Support hvc1 box & enable simple access of hevc parameter sets #128
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I have an HEVC mp4 file of the
hvc1
kind. In order to construct the decoder (using Apple VideoToolbox) I need the PPS, SPS, VPS parameter sets.This PR does two things:
hvc1
box. This appears similar tohev1
at least at the 'trak' level. In my files, there are additional inner boxes, for example acolr
box. I therefore skip nested boxes.I should note here - I have no particular video decoding knowledge, but do have some experience with binary formats and software engineering in general - have reverse engineered what I need in order to solve my present problem by looking at output from the
MP4Box
tool.