Introduction
This document is about the VC8000 video codec used with V4L2 on the C3V platform.
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This feature needs to make some changes to GStreamer and FFmpeg source code to adapt to the v4l2 codec interface and we will provide the patches for the changes. And the kernel also needs to do some config to support the VC8000 video codec V4L2 driver.
Get the patches
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Here we assume that you have already configured GStreamer and FFMPEG in the buildroot and have built it successfully.
GStreamer
Apply the gst1-plugins-good-1.20.1.diffto <buildroot>/output/build/gst1-plugins-good-1.20.1/by the command:
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patch -p1 < gst1-plugins-good-1.20.1.diff |
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make gst1-plugins-good-rebuild |
The modified library is libgstvideo4linux2.so.
FFmpeg
Apply the ffmpeg-4.4.2.diff to <buildroot>/output/build/ffmpeg-4.4.2/ by command:
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patch -p1 < ffmpeg-4.4.2.diff |
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make ffmpeg-rebuild |
The modified library is libavcodec.so*.
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If can not find the directory in the buildroot, please check the package on the menuconfig and reconfigure it. |
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The command will encode the file 1080p.yuv to a file called stream.h264.
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The file can be played by PC tools like PotPlayer and VLC media player.
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The command will decode the file stream.h264 to a file called test.yuv.
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The file can be played by PC tools like Elecard YUV viewer and YuvEye.
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