fix(toDash): Add missing transfer characteristics for h264 streams #573
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YouTube doesn't provide any color information for the h264 streams in their API responses. Players like shaka-player treat streams with missing color information differently, so you end up with duplicate qualities in the quality selector. As the h264 files that YouTube offers always seem to be SDR, it's a pretty safe bet to hard code that into the DASH manifest generator.
Alternatively we could copy the color information from the
vp9(not thevp9.2) streams, but we would have to do that before we apply the users format filter, it would also mean that it would only work ifvp9formats exist and are passed in.