Importance of metadata in RTMP streaming

I came across an article saying RTMP Pushing the stream , If you don’t send flv metadata, It can also be displayed normally , Because… Is used for the display at the receiving end H264 in SPS、PPS In the parameters of the .

So I did an experiment and didn’t send metadata, Send only SPS/PPS package 、 Video frame (I Frame and normal frame ), use VLC Pull flow can indeed be displayed normally .

What’s the actual situation RTMP In the use , This metadata Is it important? ? Or it depends on whether the pull end is used metadata To decide

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