I'm using gohlslib for converting RTMP to HLS, this library gives me HLS and LHS with the transmuxing feature where each segment is of 2s.
But I also want to support the ABR, the flow with this is NALUs are packed in either AVCC or AnexB format and stored in fmp4 parts. []parts make one segment.
I was thinking if I could be able to transcode this anexB or AVCC stream format after its packed into fmp4. I tried to check what's packed in parts and stored the output as .h264 file.
The first part of a segment has NALUs in this order SPS PPS SPS PPS slice of IDR slice of non-IDR...
but the later parts that are created don't have it.
Only the 1st part of every segment has SPS PPS SPS PPS slice of IDR.
I may be wrong to say that this is what raw .h264 content.
My question is, is it even possible to transcode such part files using Go or CXX while maintaining same PTS and DTS of the transmuxed parts/segment