IPB

Welcome Guest ( Log In | Register )

Lame and surround
Fr4nz
post Aug 6 2003, 12:45
Post #1





Group: Members
Posts: 102
Joined: 30-June 03
From: Venice (yeah, city of the gondola!!)
Member No.: 7470



Hi guys. I've read many past threads about Lame and encoding movies soundtracks from AC3 to Dolby Surround1/2. While many people claim that Lame preserves the phase informations thanks to its safe joint stereo mode, in this thread http://www.hydrogenaudio.org/forums/index....t=0&#entry47454 it's stated that only at very high bitrates (for e.g. --alt-preset extreme or insane(!!)) Lame can conserve surround infos in a decent way.

Anyway i've encoded lots of movie soundtracks with Lame, and the --alt-preset standard setting seems quite good to me for surround1/2 tracks.

Thanks for any answer!

Fr4nz
Go to the top of the page
+Quote Post
 
Start new topic
Replies
TrNSZ
post Aug 6 2003, 14:20
Post #2





Group: Developer
Posts: 717
Joined: 25-September 01
Member No.: 20



What do you mean by Dolby Surround? If you are speaking of files that are hinted for the Dolby Pro Logic technology, then using --alt-preset standard should be adequate for most samples to preserve most imaging, but I would certaintly recommend using "extreme" for the extra headroom.

I can remember back to when the r3mix preset was being moved to use VBR MTRH method, and there was some testing of Pro Logic encoded with LAME MP3. I believe it was found that the rear channels had definate weirdness when nssafejoint (nsmsfix=1.0) wasn't used. Keep in mind that was a non-scientific test done ages ago that wouldn't fly around HA nowadays without some real testing.
Go to the top of the page
+Quote Post

Posts in this topic
- Fr4nz   Lame and surround   Aug 6 2003, 12:45
- - sld   Pardon me, but did you ask a question?   Aug 6 2003, 13:17
- - Fr4nz   Yes, sorry for my english The question would be...   Aug 6 2003, 13:21
- - TrNSZ   What do you mean by Dolby Surround? If you are sp...   Aug 6 2003, 14:20
- - Fr4nz   QUOTE (TrNSZ @ Aug 6 2003, 05:20 AM)What do y...   Aug 6 2003, 14:32
- - smok3   i remember the thread on HA where someone was test...   Aug 6 2003, 14:37
- - 2Bdecided   I've always wondered about these two threads: ...   Aug 6 2003, 14:43
- - Fr4nz   Lol you're post is a little fucked up but I un...   Aug 6 2003, 15:00
- - Lev   QUOTE EDIT: sorry this is so long - there have bee...   Aug 6 2003, 15:10
- - Gabriel   David, your post would probably be more understand...   Aug 6 2003, 15:23
- - CiTay   QUOTE (Gabriel @ Aug 6 2003, 04:23 PM)David, ...   Aug 6 2003, 15:37
- - TrNSZ   Yeah, it's the board formatting causing the er...   Aug 6 2003, 16:02
- - 2Bdecided   QUOTE (TrNSZ @ Aug 6 2003, 03:02 PM)Yeah, it...   Aug 6 2003, 17:08
- - Fr4nz   If I remember well --alt-presets uses nssafejoint ...   Aug 6 2003, 17:51
- - TrNSZ   I recall having a similar discussion on the r3mix ...   Aug 6 2003, 17:56
- - kxy   QUOTE (Fr4nz @ Aug 6 2003, 08:00 AM)Lol you...   Aug 6 2003, 18:41
- - Fr4nz   QUOTE (kxy @ Aug 6 2003, 09:41 AM)QUOTE (Fr4n...   Aug 6 2003, 18:54
- - Fr4nz   So guys --nsmsfix 1.0 is the way to go for encodin...   Aug 7 2003, 09:05
- - 2Bdecided   QUOTE (Fr4nz @ Aug 7 2003, 08:05 AM)So guys -...   Aug 7 2003, 10:42
- - Fr4nz   QUOTE (TrNSZ @ Aug 6 2003, 08:56 AM)II guess ...   Aug 7 2003, 11:19
- - 2Bdecided   I've had an email from Frank. He asked 6 sensi...   Aug 8 2003, 13:33
- - Fr4nz   David you're totally right. If I put my ears n...   Aug 8 2003, 13:45
- - Fr4nz   David are you alive?? I'm waiting for a PM rep...   Aug 10 2003, 11:04


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 21st December 2014 - 09:42