How to number and label ConformanceChunkFrames.
Optional
The first chunk's number in the stream, from 0: it sets its time, its bytes and whether it is a key frame. Default 0.
The chunks' type. Default video/h264; codecs="avc1.42e01f".
video/h264; codecs="avc1.42e01f"
How to number and label ConformanceChunkFrames.