DVD DTS is lossy. DVD-A uses MLP which is lossless
The DVD-A Workshop forum
- Thread starter JonUrban
- Start date
Help Support QuadraphonicQuad:
If you're ripping from the VIDEO_TS folder, then often there's a choice between DTS and AC3. Both are lossy: AC3 is smaller.
If you want lossless audio, you should rip from the AUDIO_TS folder on a DVDA. Also in AudioMuxer if you are ripping to flac, (converting) then make sure it and another app are using the same level. Should not be a huge difference, though.
If you want lossless audio, you should rip from the AUDIO_TS folder on a DVDA. Also in AudioMuxer if you are ripping to flac, (converting) then make sure it and another app are using the same level. Should not be a huge difference, though.
Last edited:
You shouldn't actually be using another app to convert anything, if you mean transcode, just rip the stream you want.
If you mean you are ripping with different apps and getting different file sizes, I would look and make sure I knew exactly which stream or maybe one of the apps is not ripping the stream in it's native format or transcoding in steps. e.g. converting to pcm then encoding as DTS.
If that makes sense to you?
I've never had any problems with AudioMuxer, YMMV.
If you mean you are ripping with different apps and getting different file sizes, I would look and make sure I knew exactly which stream or maybe one of the apps is not ripping the stream in it's native format or transcoding in steps. e.g. converting to pcm then encoding as DTS.
If that makes sense to you?
I've never had any problems with AudioMuxer, YMMV.
OK, let's back up here. 999 times out of 1000 the VIDEO_TS folder is going to contain lossy DTS or AC3 or both, especially on a mch disc.
It's mostly included on DVDA discs to be compatible with non-DVDA capable disc players, such as a "regular" DVD player as likely found in a car in most circumstances.
The AUDIO_TS folder on a DVDA will always contain lossless, per the DVDA specs. Either mlp encoding or pcm is allowed in this folder per spec.
But if you are going to make a quick and dirty DVD, and the DVDA has a VIDEO_TS folder with the same songs, chances are they will be lossy, and I would just rip whichever stream I wanted and use it to make the DVD.
The lossless mlp encoded stream is not allowed on a DVD. You can of course extract and convert to pcm, then re encode to DTS or AC3 but it would just be extra steps.
It's mostly included on DVDA discs to be compatible with non-DVDA capable disc players, such as a "regular" DVD player as likely found in a car in most circumstances.
The AUDIO_TS folder on a DVDA will always contain lossless, per the DVDA specs. Either mlp encoding or pcm is allowed in this folder per spec.
But if you are going to make a quick and dirty DVD, and the DVDA has a VIDEO_TS folder with the same songs, chances are they will be lossy, and I would just rip whichever stream I wanted and use it to make the DVD.
The lossless mlp encoded stream is not allowed on a DVD. You can of course extract and convert to pcm, then re encode to DTS or AC3 but it would just be extra steps.
himey
2K Club - QQ Super Nova
- Joined
- Nov 11, 2013
- Messages
- 3,487
Different bitrates?
Thank you. Can you clarify what you mean by “the same level”?
Also does anyone know if flac ripped from AUDIO_TS can be muxed to DVD-V? I wasn’t able to achieve this.
The reason I don’t just author a DVD-A is because the only player I have is a PS5. Maybe I will have to buy a better player in the future.
Would you use AudioMuxer to do this? Or is there a different/better way?
Two possibilities:
- FLAC files have various levels of lossless compression, from 0-8, where 8 has the smallest file size (most lossless compression), the default used by most is Level 5, however not all players can play every level.
- Alternatively, there could be normalisation taking place during the conversion so the signal level will change, the normalised one would come out louder if the original wasn't normalised - we perceive louder as different/better.
No FLAC is not supported by DVD-V you can have Dolby, DTS or stereo PCM.
If you have a DVDA that has audio in the VIDEO_TS folder, you need to copy that folder out, (or possibly direct from disc) then you can extract the lossy audio with AudioMuxer and proceed on and make a quick and dirty DVD .iso with same.
Alternately, you could use DVDAudioExtractor or another app to extract the lossy files, and use AudioMuxer to make the DVD .iso and burn to disc.
Hope that makes sense. No coffee yet.
In any event grab the files from the folder and use AudioMuxer to make the DVD .iso.
As others have mentioned... The reason your .iso file is so much smaller than the DVD-A source is because it only includes 'DVD-V' lossy (AC3 and/or DTS) audio and (MPEG-2) video data.
EDIT: Just-so-you-know... Creating/authoring DVD-Audio discs requires specialist software, as the process is not the same as creating/authoring DVD-Video discs!
DVD-Video discs place all their data within an 'VIDEO_TS' folder. DVD-Audio discs place 'lossless' (.mlp (lpcm)) audio within an 'AUDIO_TS' folder.
Out of interest... What is the DVD-A source?
Last edited:
Shame we can't have all this on a sticky somewhere, but I understand why I guess.
It's been a while since I used AudioMuxer to create a DVD but I just did a quick run through by mounting a DVDA .iso, used AudioMuxer to extract the lossy files from the VIDEO_TS folder, then set it up to create the DVD .iso.
Pretty painless.
It's been a while since I used AudioMuxer to create a DVD but I just did a quick run through by mounting a DVDA .iso, used AudioMuxer to extract the lossy files from the VIDEO_TS folder, then set it up to create the DVD .iso.
Pretty painless.
Great, thank you
Thanks for the reply. One DVD-A source is In Absentia. The DVD-V ripper gave me a better quality DTS file than DVD Audio Extractor, but only as one continuous file for the whole album. This was really the main question - how did I get two different outcomes and is there a better way to back up the discs.
The other DVD-A source is Brothers in Arms. When I tried to use the DVD-Ripper it scratched my disc! So disappointed, as I got it brand new from overseas and paid a premium price.
Fortunately now I do have, as mandrix says, a “quick and dirty” DVD-V backup of both. In Absentia is around 1GB and Brothers in Arms is under 700MB. It’s not ideal but I guess it will have to do until I find a better way. Thanks for all the info, everyone.
It is possible to mux 6-channel LPCM audio within the .vob container but at it needs to be limited to 48kHz at 16-bits...
Last edited:
Similar threads
