ISO/IEC 14496-10 is actually one of the free standards: https://standards.iso.org/ittf/PubliclyAvailableStandards/ https://standards.iso.org/ittf/PubliclyAvail

ISO/IEC 14496-10 is actually one of the free standards: https://standards.iso.org/ittf/PubliclyAvailableStandards/ https://standards.iso.org/ittf/PubliclyAvailableStandards/ Presumably this is because H.264 is public. Your complaint is well founded, though: if you've built an AVC codec using public documents you may be frustrated to learn that ISO/IEC 14496-14 (describing the MP4 file format) and ISO/IEC 14496-15 (describing the AVC elementary stream and how to encode it as an MP4) are not public. It's also worth noting that ISO removes public standards. You may find references to public standards, like the link at https://ffmpeg.org/doxygen/2.7/webmdashenc_8c_source.html https://ffmpeg.org/doxygen/2.7/webmdashenc_8c_source.html – but neither the linked ISO/IEC 23009-1:2014 nor any other version of the MPEG-DASH standard is available to the public at this time. Pay up!