Earlier quoted context omitted.
Getting access to standards is easier than it seems. ETSI (DVB), ATSC and SCTE standards are fully free and open. ARIB (ISDB) standards are free, except the latest version and previous versions are usually enough. ISO/IEC (MPEG) standards are behind expensive paywalls but most MPEG standards have ITU equivalent (strictly identical, except the title page) and all ITU standards are free and open. For the few remaining…
Unfortunately some of the SMPTE standards do cost money if one is not a member.
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