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baxtermedic · 2008-09-25, 18:41

I have recently found this program and was wondering what would be the best way to use this on the Blu rays that I own to back them up to my library and loose little to no quality on the video and audio.

I mean if I rip the main .m2ts folder demux it and remux into .mkv what would be the best audio form to use and not loose quality.

I can loose the 7.1 and use 5.1 since that is all i have but i don't want to loose the quality.

I have the nvidia 8200 board so it can do all the way up to 8ch pcm.

Thanks everyone.

griffore · 2008-09-25, 18:50

http://forum.doom9.org/showthread.php?t=125966

Read the above thread for all the details you requires...

Since you don't say how you want to "back it up to your library", I am assuming you are just storing the discs onto hard drive. Basically, demux whatever you want, then remux it all into an MKV file.

What I do is demux the video (as MKV), audio (as 448 kbps AC3), subtitles (as SUP) and chapters. I then reencode the video so that I can mux it all into an MKV which will fit onto a DVD9 disc. This usually results in video with a bitrate ~ 9,500 kbp/s.

baxtermedic · 2008-09-25, 20:23

I would like to put it in an mkv container with the video untouched and not have to downgrade the quality of the audio if at all possible.

althekiller · 2008-09-25, 20:37

If you don't want to touch the audio or video streams, why switch containers at all? AFAIK we play .m2ts.

baxtermedic · 2008-09-25, 20:47

XBMC windows doesn't decode the truehd or dts-hd to 8ch pcm or passthrough to reciever over hdmi does it? even with the new asus hdav3.1.

If the XBMC windows will work seamlessly with the HDAV1.3 then Yeah I'll leave it in m2ts. But I want to use all aspects of XBMC

althekiller · 2008-09-25, 21:03

Ah, yeh you'll need to reencode the audio to AC3.

baxtermedic · 2008-09-25, 21:05

What about multichannel FLAC. Is there no way to save any of the lossless sound?

lymwuwu · 2008-09-25, 21:56

baxtermedic Wrote:XBMC windows doesn't decode the truehd or dts-hd to 8ch pcm or passthrough to reciever over hdmi does it? even with the new asus hdav3.1.

I will wait for this feature instead of waste time on remux.

lymwuwu · 2008-09-25, 22:02

althekiller Wrote:If you don't want to touch the audio or video streams, why switch containers at all? AFAIK we play .m2ts.

I agree and keep everything in m2ts.

There might be a risk that bitstream of advance audio formats might not work for other containers.

griffore · 2008-09-25, 22:11

You don't have to downgrade the audio. You can mux the audio to the follwoing formats:

RAW, (L)PCM
WAV (PCM only)
WAVs (multiple mono WAV files, PCM only)
AC3
DTS
AAC
FLAC

The problem with keeping the m2ts files is what do you do with discs that span multiple m2ts files or those which employ branching? You end up having an entire folder for the disc.

When you backup to an mkv container, everything is neatly contained in one file.

griffore · 2008-09-25, 22:13

Maybe I'm totally mistaken, but won't XBMC just put out a bitstream for the audio and it's up to your receiver to decode it?

lymwuwu · 2008-09-25, 22:46

griffore Wrote:The problem with keeping the m2ts files is what do you do with discs that span multiple m2ts files or those which employ branching? You end up having an entire folder for the disc.

When you backup to an mkv container, everything is neatly contained in one file.

ToNMT could easily merge the multiple m2ts using playlist including those seamless branching titles into one m2ts file and keep the Dolby TrueHD/DTS-Master.

A lot easier than using eac3to.

lymwuwu · 2008-09-25, 22:49

griffore Wrote:Maybe I'm totally mistaken, but won't XBMC just put out a bitstream for the audio and it's up to your receiver to decode it?

For AC3/DTS yes, but not for the "new generation codecs" such as DTS-HD/Master DD+ and DTHD.

Actually almost nobody could bitstream those new ones on PC regardless of the decoder/player/software/OS until maybe recently with HDMI 1.3 sound card.

But I heard it is still buggy as hell.

Freddo · 2008-09-25, 22:50

I use eac3to to rip bd discs to mkv, and store the audio as 6ch FLAC aswell as a fallback AC3 track transcoded from the original lossless. XBMC plays them just fine, FLAC soundtracks included.

baxtermedic · 2008-09-25, 22:56

OK, yeah i was planning on doing mkv. I just wanted to make sure I could convert the audio to 8ch pcm so i don't have to worry about xbmc not being able to handle truehd or dts-hd.

So i guess that an MKV container holding untouched video and 8ch raw pcm would work with xbmc?

I'm just trying to see the best audio type (not concerned with space) with untouched video in an MKV container that will play in xbmc and output through my MB hdmi (which is capable of 8channel pcm)