MythTV NZ

This is an attempt at a quick guide on how to test and debug Linux support for New Zealand’s freeview DTT Network under Linux.

Debugging Steps

Step 1

Grab a copy of mplayer from SVN as you will need all of the latest patches.

svn co svn://svn.mplayerhq.hu/mplayer/trunk
mv trunk mplayer_svn
cd mplayer_svn
./configure –disable-mencoder
make

Step 2

You will need a ~/.mplayer/channels.conf file, see attached as an example

• Sample file for Auckland Waiatarua
• Sample file for Kapiti Ngarara

For details on transmitters and channel allocation see this reference.

Step 3

Grab some samples from the major channels, eg

mplayer -dumpstream -dumpfile tv6.ts dvb://”TVNZ 6″

Step 4

Try and playback the samples using your SVN build of mplayer.

Step 5

Report back on your system config what does/doesn’t work and your setup, eg

• OS version
• Processor
• RAM
• Graphics Card
• Additional patches
• Any special options required
• CPU Load and compatibility status for
  • 576i
  • 720p
  • 1080i
  • Radio

MPlayer Playback Tips

Here are some tips on how to improve the performance of MPlayer

Multicore support

Deinterlace video

Fix audio sync on interlaced channels

-mc 2

Known Issues

These are known issues as of mplayer r26305 and ffmpeg r12665.

1. HE-AAC LATM audio can report odd errors or occasionally not work
2. HE-AAC Audio sync issues on interlaced video
3. Odd video artifacts on interlaced streams
4. Performance issues

Reported Configurations