Variable bit rate audio assets cannot be imported

Extracted some ac3 files from personal content DVDs I authored and burned myself (using DVDSP) to make a compilation. When I try to import these 5.1 ac3 assets, DVDSP is refusing stating: "Variable bit rate audio assets cannot be imported." These ac3 files play fine in QuickTime and other programs that handle ac3 files.
Can anyone help?

Hi:
Please give us some info about the original movie/audio formats and what encoding presets you used in Compressor.
Alberto

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"Variable Bit Rate Audio Not Supported"

Hello -
I have several AC-3 files - sourced from satellite broadcast downloads - surround 5.1, 448kbps/48kHz - that I cannot add to DVD SP. When I attempt to import them into the assests pane, DVD SP reports they are incompatible giving the error message in the subject.
Any ideas?

I too have noticed this today when trying to import a new CD. Every track has a variable bit rate despite not requesting it.
The older version of iTunes did not do this, just this new 7.5. I cannot seem to resolve. I tried to create a custom import without VBR but it ignored this too and did it anyway.
Apple, please help! This must be fixable somehow!

Variable bit rate on importing bug in iTunes 7.5

I have tried importing a new CD into iTunes 7.5, installed this week as an update to the previous version.
Now each track imported comes in at variable bit rates. I cannot seem to stop this. I tried to create a custom import rate without VBR but it ignored it anyway.
Is there a fix for this? 7.4.x and earlier versions was fine.
Mark

Apparently it is related to the new QuickTime AAC encoder.
For more info see http://discussions.apple.com/thread.jspa?threadID=1197343&tstart=0
stefano

NTSC assets cannot be imported into PAL projects.

Hi, i have exported .mov from FCP and when i try to import it into DVD Studio Pro i get the message,
NTSC assets cannot be imported into PAL projects, WHY, it is not an NTSC asset ?
HELP
Paul

Do not use H.264. Use Pro Res or send the timeline straight from Final Cut to Compressor an a PAL preset (or one that you make yourself.) I prefer sending out self-contained versions in case I need to re-rencode or want to make items for various formats.
Movie setting up Compressor *in case you need it) is [here|http://www.dvdstepbystep.com/compressor.mov] Make sure to use PAL and/or make sure you make your preset PAL

Error message "NTSC assets cannot be imported . . . ."

This has left me stumped.
I keep getting the following error message when I try to import m2v clips from compressor:
"NTSC assets cannot be imported into PAL projects"
But I haven't made any of my clips NTSC. Im exporting them out of the same FCP project, through the same settings and destination in Compressor and into DVDSP.
But only some files can be improted in. All the others keep triggering this error message??......

Ive opened the M2v file in Quicktime, and looking through the movie inspector and movie properties there is no mention of it being PAL or NTSC?
What is the size that is being reported?
I am working from the same FCP project as all the other clips I have successfully imported, where the Sequence settings are 'Apple ProRes 422 1440x1080 24p 48kHz'
I used the same M2V settings and Dolby surround sound settings in Compressor too.
So you set the timeline out to a SD PAL preset? What you may want to try is copy a preset, and make sure to set the Video Format in the inspector to PAL and Stream Usage to SD DVD. Save the PAL preset as something like "PALTEST" so it is easy to find and when the item is encoded it will have the words "PALTEST" appended to make sure that you are grabbing the right file. You may want to try that on a small section (smallest clip?) to start. Before doing that you can try to delete the MPEG/PAR files for the problematic ones in case something got corrupted when you bought the original probllem ones in....
What were the Compressor settings that you used? Did you just send to a preset that Apple has in it? What were the names at the end of the files that are giving you issues?

No E-Mail Updates or High Bit-Rate Audio Using WiFi

When I use WiFi and click on the mail icon, my 3GS will not update my e-mail messages. The network activity icon just keeps going and going. Additionally, I cannot get audio streams over 128k on apps such as Wunderradio. Everything works fine on 3G networks and I have enabled the high bit rate option for the apps that have such an option.
The two problems happen on all Wifi networks, so the problem isn't my home network
Anyone else have this problem or know how to fix it?

Yes. I am able to surf the internet and do everything else except for the two problems I outlined in my original post. The icon switches from 3G to the WiFi "fan". Using the Speedtest.net application I have checked my WiFi connection and it is usually at 4,400 kbps download and 1,000 kbps upload.
In case someone asks: I am using an att.net e-mail account, but have also tried my comcast.net account with the same results.
Message was edited by: Chip_Nashville

Variable bit rate is good

hello everyone,
I've been compressing dvd using compressor at 7.8CBR for my pass projects & it looks great. However on my current project I can't pull a good compression due to the large LCD screen in the background so I have to try vairalbe bit rate with min 6.5 & max 8.0 two passes & it looks great.
Does anyone has any similar experience?
I heard that compressor's VBR is not good so I 've never tried but to my understanding, it's better to do 2passes since the software would analyze the movie better.
just some note.
JP
ps: can't wait to upgrade to fcp studio2

It's said the Compressor 2.3 has solved all problems related with VBR in past versions.
Alberto

PlayCenter3: variable bit rate: need to know numerical equival

I am using PlayCenter 3 on my desktop computer and always rip MP3s using VBR (the setting: highest quality). In short, I need to know the information that that setting represents; specifically, the guaranteed minimum bit rate. On my notebook I must use other MP3 software because I do not own a Soundblaster for the notebook. Since I am giving my desktop to my parents I need to know the numerical equivalent of the highest quality VBR setting so that I may enter that into the options of whatever ripping software I finally decide to use.
I learned about *guaranteed minimum bit rate* through reading iTunes' options box.
THANKS! :-)

Is the problem inherently answered in your question?
Why use VBR when you bounce? It's a compromise solution, and has it's own problems. What are soundclicks tech specs? Work to those, getting the file as big as you can, it takes moments to bounce multiple files of varying bit depth etc to see how far you can stretch things before you're over-budget on the file size.
best
Steve

HD DVD (Muxer Bit Rate Too High) - Cannot Burn

I am trying to burn an HD DVD and have used the Compressor preset MPEG-2 setting. I have a Toshiba HD-A2 player and have already tried the .h264 and it didn't work (I know it is not supported). The file actually played though, just very slowly.
Anyway, I read up that the MPEG-2 works with the Toshibas, and have encoded the file into DVD-Studio Pro 4. It plays inside of the program fine under simulation, but when ever I try to either build or burn the disc, I get this:
Building Project Untitled
2/23/07 2:03:00 PM
Build Folder /Users/TheMatrix/Desktop
Starting DVD Build UNTITLED_DISC...
Compiler Initializing...
Precompiling Project UNTITLED_DISC
Compiling VMG Information...
Created 6 PGCs in VTSM1
Created 8 PGCs in VMG.
0 Menu(s) will be created...
Compiling Menu PGCs...
Writing HV001M01.EVO
Writing HV000M02.EVO
1 VTSs and 1 Titles will be created...
Compiling VTS#1 (Track 1)...
Writing HV001M01.EVO
Muxing HV001T01.EVO
Muxer Bitrate Too High
The error is in regards to the Muxer Bitrate. Any help? Thanks in advance.

Means the combination of video/audio stream is too high - did you encode outside of DVD SP using Compressor? You may want to try that (make a new HD MPEG setting) and knock the rates down.
Also FWIW, trying to get it to run on the Toshiba may be difficult at best - take a look for Toshiba HD and there seems to be issues with the newer versions of the firmware
http://discussions.apple.com/thread.jspa?messageID=3737691&#3737691
http://discussions.apple.com/thread.jspa?messageID=4069682&#4069682

Using Variable Bit Rate Encoding (VBR) and playback issues

I have been using VBR when making mp3 for download to "Soundclick.com" in the past, resently, I started to hear complaints from listeners, that my mp3 were garbled, although it is not consistent so, it is true, and I came to believe it was because of VBR. I re-encoded the files in question, and so far the problem has gone away.
The question is this due to OSX 10.5.6, or might it be something with soundclick, I don't know; but it did seem to become evident after loading the OSX 10.5.6 update. I can't find a way to correspond with Apple Development, so I thought to post here. I am also going to pursue this with "Soundclick.com"; VBR seems to be an efficient way to encode, and I would like to keep using it.
If anyone know about this it would be cool to hear for you!
God Bless,
ron c
http://soundclick.com/rone2him

Is the problem inherently answered in your question?
Why use VBR when you bounce? It's a compromise solution, and has it's own problems. What are soundclicks tech specs? Work to those, getting the file as big as you can, it takes moments to bounce multiple files of varying bit depth etc to see how far you can stretch things before you're over-budget on the file size.
best
Steve

What, exactly, is variable bit rate?

I understand the basic concept of VBR, but how does it actually work? I realize that more bits are devoted to the parts of the movie that have the most action. This means that other parts of the movie are subsampled in some way. Is it spatial subsampling, temporal subsampling, or a combination? Temporal subsampling could be done, for example, by dropping every other frame (although I doubt that this approach would give good results). Spatial subsampling could be done by rendering certain frames with less precision (similar to selecting a lower quality for a jpeg image). I have tried to figure out how this works by looking closely at samples, but I can't tell.

Michael,
I understand the basic concept of VBR, but how does it actually work?
Try this page to understand how VBR works, http://www.creativevideo.co.uk/pages/cvpinfo_mpeg2dvd.htm

Export flash vid with VBR? (variable bit rate)

Does AE CS3 have a choice of VBR when exporting Flash Video (FLV)? I'm going thru the Render Queue, but can't find where to change it from CBR.
Thanks, Mates!

No, I don't think so. After Effects only does one-pass rendering/compression, so you're probably better off with Flash Video Encoder or something similar.
- Jonas Hummelstrand
http://generalspecialist.com/

VBR Variable Bit Rate MP3s...HELP!!

I posted a message yesterday regarding pausing problems with VBR MP3s. It seems 2.1.1c playing MP3s using the performance pack has problem pausing and resuming MP3s if they are VBR. I decided to switch back to 2.1.1a and low and behold, now if I play a VBR MP3 it halts at some random point in the middle of the MP3. When I say random I mean it is different for different MP3s but that each track will always halt at the same point. There are no exception thrown but it looks to me like some kind of buffer overflow. Please anybody out there, can you help??

MP3 support was removed from 2.1.1c due to license changes. According to Sun, JMF should now use whatever system decoder it can find. Perhaps upgrading DirectX would help.

Bit rate standards for Compressing video for Captivate

I have been trying to decide whether rto use constant bit rate or a variable bit rate when compressing my video to embed in Captivate.
I have been told by Connect support that a constant bit rate is better for deploying video in Presenter but I am wondering if anyone has information as whether that is also true for Captivate. We are using captive as a means to offer a series of video question and answer sequence for a client of ours, and I am interested in getting the best quality with the smoothest performance in a progressive download flv format
For a simple talking head I am tempted to use a variable bit rate but, I cannot find anything in the seaces I have made that talk about the spec or any pros an cons to that quetsion for Captivate.
Doee anyone have any expereince with that?

I have always used constant bitrate for videos imported into Captivate and that has worked fine. However, I never tried using variable bit rate so I don't know if it will work better or worse.
My guess is that it would be better to go with constant bitrate though because Captivate do have some funny issues with FLV's sometimes and it's probably better not to "stress" captivate ;o)
/Michael
Visit my Captivate blog with tips & tricks, tutorials and Widgets.

Random import bit rates?????????

My import settings are set to: 192kbps 48Khz AAC with NO variable bit rate. For some random reason itunes stated importing my music at random bit rates usually 3 to 7 kbps below my set rate. I decided to "factory refresh" my computer as it was time hoping it would fix the issue but nothing had seemed to fix it unless I install itunes 6.X and even then its a pain. 192 MP3 works great but the AAC encoder is having issues. Any suggestions? itunes says: "encoded with itunes v7.5.0.20, quicktime 7.3.1." is there a new codec or anything.

As I believe first came to light in this thread - courtesy of a heads-up from Flynn and verification and a workaround (if it really bothers you) by b noir - there was a so-far undocumented change in the new version of QuickTime (QuickTime actually being responsible for encoding song files in iTunes) which came bundled with iTunes 7.5.
QuickTime no longer supports Constant Bit Rate Encoding. In its place is Average Bit Rate Encoding.
Although this change is not reflected in the iTunes User Interface, it accounts for the new state of affairs that you noted.

Variable bit rate audio assets cannot be imported

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