16 bit vs 32 bit audio format

FCE is requiring me to render clips when I put them into the timeline. Apple Support tells me that no initial rendering is required for clips with 16 bit format. My clips (JVC Everio -> Streamclip -> FCE) are 32 bit. How can I convert my 32 bit clips to 16 bit?

MORE INFO
Apple Support told me to use, in Streamclip, "Export to DV", compression DV(DV25), standard NTSC. I see no sound options.
Looking for Sound options, I tried "Export to Quicktime" which has Sound options. Set options as you suggested. Imported resulting .MOV to FCE. Item Properties show it as 16 bit (yeah!), BUT when taken to timeline, the red bar appears, requiring rendering (which is what I'm trying to avoid).
Am I doomed to having to render every clip I put in to the timeline before I can work with it?
Scott

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Sequence audio format stuck on 32-bit Floating Point

Hi,
The audio format for all my sequences is set to 32-bit Floating Point when I check them in the browser's Aud Format field. When I manually change the format in the sequence settings nothing changes in the browser and choosing a new sequence set up doesn't seem to help. What I don't understand is that there isn't even an option for 32-bit Floating Point in Audio Settings. Anyone else experience this?
I am using v6.0.6 on osx 10.5.8
Thanks,
Tom

16 bits per channel equals 32 bits stereo. Floating point means that you can, but don't have to, have a non-integer value for your audio.

Seemingly random 8-bit audio files

We're running into several instances of files apparently changing from 16 to 8 bit. We can work on a project with 16 and 24 bit files without any issues. Then, occasionally, when reopening the same project, several files from a project become unplayable. We receive a message that "Logic found 9 files in 8-bit format. These files cannot be played".
We have not found any logical reason for this happening. No common threads between occurances. We ran into this several times a month ago. Then we were fine for a month. Now we just started seeing these errors again.
Is there anything that can be done to prevent this?

Hi jonboy:
Welcome to discussions!
iMovie needs 48KHz/16-bit audio. Anything else will cause you problems.
is it possible for you to send the original footage to a DV Camera set to 16-bit audio and then re-import to iMovie?
Sue

QT movie mostly black after burn/Best way from DV /w 12 bit audio to MPEG2?

Sorry for combining two questions.....
My Quick Time movie looks fine in the QT player but when added to iDVD and then burned, a few frames look OK and then it mostly goes black, as if a terrible filter has been applied. I'm running OS10.4.6 with QT7.0 and iDVD6. The QT movie was output from Avid free DV cause the original had 12 bit audio which foiled iMovie (and One-Step iDVD). Once it's in QT format, this should no longer be an issue, right? And this problem is with the video, not audio.....
Are there free QT to MPEG2 compressers out there? If so, I will burn the DVD myself...
And what's the best and cheapest app to go directly from 12 bit audio DV source footage to an MPEG2 output movie appropriate for DVD? I don't need fancy editing tools - I just wanna get my footage onto DVD.
Any help is appreciated!

I can't download from the Sony because of the fried FireWire IC... Any tape recorded in the Sony is then imported from the Canon. BTW, the new version of the ZR100 is ZR500.
'Ya know, I'm glad you asked this question. I took a 4-pin to 4-pin FireWire cable and connected both camcorders to see if I could record from the Sony to Canon. It works.
Not only that, but I can import from the Sony now into iMovie 6... It wouldn't even show up in System Profiler last summer. I'm now wondering if it was something in Tiger. It wouldn't show up on my neighbor's G5 either, and we keep our systems up-to-date. Maybe it needed a rest.
the QT movie going black after iDVD burn? Think that is due to QT7?
7.1 fixed two problems for me. Try it.
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Export settings - 1080p Video at 24 bit audio ?

Hello,
I usually export my videos in the H.264 format, as I have read online that it is the simplest way to ensure the highest quality for YouTube (with the preset).
However, I am making a music video for someone and they claim that when I render the video in this format is makes the audio duller...
The audio file is 24-bit depth, I am fairly sure that when I am rendering in H264, it is making the audio 16-bit.
(I'll admit, I have no idea what '24 bit' means... I am just reading what it says on the export wizard.)
I have tried exporting in AVI, since it lets you choose 24-bit audio... however, I cant get it to 1080p.
Is there any advice in what format I should export in if I want to retain the 24-bit quality but not loose any video quality.
Thanks in advance, this problem has been really confusing me.
Sam

Thanks for your reply.
Just out of interest,
Here is my audio file.
Any idea what may be causing it to sound 'duller'.
(If it isnt the bit-depth)
I personally could not hear any difference, but the guy I am making it for could.
I think he works in professional sound, so there is a chance he may be using an external audio interface like you said.

Does iDVD support 24 bit audio?

I have a project that calls for impeccable audio quality. The client has supplied me with 24 bit aiff files.
The files import easily into Final Cut Express and when placed in the a 1080i60 timeline show no sign of needing a render.
Does this mean that I will retain the 24 bit quality all the way through export to authoring of the DVD in iDVD? Does iDVD compress the audio in such a way that it will no longer be 24 bit?
I can find little or no information about this particular question in the manuals or the discussions.
Thanks in advance.
Mike Pulcinella

Apple has never said much about the audio encoding in iDVD.
'Traditionally' it was just two channel uncompressed PCM audio; DVD SP (with Compressor) gives several other choices (including Dolby Digital).
Toast gives you the choice of uncompressed PCM or Dolby Digital as well.
Here is what the Toast manual has to say: Audio Format: Choose Dolby Digital or uncompressed PCM. In almost all cases, Dolby Digital is the best choice. It uses less disc space, so you can fit more video on the DVD, and the sound quality is almost the same as PCM.
Data Rate: Choose the bit rate to encode the Dolby Digital audio. Higher bit rates can produce slightly better sounding audio, but use more disc space. Toast uses 192 kbps by default.
Dynamic Range Compression: Enabling dynamic range compression reduces the range between loud and soft sounds in order to make dialogue more audible, especially when listening at low volume levels.
PCM audio should be used if you want to maintain 100% fidelity and only if the audio source is already uncompressed PCM, such as tracks on an audio CD or a high quality audio recording. If the audio files are already compressed (such as MP3 or AAC songs in your iTunes library) do not use PCM—it will not improve the sound quality.
Toast records PCM at 48 kHz / 16 bit levels or 48 KHz / 24 bit levels, which are higher than standard CD quality. Audio that has been recorded at 96 kHz / 24 bit is downsampled automatically unless you choose the 96 kHz / 24 bit option, which maintains the higher quality but significantly reduces disc space.
When you choose PCM, any existing Dolby Digital audio files will be “passed through” without reconverting to PCM.
Hope this helps.

How do I get the most of my 24 bit audio?

We recently shot a project where all our audio was sent to digital recorders at 24 bit, 48k... when I import the files to Premiere there doesn't seem to be any issues, but I can't find settings when creating a new sequence that allows for 24 bit audio (just 12 and 16 bit). If anyone could help me understand the following I would greatly appreciate it:
1. Are there settings for using 24 bit audio in a sequence? If so, where?
2. If there are no 24 bit settings, does that mean my project refers to the original high quality file even though the sequence is set at 16 bit? Or is my 24 bit audio being modified to 16 bit when I drop it into the sequence?
3. I guess the main question is: is it worth it for me to use 24 bit audio in my Premiere projects?
Thank you for the help.
Avery

Hi,
When working with *24bits in a *32 bits floating-point internal environment you have *8 extra bits (these are *wordlengths and have nothing to do with the sample frequency as stated above!) and gives you virtually a endless headroom ( even above 0 db on individual channels).
But at the end (after the master and out of your soundcard that is ***16 or 24 bits) the wordlength gets changed (shortened from 32 to 24 or *** 16 bits) and the sample frequency sampled down eventually as well, the master output has to stay a *little under 0 db *depending of the type of sound.
To answer your question: "It makes perfect sense to work with larger wordlenghts, because no matter you go down to 16 bits at the end, you have a much better sound quality and bigger headroom during mixing and at the end even when it's downsized to 16 bits."
***16 bits in Premiere Pro
David

I'm unable connect my I pad mini to my laptop(window 7,64 bit) after formatting,my iTunes didn't find my device,before format everything working properly but this time lot of problem plz help

I'm unable connect my I pad mini to my laptop(window 7,64 bit) after formatting,my iTunes didn't find my device,before format everything working properly but this time lot of problem plz help

You formatted your computer's hard drive? If so, it's like starting with a new computer unless you restored all of your content from a backup but it does;t sound like that's the case.
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HT204388 8 channel 24-bit audio at 192kHz on my mac mini (HDMI)

when I use 8 channel 24-bit audio at 192kHz on my mac mini with denon 1910 I can't get sound from central speaker. What's the problem?

when I use 8 channel 24-bit audio at 192kHz on my mac mini with denon 1910 I can't get sound from central speaker. What's the problem?

32 bit audio unit bridge unexpectingly quits

I've just updated to Snow Leopard and I've been using Melodyne to fix vocals. When I used Melodyne on the first 3 vocals, everything in Logic was functioning fine but when I try to import the last vocal track into Melodyne, the 32 bit audio unit bridge unexpectingly quits. I've tried quiting and re-opening Logic and the same problem happens at the same spot. On the previous 3 vocal tracks that I fixed with Melodyne, I have already bounced those tracks in place and have got rid of the old tracks. So, the Melodyne plug in is only open on the last vocal track. It seems strange that my Melodyne plug in was working fine with the 32 bit audio unit bridge (as are all of my plug ins) until now.
Any advice anyone?

If you are running Logic in 64-bit mode with a variety of plugins, you're going to have to realise that things probably won't be stable until updates get released.
The AU bridge is a workaround for the transition period, and one that many third-party developers haven't had much of an opportunity to test with their products, so you may well get funky behaviour in certain things.
If you're really stuck, go back to 32-bit mode for your edits, and it's worth contacting the developer of your plugins to see what they say about AU Bridge and 64-bit compatibility.

12 v 16 bit audio in same project

Despite my yelling and screaming, a couple of shooters I used for a recent project set their audio to 12 bit instead of the 16 bit I wanted.
What do I do when it comes to importing the material and then trying to use it in a project where 90% is 16 bit?
And BTW, I had the offenders killed.

resample the 12 bit audio to 16 bit audio and use those audio files in your sequence.

Antares aVOX vocal harmonizer crashes the 32 bit audio bridge, any suggestions?

Antares Vocal Harmonizer crashes the 32 bit audio brigde, intermittently on some Logic songs, But ALWAYS on one song in particular. Any suggestions from anyone?

If you are running Logic in 64-bit mode with a variety of plugins, you're going to have to realise that things probably won't be stable until updates get released.
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If you're really stuck, go back to 32-bit mode for your edits, and it's worth contacting the developer of your plugins to see what they say about AU Bridge and 64-bit compatibility.

24 bit Audio through 16 bit Audio Output

Possibly dumb question but...
I have 24 bit audio files recorded on other equipment. If I edit them in Audition at 24/32 bit but my audio hardware and/or output driver is only 16 bit will that affect the audio processing quality of what I'm doing within Audition?
The output is simply to connect speakers or headphones but everything else such as outputting the processed file to hard drive will be done internally from Audition (i.e. Save As - no mixdowns through external analog outputs or anything).
Will the audio stay 24 bit quality when using 16 bit audio hardware output for monitoring?
Thanks.

No, the files within Audition will be unaffected by the available bit depth of your soundcard. The only time it would matter is, for instance, if you are making CDs from your audio files or feeding digital out to an external 16 bit recorder in which case you will need to down convert your 24 bit files to 16 using dither for best results when you have finished all the editing/processing. But keep the 32 bit files in case you need to go back and do any adjustments.

24-bit audio processing?

Can G4 Quicksilvers process 24-bit audio?
I currently run a MBox to run audio into Pro Tools LE on my machine and I am wondering if it can work properly with a 24-bit session. Thanks!

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I currently run a MBox to run audio into Pro Tools LE on my machine and I am wondering if it can work properly with a 24-bit session. Thanks!

How to check for 12-bit versus 16-bit audio?

Several hours of my first digital recordings were done with 12-bit audio (factory default). Later I changed the camera's settings to 16-bit, but I'm not sure when I did that.
Is there a way to check the audio bit-rate of a clip if the camera doesn't display that information? I'd like to periodically check the imported clips to determine when I started recording with 16-bit audio, because at that point I'll need to change the Easy Setup settings in FCE.
Thanks.

Unfortunately not. FCE assumes you set the easy setup correctly and will capture the audio as if it's that sampling rate. It's unfortunate that some cameras don't display this. If you capture fairly short segments, around 10 minutes, you should be able to get away with it however, especially if you don't capture across a TC break.

16 bit vs 32 bit audio format

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