前言
由于H265专利费用问题，Chrome浏览器并没有支持软解码。在105版本以后，Chrome浏览器通过调用硬件（CPU的集成显卡或者英伟达的独立显卡）的API接口，实现硬解码，绕过了专利费用的问题。
检测硬件是否支持HEVC硬件解码
需要使用DXVAChecker检测软件
下载链接
https://bluesky-soft.com/en/DXVAChecker.html
浏览器配置
1 打开帮助->关于，查看版本号是否大于104
2 地址栏输入chrome://settings,搜索硬件加速， 使用硬件加速开启
出现如图，说明没有执行这一步
3 地址栏输入chrome://flags，搜索hardware,启用Hardware-accelerate video decode硬件解码
4 创建Chrome快捷方式，鼠标右键点击属性，添加启动运行参数：
--enable-features="PlatformHEVCDecoderSupport" （切记--前面空格）
5通过快捷方式打开，地址栏输入chrome://gpu，搜索Video Acceleration,验证Chrome是否启动成功
6硬件支持
出现如图的提示，需要搜索Problems Detected，查看相关的检测问题
* Some drivers are unable to reset the D3D device in the GPU process sandbox
Applied Workarounds: exit_on_context_lost
* Unpacking overlapping rows from unpack buffers is unstable on NVIDIA GL driver:
(http://crbug.com/596774)
Applied Workarounds: unpack_overlapping_rows_separately_unpack_buffer
* Disable KHR_blend_equation_advanced until cc shaders are updated:
(http://crbug.com/661715)
Applied Workarounds: disable(GL_KHR_blend_equation_advanced),
disable(GL_KHR_blend_equation_advanced_coherent)
* Decode and Encode before generateMipmap for srgb format textures on Windows:
(http://crbug.com/634519)
Applied Workarounds: decode_encode_srgb_for_generatemipmap
* Expose WebGL's disjoint_timer_query extensions on platforms with site isolation:
(http://crbug.com/808744), (http://crbug.com/870491)
Applied Workarounds: enable_webgl_timer_query_extensions
* Per NVIDIA, software and hardware overlays don't work properly prior to this driver.:
(http://crbug.com/911349), (http://crbug.com/1113893)
Applied Workarounds: disable_direct_composition_video_overlays
* Disable GL_MESA_framebuffer_flip_y for desktop GL:
(http://crbug.com/964010)
Applied Workarounds: disable(GL_MESA_framebuffer_flip_y)
* Disable D3D11VideoDecoder due to crashes on NVIDIA on older drivers:
(http://crbug.com/1041166)
Applied Workarounds: disable_d3d11_video_decoder
* Disable software overlays for Intel GPUs. All Skylake+ devices support hw overlays, older devices peform poorly.:
(http://crbug.com/1192748)
Applied Workarounds: disable_direct_composition_sw_video_overlays
* Only enable video processor super resolution on Intel Gen10+ GPUs and NVIDIA GPUs with 530+ drivers:
(http://crbug.com/1318380)
Applied Workarounds: disable_vp_super_resolution
* Disable hardware MFT Av1 encoder on machines with multiple GPUs except Intel alchemist GPUs:
(http://crbug.com/1367038)
Applied Workarounds: disable_accelerated_av1_encode
* Disable VP9 HW encode on Intel GPUs preceding Ice Lake:
(http://crbug.com/1217298), (http://crbug.com/1107331)
Applied Workarounds: disable_accelerated_vp9_encode
* Only enable video processor auto HDR on NVIDIA GPUs with 550.50+ driver:
(http://crbug.com/1445741)
Applied Workarounds: disable_vp_auto_hdr
* Corruption when consecutive VP9 keyframes are requested from MFVEA on Intel.:
(http://crbug.com/1473665)
Applied Workarounds: avoid_consecutive_keyframes_for_vp9里面的数据特别重要：
* Disable D3D11VideoDecoder due to crashes on NVIDIA on older drivers:
(http://crbug.com/1041166)
Applied Workarounds: disable_d3d11_video_decoderChromium 使用 D3D11VideoDecoder 调用 D3D11VA （无需安装插件）完成硬解，和 VLC 等视频播放器用的解码器相同。如果提示上面的错误，说明需要更新显卡驱动
浏览器验证
直接拖拽一个H265编码格式的MP4文件到浏览器，可以播放，说明设置成功