- Files with
.h265extension from Ctronics cameras are not standard H.265 bitstreams - They use a proprietary HXVT/HXVF/HXVS container format (magic bytes:
HXVT,HXVFat file header) - This is why
ffprobe,mediainfo, andcatconcat all failed to detect audio - The
NALU type 40errors in ffmpeg are caused by this proprietary wrapper
- FFmpeg bug #9245 tracked missing HXVS/HXVF/HXVT support — fixed in git master (commit
e1d946f)