安装了 HEVC 拓展还是无法 decode 可能是什么原因 - V2EX

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升级到 Windows 11

This topic created in 1458 days ago, the information mentioned may be changed or developed.

AMD2600+GTX760 ，win11 ，HEVC 拓展版本 1.0.50361.0
此前没装拓展，原生播放器直接打不开，提示安装插件，这里没问题
安装拓展后，虽然可以播放，但任务管理器中 gpu 并没有在 decode ，也就还是在软解，这里看不懂了
官方拓展的详情描述有这么一句：对于没有硬件支持 HEVC 视频的设备，将提供软件支持，但播放体验可能会因视频分辨率和电脑性能而有所不同
看起来好像是硬件不支持 HEVC ，但我查了 GTX760 是支持 H265 解码的

5 replies 2022-04-30 05:45:05 +08:00

1

mons

Apr 30, 2022

GTX 760 的 NVDEC 只支持 MPEG-1 MPEG-2 H.264 硬解。不支持 H.265 硬解。

https://en.wikipedia.org/wiki/Nvidia_NVDEC#GPU_support

https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new

2

haoyh1

OP

Apr 30, 2022

@mons 奇怪了，之前记得查是支持的，还有在这里发现 750 都支持 VP9 ，HEVC
760 竟然都不支持，这法也太溜了

3

ysc3839

Apr 30, 2022

GTX760 不支持 H.265 解码
参见 NVIDIA 旧的 NVDEC Support Matrix https//web.archive.org/web/20201009010433/https://developer.nvidia.com/video-encode-decode-gpu-support-matrix

4

ysc3839

Apr 30, 2022

@haoyh1 上述列表里能看到 GTX750 是 Maxwell (2nd Gen)家族的，比 GTX760 的 Kepler 晚了许多

5

harwck

Apr 30, 2022

最少也要 Pascal 的核心才能支持 H265 Decode

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