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Dvr rdk04.01.00.02 8148没有IDR帧



用此开发环境基于8148进行一路720p264编码开发,由于码率随图像变化波动很大,将enlink 264.c文件中的rateControlPreset设置为IVIDEO-LOW-DELAY后码率波动改善,但是没有IDR帧,除了第一帧,已经将IDRFrameInterval设置为1了,请问如何解决?