[mythtv-users] HLS, transcoding with HD content etc

Frank Phillips frankalso at gmail.com
Sun Sep 20 20:46:44 UTC 2015


On Sun, Sep 20, 2015 at 9:05 AM, Dan Poltawski <talktodan at gmail.com> wrote:

> Hi All,
>
> I'm just starting to experiment with the built in with HLS support and
> other things for playing UK DVB HD content on iOS devices. Unfortunately my
> backend is nearly 10 years old and doesn't have much horsepower for
> transcoding.
>
> I'm wondering if anyone has any insights:
>
> 1) Is anyone pre-transcoding with HLS? Do you have a script for doing it
> with services API or do you take another approach?
>
> 2) Can modern hardware do the HLS transcode in reasonable time? The
> various android apps seem to suggest that way, so I'm considering upgrading
> my hardware for this (I realise this is a 'how long is a piece of string'
> question but wondering what others experiences are)
>
> 3) Are people using any other approaches for playing content on iOS? I am
> keen to avoid transcoding on the iOS side to get a better scrubbing
> experience... I am pretty clueless but I think that some of the UK channels
> might just need putting in another container format as they have mpeg4
> streams so that could avoid a transcode for those..
>
> 4) Are there quality limitations with the current HLS support? (Is it
> capable of 5.1 sound?)
>
> Any help/insights appreciated :)
>
> cheers,
> Dan
>
>
Be aware, you'll have to use 0.27.3 or 0.28 to get successful HLS. It wants
to convert multichannel audio to stereo and this is broken in 0.27.4 (
https://code.mythtv.org/trac/ticket/12430).
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