dts 15xx kbps downsample to 7xx possible

[martijnleunissen]

Is it possible to downsampje a 15xx kbps dts soundtrack to a 7xx kbps soundtrack? Cause it would be nice to give another 700 kbps to the video stream, which would otherwise only get 1900 kbps, which is on the low side for a dvd backup.

I know that there is a post from more then a year ago asking for the same thing. But a lot of things changed in the last year, so maybe this is also possible by now.

[Wilbert]

Is it possible to downsampje a 15xx kbps dts soundtrack to a 7xx kbps soundtrack?
No, not that I know. [btw: I think that muxing of avi and dtswav is not possible yet ...]

[kempfand]

Transcoding should work with the latest BeSweetv1.5b19 and corresponding BeSweetGUIv0.6b77 (links posted @ Doom9'a main site).

I'd however suggest that you leave the 1511 dts untouched, because it gives you such a high-qual sound :) (or else really shrink it to an mp2 using the same tools mentioned above).

Andreas

[Wilbert]

No, it doesn't. It converts dts to dtswav, provided you have surcodeDTS. Is it possible to mux avi with dtswav?

[ChristianHJW]

I dont really get the purpose of keeping DTS for this use at all, but this is just IMHO. Make a 640 kbps AC3 from it, this will sound perfect and probably much better than a 700 kbps DTS ..... personally i'd use AAC from Nero, with a bitrate of > 300 kbps it should get stunning results ( not tested ) ...

[kempfand]

@ Wilbert: Maybe I'm missing something here (or it's just too warm at 36 Celsius in my office w/o aircon). But I was assuming at the 1536 dts is 48 kHz, and the latest BeSweet/GUI can transcode that to a 768 dts (not dtswav). At least the Output-field in BeSweet's GUI changes to dts ...

Kind regards,

Andreas

[Wilbert]

That would be nice! I don't have the time to check it coming days, but I will certainly look at it.

[martijnleunissen]

thanks for the reactions, I know the sound track is high quality in dts 1636, but I also want to have a decent looking video-track. The DTS soundtrack alone is like 1.4 gb. It is a live recording of a dutch band. It has dd 2.0, dd 5.1 and dts 1536 soundtracks. If I'd include all the soundtracks, video would only get 1858kbps, which really looks bad (large blocks) when a lot of smoke and light is showed.

I was just wondering what options I had for making a decent backup, without losing to much quality over the original.

I'll try besweet as soon as I'm done ripping original audio cd's to mp3 for holiday.

[Awatef]

I'll suggest you just take the original DD 5.1.
DTS is not suited for AVI backups at all.

1850k should give you excellent video quality BTW, be sure to use 2-pass encoding.

[martijnleunissen]

I used 5 pass encoding, so that shouldn't be the problem. 1900kbps is just not enough for good quality with the used content I guess...

Leaving the dts soundtrack out is indeed an option, I'll first look if downsampling the dts track will give enough space for the video track. If so, i'll keep it.

And I don't know what you mean by avi backup, but I'm doing a dvd-9 to dvd-5 backup.

[Awatef]

You doing DVD-9 to DVD-5?! I didn't knew.

Well then, lower the resolution to half: 352x576 for PAL, or 352x480 for NTSC.

And then if you just keep the DD 5.1 track (which is more than enough IMHO), you'll get a pretty good bitrate left for your video ;)

[DIggedy]

If you halve the resolution of the video as suggested above you should be able to get good results at a low bitrate and still keep the 1536kbps DTS stream... it all depends what your priority is, video or audio quality.