[mythtv-users] 0.21 ignoring mpeg4 channels

[Richard Morton]

2010/1/22 Thomas <mythtv at egge.se>:
> Hi. My network have recently started to broadcast a few channels in mpeg4.
> Today I did a new channel scan (with the 'scan' command line tool) and
> created a new channels.conf. The new channels are in there just fine.
> However, when I try to set mythtv up with the new channels.conf, it says it
> ignores the mpeg4 channels as they are "data only (off-air?)" or something
> along those lines. Why is that?
>
> From what I understand, my DVB-T cards should be able to just dump the mpeg4
> datastream to disk so my feeling is that this is mythtv related. Am I right?
> And if so, what do I need to do? Is there anything I *can* do?

As I understand it, and I am no expert. the dvb-t standard is to use
mpeg2. If however they are transmitting MPEG4 over dvb-t then yes the
dvb-t tuner card should just dump it to disk. I think the BBC in the
UK has some test transmissions of this.

just in case, ifyou think you have some recordings that wont play (do
they appear in watch-recordings?) locate a file and try playback in
another program such as VLC.

However in the UK, the planned rollout of h264 is going to be on a
multiplex changed to the new DVB-T2 standard. In this case your tuner
card would not work with this broadcast but I am not sure if if it
would see the channels when tuning, and if you did whether you'd these
strange messages.

(I get confused when people refer to simply MPEG4 and MP4 files, due
to the following confusion; h.264 is also known as MPEG4, MPEG4 part
10 and Advanced Video Coding, AVC, which is different from DIVX/XVID
which is also referred to as MPEG4 but is actually MPEG4 part 2 or
advanced simple profile. It's on wikipedia page -
http://en.wikipedia.org/wiki/MPEG-4)

R