Introduction
This document is about the VC8000 codec used with V4L2 on the C3V platform.
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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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Here just introduce the basic usage with default parameters for H.264 and JPEG. If you need to change the codec parameters, please follow the usage of GStreamer and FFmpeg.
V4L2 Sample
Test sample(please decompress it for use):
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This test needs a YUV source file, you can use the GStreamer to generate one:
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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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