mythtv at jonread
Feb 16, 2004, 10:43 AM
Post #1 of 2
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DVB-T MPEG2 -> MPEG4 transcoding questions
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Hi all,
I got my Myth box up and running last week, and am pretty pleased with
it's capabilities so far. Especially when it decides to record a
different airing of an episode because one conflicts with another programme!
I'm currently using a single Hauppauge WinTV Nova-T (budget) DVB card,
with a view to adding a Nebula DigiTV later. Recording works just
great, but I'm having problems when it comes to automatically (or
manually) transcoding them.
In Recording Profiles, I have:
Hardware DVB Encoders/Default set up to "Automatically transcode after
recording". The rest of the settings are 720x576, MPEG4, bitrate 2200,
scale bitrate, high-quality encoding, and 4MV encoding enabled.
Audio is MP3, 32000, quality 4.
I also have:
Transcoders/MPEG2 set up with the same settings as above.
Now, what will MythTV do? Will it transcode after recording using the
"Hardware DVB Encoders/Default" settings, or the "Transcoders/MPEG2"
settings?
In fact, it does neither. :-)
It currently appears that mythcommflag is running at the same time as
mythtranscode, with the result that mythtranscode fails with a "cutlist
updated" error. I've tried stopping automatic commercial detection
(which doesn't seem to work too well on UK Freeview channels :-(), with
more success.
However, trying to transcode .nuv files by running mythtranscode
manually doesn't seem to work - I'm unsure of the command line arguments.
If I use "mythtranscode -i <file.nuv>", I get:
Stream: 0 Type: 0
Stream: 1 Type: 1
Input #0, mpeg, from '1030_20040216145900_20040216170000.nuv':
Stream #0.0: Video: mpeg2video, 720x576, 25.00 fps
Stream #0.1: Audio: mp2, 48000 Hz, stereo, 192 kb/s
Only MP2 audio is currently supported
mythtranscode: mpeg2trans.cpp:377: uint32_t
MPEG2trans::process_mp2_audio(AVPacket*): Assertion `0' failed.
Aborted
This happens whichever file I try to run it on.
Any tips are gratefully received!
Thanks,
Jon
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