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When I stream to an flv server, like flash media server, using ffmpeg, like
ffmpeg -i input -vcodec libx264 rtmp://hostname/streamname
it turns out black. Why is that?
Turns out that in “more recent” versions of ffmpeg, the default x264 pixel format is “yuv422p” which isn’t supported by most commercial encoders.
Fix: specify -pix_fmt yuv420p or -pix_fmt yuyv422 for the x264 format.