support microsoft smooth streaming demux

[luckysk]

As the most shining star in multimedia, ffmpeg seems to lack support for MSS demux,some playready sources basically use MSS. Does anyone have any relevant plans?

In this website(​http://playready.directtaps.net/smoothstreaming/), there are many MSS test sources, such as the following non encrypted sources:

​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_230.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_331.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_477.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_688.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_991.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_1427.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_2056.ismv
​http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720_2962.ismv

Both VLC and GStreamer can play them well, but ffplay can't. I think both VLC and GStreamer have extended their own demuxer for MSS, while ffmpeg lacks an available demuxer.

[Balling]

There should already be support in those apps pirates use that remux stuff from Netflix and Disney+ in Dolby Vision profile 5.

[luckysk]

Replying to Balling:

There should already be support in those apps that remux stuff from Netflix and Disney+ in Dolby Vision profile 5.

However, if there is an MSS demuxer, many players based on ffmpeg(such as mpv,ijkplayer..etc) can directly play MSS without transcoding, which will benefit many applications. My understanding is that transcoding is also a compromise method that has to be taken due to the lack of MSS demuxer. It introduces some additional performance losses and increases the deployment cost.

[Carl Eugen Hoyos]

Works here but since the original report did not provide the minimal necessary information I may miss something.

[Balling]

You are missing that you need a HW private key for L1 streaming, and not in Galaxy, one in Xiaomi or LG. That is not playready though.

[Balling]

Yeah, no one uses playready. Everyone uses keys like (L1) that, but they revoked fast and google pays 250k for reports of leaks: ​https://github.com/Mavrick007/LenovoTB-X505X-L1-KEY