I found two HEVC specific issues in the MP4 muxer.
1) File libavformat\hevc.c, hvcc_parse_pps()
pps_slice_chroma_qp_offsets_present_flag is missing
-------------
/*
* weighted_pred_flag u(1)
* weighted_bipred_flag u(1)
* transquant_bypass_enabled_flag u(1)
*/
skip_bits(gb, 3);
-------------
Should be
-------------
/*
* pps_slice_chroma_qp_offsets_present_flag u(1)
* weighted_pred_flag u(1)
* weighted_bipred_flag u(1)
* transquant_bypass_enabled_flag u(1)
*/
skip_bits(gb, 4);
-------------
2) File libavformat\hevc.c, hvcc_parse_sps()
-------------
for (i = 0; i < get_ue_golomb_long(gb); i++) { // num_long_term_ref_pics_sps
-------------
Is not correct. get_ue_golomb_long(gb) is evaluated multiple times.
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