Month: October 2010

Use replex to fix them

It turns out that the raw stream isn’t quite compatible with the DVD standard. There is apparently a small glitch in some of the hardware encoding done by the chip on my PVR-150 encoder. As such, another round of processing needs to be done to detect these glitches and patch them. A command-line tool has been written which does just that: replex.

Here’s the syntax:

$replex -t DVD -k -o Out.mpg In.mpg

The above command would take an input file In.mpg, generated by nuvexport, and create a new, fully DVD compatible file Out.mpg. A slightly fancier command can be done to process all the .mpg files in a particular directory:

$find . -name '*.mpg' -print0 | xargs -0 -i replex -t DVD -k -o '{}'.replexed '{}'

This will take all input files as ending with the .mpg file extension, process them, and generate outputs that have the same base name but with ‘replexed’ appended as the new file extension.

Clear Key Bindings

Once and a while I really screw up my key bindings on my system. When this happends it’s nice to flush the key bindings from the database. From the command line type:

echo "delete from keybindings ;" | mysql -u mythtv -pmythtv mythconverg

Backup Key Bindings

It never hurts to backup your keybindings once and a while before your about to change them. From the command line type:

mysqldump -u mythtv -pmythtv --databases mythconverg --table keybindings > keybindings.sq

Restore from Backup of key bindings

Backups are not very good unless you can restore from the backup. Use the following command to restore a backup.

mysql -u mythtv -pmythtv mythconverg < keybindings.sql