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我已经配置并编译了 ffmpeg 源以在树莓派 4B 上启用硬件加速编码 (h264_omx)。
谁能告诉我如何从脚本中获取确切的编码时间？谁能指出ffmpeg代码中的哪个函数或API调用负责硬件加速编码？