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Full Version: The sunxi transform module is very slow, how to do video rotation?

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I want to rotate the video, I used the sunxi transform module. But I found that the sunxi transform module is very slow, I rotate a 640x360 yuv420 video buffer, the performance is 10fps! It's too slow to do any thing. What the sunxi transform use for? If I need to rotate 4k video @ 30fps, how can I do that?

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jacklau