# 视频叠加用例

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

该 pipeline 展示了视频叠加的用例。这些用例使用 [qtioverlay](https://docs.qualcomm.com/doc/80-70017-50SC/topic/qtioverlay.html) 插件的 *overlay-mask* 属性中的 *dest-rect* 属性坐标。

在运行用例之前，请确保完成[多媒体用例](https://docs.qualcomm.com/doc/80-70017-50SC/topic/multimedia-use-cases.html)中提到的先决条件。

注释： 以下用例中的命令使用 720p 分辨率。如需更改分辨率，请在该分辨率的命令中更新相应的 *dest-rect* 属性坐标。关于更多详细信息，请参阅 [qtioverlay](https://docs.qualcomm.com/doc/80-70017-50SC/topic/qtioverlay.html)。

## 用户文本叠加

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

此 pipeline 将​​文本覆盖到视频流上。

- 叠加在视频上：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 filesrc location=/opt/<H264_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-text="text0, text=\"Qualcomm\ Intelligence\", color=(uint)0xFFFF00FF, dest-rect=<160, 624, 944, 50>;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上文本叠加的 pipeline – 文件源
                    
                    ![](data:image/png;base64,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)
- 覆盖来自摄像头的实时流：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-text="text0, text=\"Qualcomm\ Intelligence\", color=(uint)0xFFFF00FF, dest-rect=<160, 624, 944, 50>;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上文本叠加的 pipeline —摄像头源
                    
                    ![](data:image/png;base64,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)

## 日期和时间叠加

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

此 pipeline 显示要叠加到视频流上的日期（以 MMDDYYYY 为单位）和时间（以 HHMMSS 为单位）。

- 叠加在视频上：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 filesrc location=/opt/<H264_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-date="date0, date-format=\"MMDDYYYY\", time-format=\"HHMMSS_24HR\", color=(uint)0xFF00FFFF, dest-rect=<400, 400, 256, 80>;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上文本日期和时间叠加的 pipeline - 文件源
                    
                    ![](data:image/png;base64,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)
- 覆盖来自摄像头的实时流：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-date="date0, date-format=\"MMDDYYYY\", time-format=\"HHMMSS_24HR\", color=(uint)0xFF00FFFF, dest-rect=<400, 400, 256, 80>;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上文本日期和时间叠加的 pipeline- 摄像头源
                    
                    ![](data:image/png;base64,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)

## 静态图像叠加

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

该 pipeline 展示了如何将静态图像叠加到视频流上。

1. 将静态图像推送到设备：

        scp -r <static_image>.rgba  root@[DEVICE IP-ADDR]:/optCopy to clipboard
2. 运行用例：
    - 叠加在视频上：

            setprop persist.overlay.use_c2d_blit 2Copy to clipboard

            gst-launch-1.0 filesrc location=/opt/<H264_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-simg="image0, image=\"/opt/overlay_test_464_109.rgba\", resolution=<464, 109>, dest-rect=<140, 130, 464, 109>;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上静态图像叠加的 pipeline - 文件源
                            
                            ![](data:image/png;base64,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)
    - 覆盖来自摄像头的实时流：

            setprop persist.overlay.use_c2d_blit 2Copy to clipboard

            gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-simg="image0, image=\"/opt/overlay_test_464_109.rgba\", resolution=<464, 109>, dest-rect=<140, 130, 464, 109>;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上静态图像叠加的 pipeline —摄像头源
                            
                            ![](data:image/png;base64,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)

## 边界框叠加

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

此 pipeline 展示了如何将带有标签的边界框覆盖到视频流上。

- 叠加在视频上：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 filesrc location=/opt/<H264_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-bbox="bbox0, bbox=<140, 130, 100, 100>, label="Pet", color=0x0000FFFF;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频边界框叠加 pipeline — 文件来源
                    
                    ![](data:image/png;base64,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)
- 覆盖来自摄像头的实时流：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-bbox="bbox0, bbox=<140, 130, 100, 100>, label="Pet", color=0x0000FFFF;" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频边界框叠加 pipeline — 摄像头源
                    
                    ![](data:image/png;base64,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)

## 反向隐私掩码

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

此 pipeline 演示如何在视频流上叠加反向隐私掩码。

反向隐私掩码应用于除 *overlay-mask* 属性中的 *circle* 之外的所有其他区域。

以下是运行此示例的命令：

- 叠加在视频上：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 filesrc location=/opt/<input_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-mask="mask0, circle=<640, 360, 200>, inverse=true, dest-rect=<0, 0, 1280, 720>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上逆向隐私遮罩叠加的 pipeline - 文件来源
                    
                    ![](data:image/png;base64,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)
- 覆盖来自摄像头的实时流：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-mask="mask0, circle=<960, 540, 400>, inverse=true, dest-rect=<0, 0, 1920, 1080>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频逆向隐私遮罩叠加 pipeline — 摄像头源
                    
                    ![](data:image/png;base64,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)

## 非反向隐私掩码

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

此 pipeline 演示如何将非反向隐私掩码叠加到视频流上。

以下是运行此示例的命令：

- 叠加在视频上：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 filesrc location=/opt/<input_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-mask="mask0, circle=<640, 360, 200>, dest-rect=<0, 0, 1280, 720>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上非逆隐私遮罩叠加的 pipeline - 文件源
                    
                    ![](data:image/png;base64,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)
- 覆盖来自摄像头的实时流：

        setprop persist.overlay.use_c2d_blit 2Copy to clipboard

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-mask="mask0, circle=<960, 540, 400>, dest-rect=<0, 0, 1920, 1080>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard

Figure : 视频上非逆隐私遮罩叠加的 pipeline — 摄像头源
                    
                    ![](data:image/png;base64,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)

## 多边形隐私掩码

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/overlay-use-cases.html)

一个多边形隐私掩码使您能够使用多边形在图像上创建隐私区域。使用多边形可以灵活地使掩码更平滑、更准确。

- 多边形隐私遮罩应用于多边形内封闭的区域。
- 逆多边形隐私遮罩应用于除多边形内封闭区域之外的所有区域。

在开始之前，请配置显示：

    export XDG_RUNTIME_DIR=/dev/socket/weston && export WAYLAND_DISPLAY=wayland-1Copy to clipboard

    setprop persist.overlay.use_c2d_blit 2Copy to clipboard

### 启用多边形隐私遮罩

- Filesrc：

        gst-launch-1.0 filesrc location=/opt/<input_file>.mp4 ! qtdemux ! queue ! h264parse !  v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-mask="mask0, polygon=<5, <360, 640, 780, 500, 300>, <360, 540, 180, 180, 100>>, dest-rect=<0, 0, 1280, 720>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard
- 摄像头：

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-mask="mask0, polygon=<5, <360, 640, 780, 500, 300>, <360, 540, 180, 180, 100>>, dest-rect=<0, 0, 1920, 1080>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard

### 启用反多边形隐私遮罩

- Filesrc：

        gst-launch-1.0 filesrc location=/opt/<input_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtioverlay overlay-mask="mask0, polygon=<3, <360, 640, 780>, <360, 540, 180>>, inverse=true, dest-rect=<0, 0, 1280, 720>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard
- 摄像头：

        gst-launch-1.0 -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-mask="mask0, polygon=<3, <360, 640, 780>, <360, 540, 180>>, inverse=true, dest-rect=<0, 0, 1920, 1080>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard

### 在 runtime 更新多边形隐私遮罩属性

1. 设置隐私遮罩：

        gst-pipeline-app -e qtiqmmfsrc ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080,framerate=30/1,compression=ubwc ! qtioverlay overlay-mask="mask0, polygon=<7, <360, 640, 780, 640, 500, 360, 180>, <360, 360, 180, 120, 200, 120, 180>>, inverse=true, dest-rect=<0, 0, 1920, 1080>, color=0x202020FF" ! waylandsink fullscreen=trueCopy to clipboard
2. 在 pipeline 控件中，选择 `Playing mode - 3`。
3. 要更改 pipeline 控件中的属性，请选择 `Plugin mode -
                        p`。
4. 从插件中选择 `overlay - 2`。
5. 在插件属性中，选择 `overlay-mask - 4`。
6. 添加以下值：

        mask0, polygon=<5, <360, 640, 780, 500, 300>, <360, 540, 180, 180, 100>>, inverse=true, dest-rect=<0, 0, 1920, 1080>, color=0x202020FFCopy to clipboard

Last Published: Nov 11, 2025

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