HLS manifest parser plugin

[joeyparrish]

Initially only for browsers which support MPEG2-TS natively (Safari, Chromecast)

[avelad]

Note: Microsoft Edge also supports MPEG2-TS natively

There will be support for Playready (Edge and Chromecast) and Fairplay (Safari)?

[joeyparrish]

There is already support for Playready on Edge & IE. Playready has not been tested on Chromecast, though.

All DRM is through EME APIs, so any interoperable DRM system in any EME-compliant browser should work. The status of Fairplay through EME is unknown at this time.

[avelad]

So, HLS+Playready will work on Edge(IE has not support for MPEG2-TS without transmuxing)?

[joeyparrish]

We expect so, yes. But we have not begun work yet, so we do not know what interoperability challenges we may find.

[avelad]

HLS supports Fragmented MP4 – and gets MPEG-DASH compatible! https://bitmovin.com/hls-news-wwdc-2016/

[joeyparrish]

Given that new development, I would expect HLS with MP4 to work on almost every browser we support. Again, we haven't started work on HLS yet.

[sanbornhilland]

I thought it could be useful to catalogue some of the issues with building HLS support into Shaka, as I come across them.

1. As reported in Support Request: sourceBuffer_ detects incorrect timestamps on content. #439 a lot of HLS VOD content seems not to start at 0 but it so far seems impossible to know what the start time is of the content until the first segment is downloaded.
2. HLS can include just an audio stream as it's lowest quality stream (see below), the intention being that if your bandwidth drops low enough then the player should switch down to this audio only variant. But it is not an audio stream in the sense that you can choose this audio stream vs some other stream (english vs spanish etc.). It seems to me like this doesn't fit nicely into Shaka's streaming model.

#EXT-X-STREAM-INF:BANDWIDTH=263851,CODECS="mp4a.40.2, avc1.4d400d",RESOLUTION=416x234,AUDIO="bipbop_audio",SUBTITLES="subs"
gear1/prog_index.m3u8
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=28451,CODECS="avc1.4d400d",URI="gear1/iframe_index.m3u8"

#EXT-X-STREAM-INF:BANDWIDTH=577610,CODECS="mp4a.40.2, avc1.4d401e",RESOLUTION=640x360,AUDIO="bipbop_audio",SUBTITLES="subs"
gear2/prog_index.m3u8
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=181534,CODECS="avc1.4d401e",URI="gear2/iframe_index.m3u8"

#EXT-X-STREAM-INF:BANDWIDTH=915905,CODECS="mp4a.40.2, avc1.4d401f",RESOLUTION=960x540,AUDIO="bipbop_audio",SUBTITLES="subs"
gear3/prog_index.m3u8
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=297056,CODECS="avc1.4d401f",URI="gear3/iframe_index.m3u8"

#EXT-X-STREAM-INF:BANDWIDTH=1030138,CODECS="mp4a.40.2, avc1.4d401f",RESOLUTION=1280x720,AUDIO="bipbop_audio",SUBTITLES="subs"
gear4/prog_index.m3u8
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=339492,CODECS="avc1.4d401f",URI="gear4/iframe_index.m3u8"

#EXT-X-STREAM-INF:BANDWIDTH=1924009,CODECS="mp4a.40.2, avc1.4d401f",RESOLUTION=1920x1080,AUDIO="bipbop_audio",SUBTITLES="subs"
gear5/prog_index.m3u8
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=669554,CODECS="avc1.4d401f",URI="gear5/iframe_index.m3u8"

#EXT-X-STREAM-INF:BANDWIDTH=41457,CODECS="mp4a.40.2",AUDIO="bipbop_audio",SUBTITLES="subs"
gear0/prog_index.m3u8