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Re: [Hls-interest] coming to Apple HLS clients later this year: M-JPEG support

Alex Giladi <alex.giladi@gmail.com> Wed, 23 February 2022 18:02 UTC

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From: Alex Giladi <alex.giladi@gmail.com>
Date: Wed, 23 Feb 2022 11:01:56 -0700
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To: HLS HTTP Live Streaming Review <http-live-streaming-review@group.apple.com>
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Subject: Re: [Hls-interest] coming to Apple HLS clients later this year: M-JPEG support
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Hi Roger,
What do we do for HDR? Any plans for HEIF?
Best,
Alex.

On Wed, Feb 23, 2022 at 10:04 AM Roger Pantos <rpantos=
40apple.com@dmarc.ietf.org> wrote:

> Hi folks. This is just a quick heads-up to let you know that in an OS
> release later this year, the Apple HLS clients will be updated to support
> Motion-JPEG fMP4 segments (i.e. JPEG images inside fMP4 containers). This
> will allow you to provide I-frame playlists (for both VOD and live content)
> that contain JPEG I-frames, rather than AVC or HEVC as previously supported.
>
> We're doing this to support interoperability with lower-end devices from
> other manufacturers that cannot spawn a second video decoder instance, but
> can decode JPEG in software.
>
> M-JPEG is specified in ISO/IEC 23008-12 "High efficiency coding and media
> delivery in heterogeneous environments —Part 12: Image File Format."  The
> 4cc codec type is 'mjpg' with no parameters (http://mp4ra.org/#/codecs),
> So an example EXT-X-I-FRAME-STREAM-INF would be:
>
>
> #EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=331000,CODECS="mjpg",URI="iframe_index.m3u8"
>
> We also plan to update our mediafilesegmenter tool to enable it to produce
> M-JPEG fMP4 segments from JPEG source.
>
>
> regards,
>
> Roger Pantos
> Apple Inc.
> --
> Hls-interest mailing list
> Hls-interest@ietf.org
> https://www.ietf.org/mailman/listinfo/hls-interest
>

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