[mythtv-users] mpeg2 to mpeg4 transcoding in mythtv

[zoiks2004-ivtv at yahoo.com]

If you are using the tv-out of the 350, you need to
use the latest ivtv versions (0.3.7+) to play mpeg4
files.    It works for Myth, xine, and mplayer (I
haven't tried it with mplayer).  The hardware decoder
on the 350 only plays mpeg2 video with mp2 audio.  The
framebuffer in 0.2.0-xxx versions isn't fast enough
for X11 playback, but there are xv extensions built
into the latest versions of ivtv that allow playback
of any type of video.  If you are in PAL territory it
may work near perfectly, but my NTSC video has a
slight bit of jerkiness in the video.

Note that these ivtv versions aren't quite stable yet.
 I've been using them for a while now and they work OK
though not perfectly.  But it allows me to transcode
to mpeg4 and still play the videos.

Search the ivtv-devel mailing lists for more info:
http://gossamer-thread.com/lists/ivtv/devel/


--- gary <gary at securepeace.org> wrote:

> Hi,
> I've set mythtv 0.18 to transcode the mpeg2 output
> from my hauppage
> pvr350 into mpeg4 format.  Mythtv, mplayer, and xine
> all play the mpeg2
> files back fine.  Mythtv can play back the mpeg4's
> just fine, xine and
> mplayer/gmplayer do not seem to be able to read the
> mpeg4 files.  I've
> tried most of the reasonable looking video codec
> families in mplayer.
> 
> I'd appreciate it if someone could point me to
> mailing list archive post
> or give some advice.
> 
> output from the xterm running gmplayer:
> MPlayer 1.0pre7-3.3.5 (C) 2000-2005 MPlayer Team
> CPU: Advanced Micro Devices Athlon MP/XP
> Thoroughbred (Family: 6,
> Stepping: 1)
> Detected cache-line size is 64 bytes
> CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1
> SSE2: 0
> Compiled for x86 CPU with extensions: MMX MMX2 3DNow
> 3DNowEx SSE
> 
> 
> 
> 
> vo: X11 running at 1600x1200 with depth 24 and 32
> bpp (":0.0" => local
> display)
> Failed to open /dev/rtc: No such file or directory
> (it should be
> readable by the user.)
> Opening joystick device /dev/input/js0
> Can't open joystick device /dev/input/js0 : No such
> file or directory
> Can't init input joystick
> Setting up LIRC support...
> mplayer: could not connect to socket
> mplayer: No such file or directory
> Failed to open LIRC support.
> You will not be able to use your remote control.
> Playing
>
/var/lib/mythtv/1069_20050724145900_20050724150000.nuv.
> TiVo file format detected.
> MPEG: No audio stream found -> no sound.
> MPEG: FATAL: EOF while searching for sequence
> header.
> Video: Cannot read properties.
> No stream found.
> 
> 
> Exiting... (Exit)
> 
> 
> 
> Thanks, Gary
> 
> 
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