识别 NVIDIA GPU 上的任何视频解码器，但如何解决这个问题
joseph@joseph-X541UJ:~$ export VDPAU_NVIDIA_DEBUG=3
joseph@joseph-X541UJ:~$ export VDPAU_TRACE=1
joseph@joseph-X541UJ:~$ sudo ln -s /usr/lib/nvidia-current/vdpau/libvdpau_nvidia.so /usr/lib/libvdpau_nvidia.so
[sudo] password for joseph:
ln: failed to create symbolic link '/usr/lib/libvdpau_nvidia.so': File exists
joseph@joseph-X541UJ:~$ sudo mv /usr/lib/libvdpau_nvidia.so.backup /usr/lib/libvdpau_nvidia.so
mv: cannot stat '/usr/lib/libvdpau_nvidia.so.backup': No such file or directory
joseph@joseph-X541UJ:~$ sudo ln -s /usr/lib/nvidia-current/vdpau/libvdpau_nvidia.so /usr/lib/libvdpau_nvidia.so
ln: failed to create symbolic link '/usr/lib/libvdpau_nvidia.so': File exists
joseph@joseph-X541UJ:~$ sudo mv /usr/lib/libvdpau_nvidia.so.backup /usr/lib/libvdpau_nvidia.so
mv: cannot stat '/usr/lib/libvdpau_nvidia.so.backup': No such file or directory
joseph@joseph-X541UJ:~$ vdpauinfo
display: :0 screen: 0
VDPAU capture: Enabled
vdp_imp_device_create_x11(0x55731ce33e70, 0, -, -)
GPU at BusId 0x1 doesn't have a supported video decoder
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library 418.56 Fri Mar 15 12:31:51 CDT 2019
VDPAU nvidia: Error detected 9 373 3
VDPAU nvidia: Backtrace:
--: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d51d000] DSO load base
00: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d55551c]
01: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d544033]
02: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d5274f1] vdp_imp_device_create_x11
-> 1
Error creating VDPAU device: 1
这是使用 MPV 播放器播放 YouTube 视频时的输出
joseph@joseph-X541UJ:~$ export VDPAU_TRACE_FILE=mplayer.log
joseph@joseph-X541UJ:~$ export VDPAU_TRACE_FILE=mpv.log
joseph@joseph-X541UJ:~$ https://www.youtube.com/watch?v=Spk6GyOzjwQ
bash: https://www.youtube.com/watch?v=Spk6GyOzjwQ: No such file or directory
joseph@joseph-X541UJ:~$ sudo nano .config/mpv/mpv.conf
joseph@joseph-X541UJ:~$ mpv https://www.youtube.com/watch?v=Spk6GyOzjwQ
Playing: https://www.youtube.com/watch?v=Spk6GyOzjwQ
(+) Video --vid=1 (*) (h264 1920x1080 60.000fps)
(+) Audio --aid=1 --alang=eng (*) 'DASH audio' (opus 2ch 48000Hz) (external)
GPU at BusId 0x1 doesn't have a supported video decoder
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library 418.56 Fri Mar 15 12:31:51 CDT 2019
VDPAU nvidia: Error detected 9 373 3
VDPAU nvidia: Backtrace:
--: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f296517c000] DSO load base
00: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f29651b451c]
01: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f29651a3033]
02: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f29651864f1] vdp_imp_device_create_x11
AO: [pulse] 48000Hz stereo 2ch float
[ffmpeg/video] h264: Hardware is lacking required capabilities
[ffmpeg/video] h264: Failed setup for format cuda: hwaccel initialisation returned error.
VO: [gpu] 1920x1080 yuv420p
AV: 00:00:57 / 00:32:30 (2%) A-V: 0.000 Dropped: 24 Cache: 46s+32MB
[ffmpeg] NULL: Invalid NAL unit size (5001 > 2466).
[ffmpeg] NULL: missing picture in access unit with size 2470
Exiting... (Quit)