[mythtv-users] Any Blu-Ray success stories?

[Mark Anderson]

Well, I did get an off-list response which follows this dual-mode
flow. I expect to leave my machine on MythTV 24/7, but apparently
that's not terribly compatible with Blu-Ray at the current time.

Here's what I was sent:

----------------------
Hi Mark,
I have the LG combo drive and here's how I got it all working with Myth.

I keep a small Windows partition for testing hardware, etc.
So I boot into Windows and use AnyDVD-HD to rip/decode to hard drive.

Back in Linux, copy the ripped BR or HDDVD folder to a hidden folder
(mine is .HDmovies) in your videos directory. Hiding the folder keeps
all those files from showing up in the video manager.

I've been using svn mplayer with the ffmpeg SoC E-AC3 patch, but I think
you don't need the patch anymore as it's supposedly in ffmpeg svn. See
this thread: http://forum.doom9.org/showthread.php?t=129050&page=16

In settings, set up myth file association "hd" to play with "bash %s"
(uncheck "Use default player" if checked).

Create .hd file in videos directory. Here's an
example called Juno.hd:
-------------
mplayer-br -ac ffac3 -aid 4352
$VIDEODIR/.HDMovies/JUNO/BDMV/STREAM/00002.m2ts
-------------

"-ac ffac3" is for E-AC3 audio. Sometimes I need "-ac hwdts" instead for
DTS. And I haven't had one yet, but I think it would be "-ac mlp" for
TrueHD.

Of course you need to figure out which m2ts or evo file to play-- it's
usually the largest one. Sometimes the main feature is split into
several and I put them sequentially as args to mplayer (some movies with
"seamless branching" are insane like Ratatouille with ~25 files-- search
Slysoft forums for sequences).

Also, you need to find the right audio track and use the correct aid for
each file. You can initially use "mplayer -v" to determine the aid
choices (or you can use the hotkey "#" in mplayer to switch audio tracks).

I've created scripts mplayer-br:
-------------
#!/bin/bash
/usr/local/bin/mplayer -channels 6 -af lavcac3enc=1 -lavdopts
fast:skiploopfilter=all -sws 0 -framedrop -autosync 30 -nocorrect-pts
-quiet -fps 24000/1001 -fs -ao alsa:device=iec958 $@
-------------

and mplayer-hd:
-------------
#!/bin/bash
/usr/local/bin/mplayer -channels 6 -af lavcac3enc=1 -nocorrect-pts
-quiet -fps 24000/1001 -demuxer lavf -lavfdopts format=mpeg -lavdopts
threads=2:fast:skiploopfilter=all -sws 0 -framedrop -autosync 30 -vc
ffvc1 -fs -ao alsa:device=iec958 $@
-------------

I'm no mplayer expert, but a lot of these options were gleaned from the
web to improve performance. Not even sure in some cases how much they
help or if I'm using them right, so you should tinker. "-autosync 30"
and "-nocorrect-pts" seem to be important on my system. Syncing the
audio is the only cause of choppiness on my system (-nosound==no
choppiness). It's not bad, but I expect this to improve as svn ffmpeg
improves. You could nice these too, but I haven't needed to.

"-channels 6 -af lavcac3enc=1" re-encodes the audio to ac3 in case you
only have spdif like me.


On Fri, Sep 12, 2008 at 12:14 PM, Florin Andrei <florin at andrei.myip.org> wrote:
> Mark Anderson wrote:
>> Well, I guess it's about as encouraging as I thought from my Google crawling.
>>
>> I'm still on the fence about returning this LG BD drive.
>
> If you keep googling, you'll notice there's still a lot that can be done
> on Windows, so if that's a dual-boot machine the BD drive might be a
> keeper. ;-)
> It's just problematic to use it directly on a dedicated MythTV system.
>
> --
> Florin Andrei
>
> http://florin.myip.org/
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