[mythtv-users] Comcast MPEG4 requirements?

[John P Poet]

On Thu, May 12, 2016 at 4:12 PM Per Hatlevik <jakeisawake at gmail.com> wrote:

>
>>> Just another data point for reference. I'm in South Minneapolis and even
>>> though the transition hasn't quite started here yet I found that OWN on
>>> channel 399 is already mpeg4. I was able to watch live and also to record
>>> (using a ceton eth6 with cable card) just fine. Using playback data in the
>>> frontend i verified that it is indeed being decoded using mpeg4 vdpau and
>>> all frontends in the house worked perfectly so I guess I'm all set!
>>>
>>
>> Do closed-captions work?
>>
>> John
>>
>>
> i tested closed-captions this morning and unfortunately they do not seem
> to work. the frontend displays an icon meaning the recording has closed
> captions (no idea how that's determined!) but no subtitles options in the
> menu during playback and hitting t (toggle subtitles) has no discernible
> effect.
>
> this is not a deal breaker for me as i RARELY use subtitles but for some i
> concede that it may be! i am happy to do any other testing in this regard.
> subtitles DO work on my other mpeg2 recordings.
>
> i'm also on mythtv v0.27.4 so things may have changed in newer versions or
> 0.28. i'm planning to upgrade to 0.28 when i have two weeks off at the
> start of june.
>

v0.27.4 uses an older version of the ffmpeg libraries which do not support
captions embedded in H.264.  In theory, the ffmpeg in v0.28 has support for
it, but I don't believe it has been verified.

John
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