[mythtv] fixes to mythburn.py

[John Pilkington]

On 07/10/11 00:18, Stefan Brackertz wrote:
> Yes for sure it does not work if you pass "ionice -c3 java -jar projectx"
> through the backend-setup. But I run into trouble as some of my tools are
> not in the PATH and I put them into mythtv-setup with full path which in
> turn contains spaces. Maybe the command itself and its path shouldn't get
> quoted by mythburn.py but by the user in mythtv-setup?
> Nevertheless if your java is configured correctly running "projectx"
> should work. Maybe we should alter mytharchive in a way that it runs
> mythburn.py as a whole with ionice? Do you think that makes sense?

Not if you want to actually burn the DVD from it.  Anyway, I've now 
fixed the calls for the tools that I use.  See the ticket for a combined 
patch.

  I can't
> imagine a situation in which ionice could be annoying. Of course
> mytharchive should test if ionice is installed first.
> I also planned to improve mythburn's use of multicores as meither projectx
> nor the reencoding of audio to ac3 uses more than one core on my PC.
>
> But at the moment I'm trying to fix some segfaults in mytharchivehelper.
> In 0.25 there occur quite many of them. I think they also happen in 0.24
> but are not caught and therefore stay unrecognized in most cases.
>
> Stefan
>