Question about WMV audio compression

If you export a WMV and go to the audio tab, you get the option for variable or constant bitrates. I noticed that if you choose constant (CBR), each option has a plain CBR mode or an (A/V) CBR mode. What's the difference between these two?

Thank you for your responce, Tom. But what I like to know, will converting to 25 or 30 fps leave me with quality problems like the ones mentioned before or will motion be as smooth as the original source?

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Planning for Macbook (pro?) Questions about recording audio + multitasking

Hi Everyone
I am seriously contemplating switching to a Mac book (Pro?) in the next few months, and I want to clarify issues about recording audio.
I record music and other stuff at our local church using a mixer and feed stereo straight into a pc which records using the excellent Adobe Audition (... well it works for me :-)
To start with I expect I'll be using GarageBand and later look at other solutions such as ProTools I used to use on the PC.
QUESTION
I would welcome experienced users to comment on how well GrageBand or similar can multi task while recording is taking place. In other words what can I do - Not do, while recording.
Be honest please.
I worry I might get an exagerated reply from an Apple evangelist and I'm not seeking perfection, just knowledge of practical experiences.
I'd like an idea of what limits present users have found running recording apps like Garageband or similar.
As an example : what experiences running large wordprocessing application or Internet (e.g. FTP or Safari) while recording?
Replies appreciated
Pete

If it's an important recording or a once-only opportunity to record something then I would seriously advise against multi-tasking on any computer, PC or Mac, whilst recording. Dedicate all processing power to capturing the recording, and if you want to browse the web/update your resumé whilst recording then use another computer!

Question about multiple audio tracks

Hello,
I see that imovie has only 2 audio tracks available when creating a movie. I need more than two since I will be working with a voiceover track, a soundtrack and at least one background/environment track all at one time. I won't be able to use the sound recorded with the video so that "track" is not an option.
My question is; Am I out of luck here and need to spend the 1K for studio pro to add more multiple audio tracks?
Also, I tried working with garageband but since all of my audio tracks import in at a minimum of 40 beats per minute, the voiceovers are all sped up and sound chipmunky.
Thanks for any help!

Well I didn't mean to irritate you...LOL And yes, I realize that this is the iM 6 forum but the gist of my question was related to multiple audio tracks in iM and thought I would ask about it in the forum pertaining to the latest release.
I had already posted a question in the GB forum regarding the bpm problem and found no answers so I was pretty much about to shelve that idea and forgo the whole garageband thing; this without knowing about the new "swap" features. I just updated to iM 6 yesterday.
As far as the "on-tape" raw audios: I was working on my movie in iM4. I wanted to add more audio bits but I don't have a proper mic for my G5 so I recorded the audio bits on dv8 tape through my camcorder. I imported the video (the image was the inside of my lens cap!), extracted the audio, took those audio files and imported them into GarageBand. That's when I noticed the bpm problem.
I'm sorry about the lack of info I originally gave but like I said, I had pretty much gave up on the idea of using GarageBand. I'm pretty new at this and I'm trying to decide what I need in terms of software to get what I want out of my movie. I'd be willing to pay for FCxp but still looking into whether I need to do just that or whether I can get by by using imovie and now it looks like GarageBand too.
ah, thanks for that
what irritates me, Prince wrote:
The audio tracks were voiceovers that came from my
dv8tape, imported into imovie4.
... ehm, but this is the iM 6(six) section, as said,
iM 6 allows now "swapping" files with GB3... (I'm way
back in the 90ies.... see my specs... )
so, video is in some iM, and he wants to use the
actual "on-tape" raw audios...
I thnik we need a little more detail...

Basic Questions About Editing Audio

I am new to Final Cut Express and can get around fine just had a few basic questions to do more things with it.
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That should be all for now...Thank you very much

RC
Shift-L toggles clip linking on or off.
You use keyframes to adjust audio volume.
First, enable keyframes by clicking the zig zag button at the bottom left of the timeline. You should see red lines appear in the audio clips of the timeline.
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Question about Export - Audio mixdown

Ive been wondering, why is there option boxes for 32 and 16 bit? I understand dithering. But is this just to let adobe know what bit rate it is? why?
Maybe, is it for this?? : someone being in a hurry, for a quick mixdown for a cd-ready track they could hit 16 bit and enable dither, and youll notice the "Dither Options" is the same dithering program inside Edit -> Convert Sample Type (F11) in multitrack view.
And 32 bit is just to keep it good if you plan on editing it later, but i dont get this: Why adobe needs to know at mixdown, the actual waves should already be carrying the bit information, right?
But what if the track was already dithered using Waves, Izotope or some other on the master fader for a quickfix...would leaving it at 32 be no problem? And if I put it at 16 would it try to chop it off more?
Sorry, please someone explain.
Adobe audition is not as simple as protools...sorry about my rant the other day, i understand i made a few mad but they probably took it the wrong way and I probably said it the wrong way, I was really looking for help. it just got me frustrated. I am an adobe auditon user too, as well.
And just wondering, What .wav format do you guys save your Final master in?
me, Ive been using ACM Format .WAV (16 bit 44.1 of course)
once again, sorry

djak24k wrote:
Sorry, you lost me there, what do you mean by 2 16 bit files? like 2 in one session? or one on stacked on another? and run out of steam?
Yes, two in one session. If one of them is 6dB louder (or quieter) than the other, then you'd need at least 17 bits to represent all the possible data in the output.
And since i DJ, should I start recording in 16 bit? I have always kept 44.1 32 bit when in adobe because its the default, and mixed down, and had to master and dither in edit view in order to make it go on a cd... And the music is already mastered, but I go ahead and record in 32 bit, which i dont think would cause a problem - BUT dithering on top of dithering like i do to make it 16 again, that could be bad couldnt it?
You shouldn't ever dither twice - you end up with twice as much added noise as you need, and it very likely won't work properly.
Steve, whats your final 16bit-44.1 format? Ive noticed some of my cds havent been playing in 1, later on the cd players motor burnt out (impala 2004- im sure it was just getting old) and got a completely new cd player (the stock tray kind) and i still get errors, but they play everywhere else... and ive been doing ACM ever since I learned what redbook was. Well, at least in adobe.
Ah, I meant to mention that. You shouldn't ever use ACM for anything, because it gets processed by the very dubious processing in the OS. What you should use is Windows PCM, because this is saved directly. So, the only acceptable format is 44.1k 16-bit stereo PCM wav.
The safe way to process your audio is to do a 32-bit mixdown, and then in EV do the dither using Ozone. After that, convert the file (which is effectively a truncation) to 16-bit and do no more processing at all. The rule is "Dither Once - Dither Last". If you look in the Ozone Dithering Guide you will find more information about exactly what to do.

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A few months back I've been to Nepal, enjoying the people and trekking. I carried my Canon HV20 (1080i-25 fps) in a small backpack and I bought a small Canon IXUS100 fotocamera (with video 720p-30fps) as a backup and carried it on my belt.
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Thank you for your responce, Tom. But what I like to know, will converting to 25 or 30 fps leave me with quality problems like the ones mentioned before or will motion be as smooth as the original source?

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Hi
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Quote from: mongkb on 06-June-13, 12:49:25
Does it only support through S/PDIF output?
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http://www.msi.com/product/mb/Z87-GD65-GAMING.html
Click on Specifications / Detail.
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In earlier years with iMovie '04 or '06 (cannot recall) I made many novice errors and ended up losing audio to my finished movie. I also lost footage.
This time around with iMovie '11 I don't to make such novice, ignorant errors.
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