# 视频转码

Source: [https://docs.qualcomm.com/doc/80-70014-50Y/topic/gst-video-transcode-example.html](https://docs.qualcomm.com/doc/80-70014-50Y/topic/gst-video-transcode-example.html)

此 **gst-video-transcode-example** 程序支持 AVC 到 HEVC 或 HEVC 到 AVC 格式的视频转码。可以使用此程序的一些常见场景是视频编辑、安全摄像头和增强现实。

该图显示了 pipeline，该 pipeline 读取传入流，对其进行解码和编码，并在屏幕上显示转码后的输出，或保存到文件中。有关此 pipeline 中使用的插件的信息，请参阅 [Pipeline 流程](https://docs.qualcomm.com/doc/80-70014-50Y/topic/gst-video-transcode-example.html#gst-video-transcode-example__section_rdl_ysg_4bc)。

Figure : gst-video-transcode-example pipeline
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)

## 前提条件

- 在 Permissive 模式下启用 SSH 以安全访问主机设备。相关说明，可参见 [SSH 使用指南](https://docs.qualcomm.com/bundle/publicresource/topics/80-70014-254/how_to.html#how-to-ssh-)
- 使用以下命令进入 SSH shell 并执行用例：

        ssh root@<ip-addr of the target device>Copy to clipboard
- 运行以下命令以启用 Permissive 模式：

        setenforce 0Copy to clipboard
- 运行以下命令，开启显示屏：

        export XDG_RUNTIME_DIR=/dev/socket/weston && export WAYLAND_DISPLAY=wayland-1Copy to clipboard
- 运行以下命令，从主机推送文件：

        scp <filename> root@<IP address of target device>:/opt/Copy to clipboard

## 用例

下表列出了 gst-video-transcode-example 程序的常见用例可以执行的操作：| 用例 | 操作 |
| --- | --- |
| 视频编辑 | 旋转、翻转或调整视频大小 |
| 安全摄像头 | 反转或旋转视频图像以补偿摄像头安装不当的情况。 |
| 增强现实 | 缩放或旋转视频源以与虚拟组件同步。 |

执行以下操作以执行转码用例：

1. 将视频文件加载到设备上。
2. 使用以下命令对视频文件进行转码：

        gst-video-transcode-example -i /opt/<input-file>.mp4 -c <format> -o /opt/<output-file>.mp4    Copy to clipboard

下表提供了命令行参数的说明：    | 命令行参数 | 说明 |
    | --- | --- |
    | `-1` | 指定 MP4 输入文件的绝对路径 |
    | `-c` | 指定*输入*文件的视频编解码器。<ul class="ul" id="gst-video-transcode-example__ul_wrj_d5g_4bc"><br>                                            <li class="li"><code class="ph codeph">1</code> = AVC（H.264）</li><br><br>                                            <li class="li"><code class="ph codeph">2</code> = HEVC（H.265）</li><br><br>                                        </ul> |
    | `-o` | 指定保存转码后的 MP4 文件的绝对路径 |

    使用以下命令执行不同视频格式的用例：

    - 从 AVC 转码到 HEVC：

            gst-video-transcode-example -i /opt/<avc>.mp4 -c 1 -o /opt/<hevc>.mp4Copy to clipboard
    - 从 HEVC 转码到 AVC：

            gst-video-transcode-example -i /opt/<hevc>.mp4 -c 2 -o /opt/<avc>.mp4Copy to clipboard

如需停止用例，请按下 CTRL + C。

## 预期输出

视频流从 H.264 转码为 H.265，然后再转回 H.264 格式。

## Pipeline 流程

下表列出了视频转码 pipeline 中使用的插件：| 插件 | 说明 |
| --- | --- |
| filesrc | 读取视频流。 |
| qtdemux | 将流解复用为单独的音频和视频流。 |
| h264parse | 解析 H.264 视频流。 |
| h265parse | 解析 H.265 视频流。 |
| [v4l2h264dec](https://docs.qualcomm.com/doc/80-70014-50Y/topic/v4l2h264dec.html) | 使用 Video4Linux 解码 H.264 视频流。 |
| [v4l2h265dec](https://docs.qualcomm.com/doc/80-70014-50Y/topic/v4l2h265dec.html) | 使用 Video4Linux 解码 H.265 视频流。 |
| [Waylandsink](https://docs.qualcomm.com/doc/80-70014-50Y/topic/waylandsink.html) | 在 Wayland 显示器上显示 H.264 视频流。 |
| filesink | 将 H.265 视频写入 YUV 文件进行播放。 |

下表提供了有关如何处理解码的视频流以生成转码输出的信息：| 视频格式 | 说明 |
| --- | --- |
| H.264 | <ol class="ol" id="gst-video-transcode-example__ol_nk2_bwh_4bc"><br>                                        <li class="li"><a href="https://docs.qualcomm.com/doc/80-70014-50Y/topic/v4l2h265enc.html">v4l2h265enc</a> 将解码的 H.264 视频编码为 H.265 格式。</li><br><br>                                        <li class="li">h265parse 解析 H.265 视频流。</li><br><br>                                        <li class="li">mp4mux 将流多路复用到 MP4 容器中。</li><br><br>                                        <li class="li">filesink 将流数据写入文件。</li><br><br>                                    </ol><br><br>                                    <br>AVC（H.264）视频转码为 HEVC（H.265）格式。 |
| H.265 | <ol class="ol" id="gst-video-transcode-example__ol_zfg_fwh_4bc"><br>                                        <li class="li"><a href="https://docs.qualcomm.com/doc/80-70014-50Y/topic/v4l2h264enc.html">v4l2h264enc</a> 将解码的 H.265 视频编码为 H.264 格式。</li><br><br>                                        <li class="li">h264parse 解析 H.264 视频流。</li><br><br>                                        <li class="li">mp4mux 将流多路复用到 MP4 容器中。</li><br><br>                                        <li class="li">filesink 将流数据写入文件。</li><br><br>                                    </ol><br><br>                                    <br>HEVC（H.265）视频转码为 AVC（H.264）格式。 |

**Parent Topic:** [视频和音频的示例程序](https://docs.qualcomm.com/doc/80-70014-50Y/topic/audio-sample-applications.html)

Last Published: Nov 11, 2025

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