My speculation about Apple being a possible supporter of this format is based on what Jerry alluded to, the usage of CBC in HLS. HLS v5 with AES-SAMPLE encryption is much closer to CENC than traditional HLS. Having said that — this was just speculation on my part. I have not looked at what the announced Apple CDM is doing yet. I would hope they support one of the two formats EME support today. Joe Steele On Jun 18, 2014, at 3:09 AM, Henri Sivonen <hsivonen@hsivonen.fi> wrote: > On Tue, Jun 17, 2014 at 10:03 PM, Jerry Smith (WINDOWS) > <jdsmith@microsoft.com> wrote: >> I understand that CBC is used on HLS content, and there is a move to support >> this for CENC. > > But doesn't HLS use MPEG2-TS as the container instead of fragmented MP4? > > If CBC in MP4 is different from whatever HLS is using precisely, what > good does it do anyone to just adopt a block cipher mode from HLS? > > As for the Apple CDM, is there a particular reason to believe that its > non-CENCness is about the block cipher mode? > > -- > Henri Sivonen > hsivonen@hsivonen.fi > https://hsivonen.fi/
Received on Monday, 23 June 2014 16:07:27 UTC