---
title: 推荐编码参数
description: "针对输入的test.yuv为1080p场景，恒定码率编码（帧率为$fps，码率为$bitrate）推荐编码参数。"
url: https://www.hikunpeng.com/document/detail/zh/boostmedia/hw265/kunpengcps_hw265enc_06_0016.html
sourcePath: /source/zh/boostmedia/hw265/kunpengcps_hw265enc_06_0016.html
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---
# 推荐编码参数

针对输入的test.yuv为1080p场景，恒定码率编码（帧率为$fps，码率为$bitrate）推荐编码参数。

- 低时延

```
ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 6 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 0 -bframe_nums 0 -delay 1 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4
```


- 高清

```
ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 6 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 0 -bframe_nums 3 -delay 4 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4
```


- 点播

```
ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 2 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 1 -bframe_nums 7 -delay 25 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4
```


- 无编码场景要求

```
ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 6 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 0 -bframe_nums 3 -delay 4 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4
```


- 开启HDR10功能

```
ffmpeg -f rawvideo -pix_fmt yuv420p10le -s 1920x1080 -i test.yuv -bf 0 -c:v libhw265 -wpp_threads 4 -hdrMode 1 -max-cll 1000 -max-fall 300 -primaries-x0 8500 -primaries-y0 39850 -primaries-x1 6550 -primaries-y1 2300 -primaries-x2 35400 -primaries-y2 14600 -white-x 15630 -white-y 16450 -max-luminance 10000000 -min-luminance 1 -atc-sei 2 -color_p 9 -transfer 16 -col_matrix 9 -fullrange 1 -y output.mp4
```


- 开启HDR vivid功能

```
ffmpeg -f rawvideo -pix_fmt yuv420p10le -s 1920x1080 -i test.yuv -bf 0 -c:v libhw265 -wpp_threads 4 -hdrMode 2 -max-cll 1000 -max-fall 300 -primaries-x0 8500 -primaries-y0 39850 -primaries-x1 6550 -primaries-y1 2300 -primaries-x2 35400 -primaries-y2 14600 -white-x 15630 -white-y 16450 -max-luminance 10000000 -min-luminance 1 -atc-sei 2 -color_p 9 -transfer 16 -col_matrix 9 -fullrange 1 -y output.mp4
```


  如需按HDR10或HDR vivid标准编码视频，请参见表1进行参数配置。

**表1 参数说明**

| 参数名称 | 参数含义 | 固定标准值 |
| --- | --- | --- |
| \-atc\-sei 2 | tranfer | 2 |
| \-transfer 16 | 传输特性（SMPTE2084） | 16 |
| \-color\_p 9 | 原色（BT.2020） | 9 |
| \-col\_matrix 9 | 矩阵系数（BT2020NC） | 9 |
| \-repeatHeaders 0 | 不重复头信息 | 0 |