Muxer Bit Rate Too High?

Why would a DVD encode fail because the "muxer bit rate is too high" when the settings are at the factory defaults of 4Mbs/7Mbs? (Actually, I did set motion estimation to "best" instead of the default of "better," if that makes any difference... and I forgot to switch to two-pass VBR in this instance upon resetting to the defaults as well, but I don't think that's what made the build fail)

I'm trying to get 4.1 G worth of stuff onto the DVD, by the way.

Here's my log, if it's any help:

Starting DVD Build CABIN...
Compiler Initializing...
Precompiling Project CABIN
Parsing Assets...
Encoding Assets...
Compiling VMG Information...
Created 39 PGCs in VTSM1
Created 5 PGCs in VTSM2
Created 8 PGCs in VMG.
4 Menu(s) will be created...
Compiling Menu PGCs...
Compiling Menu#1 (Menu 1)...
Rendering Menu:Menu 1,Language:1...
Compiling Menu#2 (Menu 2)...
Rendering Menu:Menu 2,Language:1...
Compiling Menu#3 (Menu 3)...
Rendering Menu:Menu 3,Language:1...
Compiling Menu#4 (Menu 4)...
Rendering Menu:Menu 4,Language:1...
Generating Transition: VTSM #01, VOB #1...
Generating Transition: VTSM #01, VOB #2...
Generating Transition: VTSM #01, VOB #3...
Generating Transition: VTSM #01, VOB #4...
Generating Transition: VTSM #01, VOB #5...
Generating Transition: VTSM #01, VOB #6...
Generating Transition: VTSM #01, VOB #7...
Generating Transition: VTSM #01, VOB #8...
Generating Transition: VTSM #01, VOB #9...
Generating Transition: VTSM #01, VOB #10...
Generating Transition: VTSM #01, VOB #11...
Generating Transition: VTSM #01, VOB #12...
Generating Transition: VTSM #01, VOB #13...
Generating Transition: VTSM #01, VOB #14...
Generating Transition: VTSM #01, VOB #15...
Generating Transition: VTSM #01, VOB #16...
Generating Transition: VTSM #01, VOB #17...
Generating Transition: VTSM #01, VOB #18...
Generating Transition: VTSM #01, VOB #19...
Generating Transition: VTSM #01, VOB #20...
Generating Transition: VTSM #01, VOB #21...
Generating Transition: VTSM #01, VOB #22...
Generating Transition: VTSM #01, VOB #23...
Generating Transition: VTSM #01, VOB #24...
Generating Transition: VTSM #01, VOB #25...
Generating Transition: VTSM #01, VOB #26...
Generating Transition: VTSM #01, VOB #27...
Generating Transition: VTSM #01, VOB #28...
Writing VIDEO_TS.VOB
Compiling Menu PGCs...
Writing VTS_02_0.VOB
2 VTSs and 2 Titles will be created...
Compiling VTS#1 (Track 1)...
Muxing VTS_01_1.VOB
Muxer Bitrate Too High

Build cancelled
Formatting finished.
Building was not successful.
Ha-ha!

(Ok, that last line was paraphrased...)

Also, back in FCP my Quicktime Video Compressor settings are set to Quality= 100% (and "best", under the advanced option there) Is this related to the muxer bit rate? I didn't see any setting in units of Mbps in this window...

How many tracks of Audio/video are you using?

you must remeber that the max limit for DVD is 9.8Mbps Audio & Video together

if you have 7Mbps video then you only have 2.8Mbps for other Tracks

If you have an AC3 5.1 mix plus a PCM Stereo track then you may be tipping the limit over 9.8Mbps hence "Bitrate too high"

Audio streams in linear PCM format use at least 768kbps per channel (16-bit/48kHz), making 1.536Mbps for each stereo stream.


Try lowering the Max video rate to 6.5Mbps


Ben



Post Edited (01-18-06 06:35)



For instant answers to more than one hundred common FCP questions, check out the LAFCPUG FAQ Wiki here : [www.lafcpug.org]

I have two tracks of video, but never simultaneously. One track is for the title/intro and they other is the bulk of the content (the main show and it's chapter menus). Each has stereo audio, but that's it.

I'll try lowering the Max video rate and see if that helps, thanks.

scotty

very same thing happened to me yesterday: I burned the first DVD no error, started burning the second, I got the same error. I had AC3 audio and Video file with 4 tracks. My bit rate was all the way own to two.
Anyway, I turned off DVD Studio Pro, turned back on, still getting error. I shut the whole computer down, and turned back on; no more error...

Just sharing what happened... I am sure you already tried that...

emre



Who controls the past, controls the future.
Who controls the present, controls the past.

The desparation method for all these problems is to save the project as one self-contained, stand-alone movie with mixed down audio and one video track.
In FCP5, it's Export, QuickTime, Default Settings. Do not use QuickTime Conversion.

Close down the original project, open the new movie and compress, or export, or play back from there.

That one extra step solved an enormous number of problems hiding in the original production TimeLine.

Koz

I agree with Koz -- export a self-contained movie first. I rarely simply export from the timeline Using Compressor, and never Using QuickTime Conversion unless I'm creating an MPEG-4 or WMV version of the edit for web/FTP/e-mail purposes. Self-contained movies are far more stable, allow you a great deal of mobility (need to move to another computer for the burn? Just take one file), and save enormous amounts of outputting/burn time in the long run.

There's one other thing that tells you. If you can't produce that show file on your hard drives because there's no room, you don't really have enough room to edit, either. That will kill you the first time you need to render a complicated edit or export to a compressed format.

You will have time for a vacation in Boca Raton waiting for it.

The system may also not let you play back to tape.

That will be rough to explain to the client.

Koz