Not just right codec but following variables
* As you say closed caption generation luckily good cross standard platforms here
* Roughly you need at least 5 video 'profiles' to allow for bandwidth constraints on device
* 2 codecs at least .h264 but also .h265 and maybe vp9
* Packaging - this the container around the encoded fragments . 2 common standards are HLS and DASH
* Then drm . 3 common formats playready, fairplay and widevine. The cenc model is widely used but still means 2.
1 input and MANY outputs sadly .
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Not just right codec but following variables
* As you say closed caption generation luckily good cross standard platforms here
* Roughly you need at least 5 video 'profiles' to allow for bandwidth constraints on device
* 2 codecs at least .h264 but also .h265 and maybe vp9
* Packaging - this the container around the encoded fragments . 2 common standards are HLS and DASH
* Then drm . 3 common formats playready, fairplay and widevine. The cenc model is widely used but still means 2.
1 input and MANY outputs sadly .