NAL unit parsing is incorrect

[pete-farlow]

The BDInfo source code does not account for emulation prevention bytes at all, it seems you're not aware of those.
Therefore the results are pretty random.
With AVC the tool often gets lucky, because the respective nal units don't require emulation prevention all that much, but with HEVC it's totally hit and miss.

I saw a few workarounds in the code that sort of work around this bug, which can only work under certain conditions.

Anyway - after I fixed the code to include emulation prevention awareness and removed these workarounds, output was 100% reliable.

Please search the AVC and/or HEVC specs for "emulation prevention" - it's the same scheme in both cases.

[UniqProject]

Busy testing the changes.