[mythtvnz] DVB-T working in NZ

Stephen Worthington stephen_agent at jsw.gen.nz
Sat May 17 03:37:25 BST 2008


On Sat, 17 May 2008 12:49:41 +1200, you wrote:

>On Saturday 17 May 2008 11:55:38 Douglas Pearless wrote:
>> How is this progressing?
>> I cannot wait to see it part of mythtv proper...
>> Cheers Douglas.
>>
>> Steven Ellis wrote:
>> > On Tue, May 6, 2008 5:25 pm, Paul Kendall wrote:
>> >>> Any chance you can produce a diff against standard source?
>> >>
>> >> Sure thing. It'll be a massive patch though, as I upgraded ffmpeg.
>> >> Perhaps a better strategy would be a patch to certain revision of ffmpeg
>> >> and a
>> >> patch to mythtv. This is basically how I built it here.
>> >
>> > Yes that would be the best way to proceed. I was going to take a look at
>> > your code to try and do the same myself, but you will probably know your
>> > own changes a lot better.
>> >
>> >>> Also it would be very useful if you were happy to submit this to the
>> >>> ffmpeg team under the LGPL so that ffmpeg can handle the audio
>> >>> streams..
>> >>
>> >> I want to tidy it up a bit as it's C++ currently and the rest of ffmpeg
>> >> is C.
>> >> I don't think they would accept that. Also, it would be better to use
>> >> the ffmpeg bit manipulation functions rather than the C++ doing the same
>> >> basic thing. Perhaps I could then share some of that code to do a proper
>> >> AAC-LATM
>> >> parser for ffmpeg as well.
>> >
>> > Yeah they don't accept C++ patches I'm afraid. If you can split the
>> > FFMPEG patch out I might be able to help out on the re-factoring to C.
>> >
>> > Steve
>> >
>> > --------------------------------------------
>> > Steven Ellis - Technical Director
>> > OpenMedia Limited - The Home of myPVR
>> > email   - steven at openmedia.co.nz
>> > website - http://www.openmedia.co.nz
>> >
>> > _______________________________________________
>> > mythtvnz mailing list
>> > mythtvnz at lists.linuxnut.co.nz
>> > http://lists.ourshack.com/mailman/listinfo/mythtvnz
>> > Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
>
>Slowly, but surely.
>I am waiting to talk to janneg from MythTV as he is the maintainer of the 
>patches to ffmpeg in myth. Once I have talked to him I will have a better 
>idea of how I should proceed.
>
>You can always download the patches from my site and build it yourself.
>http://pkendall.homeip.net
>
>Bear in mind that there are problems with the interlaced channels i.e. lots of 
>motion artifacts. The 720p channels look real nice. Also, there is a lag 
>between the video and audio of 0.5 seconds. I need to figure out how to fix 
>this as well.
>
>Cheers,
>Paul

There is an option in the Myth OSD to adjust the audio sync manually,
until the lag can be fixed.



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