4 ms·
That's a really nice introduction. One newbie question: how is this influenced by DRM on the browser? Is it all the same plus some security on top or do videos
by mtrovo 5y ago
That's a really nice introduction. One newbie question: how is this influenced by DRM on the browser? Is it all the same plus some security on top or do videos with DRM use a proprietary codecs and packaging?
- manorwar8 5y agothere is a nice series explaining DRM here https://sander.saares.eu/post/drm-is-not-a-black-box-01/ https://sander.saares.eu/post/drm-is-not-a-black-box-01/ I think the DRM part is made during the packaging phase the https://howvideo.works/#packaging https://howvideo.works/#packaging (where they need to signalize the media has drm and also encrypt the media)
- GeneticGenesis 5y agoDRM'd video content uses the same video codecs and containers, but introduces segment encryption during the packaging phase. In most cases, this encryption is within the audio and video samples rather than on the entire segment. Most content is encrypted using MPEG Common Encryption (CENC) - though there are a couple of variants. Decryption keys are then exchanged using one of the common proprietary DRM protocols, usually Widevine (Google), Playready (Microsoft), or Fairplay (Apple). The CDM (Content Decryption Module) in the browser is then passed the decryption key, so the browser. Can decrypt the content for playback.