Quicktime on Mavericks outputs stuttering audio.

Also some of my video files need "converting" before they play on quicktime. Thus I'm using VLC for now. No stuttering problems with iTunes sound or audio. When will Quicktime be fixed? And is anyone else having these problems?

Same problem. I am an animator and director. All but a small handfull of my video files "convert" when I try to open them. The messed up part is that they are already .mov files. Then it wants to save it again? Do you people know how many of these I have? Are you trying to sell more Hard Drives or something. Fix this quickly, I'm on a deadline and don't want to have to convert 100s of shots and re-import them into my editing software. This is a total waist of time. This is Apple software, it should work seamlessly with OSX.
You are supposed to be the audio visual masters???? Not this time!!!!

Similar Messages

Just upgraded an iMac with 4GB Memory and Intel Processor from 10.6.8 to Mavericks and Quicktime plays m4v files with stuttering audio

I just upgraded an iMac with 4GB Memory and 3.33 Ghz Intel Core Duo Processor from 10.6.8 to Mavericks. I now have Quicktime 10.3 which plays m4v files with stuttering audio. This is a nightmare as I use Quicktime a lot in my research. I have seen similar threads but so far only reporting the problem. For now I have installed Quicktime Player 10.7 (which appears in utilities, leaving Quicktime 10.3 in the main applications list) which plays the same videos with no problem, but it would be good to know if anyone has managed to find a workaround at all, or know if Apple have plans to do anything about it?

Slow performance after installing Yosemite on an older Mac is often caused by inadequate memory. Although you can install the upgrade on a Mac with 2 GB of memory, experience has shown that at least 4 GB is needed for full performance.
Select About This Mac from the Apple menu. If you have less than 4 GB of memory, and your model has upgradable memory, install as much as it can take, or at least that much. Any reputable RAM vendor will have a web form in which you can select the Mac model and be directed to compatible parts.

Stuttering Audio from 10.6.8 Update all Outputs

Hi,
I updated to 10.6.8 and now have stuttering audio using either digital output, headphone output and from the internal speakers so I think something there is a bug.
I tried rolling back 'AppleHDA.kext' using the 'MacOSXUpdCombo10.6.7.dmg' and Pacifist but that didn't help the situation.
Anyone else having similar issues/have an idea for a fix? I don't have a time machine backup with with 10.6.7 unfortunately...

I have a early 2008 macbookpro 2.8 duel with silver keys.
I purchaed the 10.6 disk from the apple store. I've had the machine for years and purchased it refurbished from apple.
I did the erase and install and migrated everything over from external drive, then did update to 10.6.8 and the usb ports still would stop working after a few hours.. Then I read on another apple community forus to reset pram, and pull out the power cable, take out the battery and hold power key for 5 seconds, then restart. that seemed to fix usb issue so far..
But overall my computer seems to be running slower then when using just 10.5.8 and it did not wake from sleep once and I had to force power off and restart.. But maybe its just getting used to 10.6.8. we will see..
Also, on another note, my battery is totally dead, and I can only run computer with power cable.. Will this affect things? it never did with 10.5.8..
Oh, on my erase and install, I just did the simplest version and did not do the full erase to zero using he advanced security measures.. I just did the one where it writes on top of everything..

Apogee Duet FireWire skipping/stuttering audio

I've bought Apogee Duet FireWire back in 2011 when I had another macbook pro and I believe it was OS X Lion powered. The problem started since I updated to Mountain Lion and next upgrades were the same. There was a time when it was not very clean if the drivers at the official apogee's site are fresh enough. But now I have OS X Yosemite and fresh drivers that claim to be for this system. As to hardware, since Apogee had only FW400 wire, later I bought FW800 wire, and then FW800<->ThunderBolt adapter. So now I use this connection: Duet -> FW400/FW800 wire -> FW800/ThunderBolt adaptor -> MacBook Pro. The audio is working normal in 80% of time, but otherwise there are stutterings of the sound. Is there a way to get rid of this problem? Thank you.
Problem description:
Apogee Duet FireWire skipping/stuttering audio
EtreCheck version: 2.1.8 (121)
Report generated 9 Apr 2015 16:22:01 GMT+3
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    MacBook Pro (Retina, 15-inch, Late 2013) (Technical Specifications)
    MacBook Pro - model: MacBookPro11,3
    1 2.3 GHz Intel Core i7 CPU: 4-core
    16 GB RAM Not upgradeable
        BANK 0/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en0: 802.11 a/b/g/n/ac
    Battery Health: Normal - Cycle count 106
Video Information: ℹ️
    Intel Iris Pro
    NVIDIA GeForce GT 750M - VRAM: 2048 MB
        Color LCD spdisplays_2880x1800Retina
        2757 spdisplays_1080p
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 0:58:24
Disk Information: ℹ️
    APPLE SSD SM0512F disk0 : (500,28 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / [Startup]: 499.07 GB (6.42 GB free) (Low!)
            Encrypted AES-XTS Unlocked
            Core Storage: disk0s2 499.42 GB Online
USB Information: ℹ️
    Apple Internal Memory Card Reader
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
    Wacom Co.,Ltd. Intuos5 touch S
    Apple, Inc. Keyboard Hub
        Apple, Inc Apple Keyboard
Firewire Information: ℹ️
    Apogee Electronics Duet 400mbit - 400mbit max
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
        Apple Inc. Thunderbolt to FireWire Adapter
Configuration files: ℹ️
    /etc/sysctl.conf - Exists
Gatekeeper: ℹ️
    Anywhere
Kernel Extensions: ℹ️
        /Applications/DAEMON Tools Lite.app
    [not loaded]    com.disc-soft.DAEMONTools.VirtualSCSIBus (1.0.2 - SDK 10.8) [Click for support]
        /Applications/Parallels Desktop.app
    [not loaded]    com.parallels.kext.hidhook (9.0 24172.951362) [Click for support]
    [not loaded]    com.parallels.kext.hypervisor (9.0 24172.951362) [Click for support]
    [not loaded]    com.parallels.kext.netbridge (9.0 24172.951362) [Click for support]
    [not loaded]    com.parallels.kext.usbconnect (9.0 24172.951362) [Click for support]
    [not loaded]    com.parallels.kext.vnic (9.0 24172.951362) [Click for support]
        /Library/Extensions
    [loaded]    at.obdev.nke.LittleSnitch (4234 - SDK 10.8) [Click for support]
    [loaded]    com.Apogee.driver.DuetFWOverideDriver (1.4.4 - SDK 10.9) [Click for support]
    [not loaded]    com.wacom.kext.ftdi (1 - SDK 10.10) [Click for support]
        /Library/Extensions/HuaweiDataCardDriver_10_9.kext/Contents/PlugIns
    [not loaded]    com.MBB.driver.MBBACMData (5.01.03 - SDK 10.8) [Click for support]
    [not loaded]    com.MBB.driver.MBBActivateDriver (5.01.03 - SDK 10.8) [Click for support]
    [not loaded]    com.MBB.driver.MBBEthernetData (5.01.03 - SDK 10.8) [Click for support]
        /System/Library/Extensions
    [loaded]    com.Cycling74.driver.Soundflower (1.6.6 - SDK 10.6) [Click for support]
    [not loaded]    com.Megafon1KY.driver.YotaDevices (1.0.3) [Click for support]
    [not loaded]    com.Quanta.driver.QuantaDriver (1.0.3) [Click for support]
    [not loaded]    com.Yota1KY.driver.YotaDevices (1.0.3) [Click for support]
    [not loaded]    com.anydata.driver.AnydataUSBCDC (4.0.2) [Click for support]
    [not loaded]    com.anydata.driver.AnydataUSBCDCACMData (4.0.2) [Click for support]
    [not loaded]    com.wacom.kext.wacomtablet (6.3.11 - SDK 10.9) [Click for support]
    [not loaded]    com.wetelecom.driver.WeModem (1) [Click for support]
    [not loaded]    net.code4mac.driver.C4MUSBCDC (4.0.2) [Click for support]
    [not loaded]    net.code4mac.driver.C4MUSBCDCACMData (4.0.2) [Click for support]
Startup Items: ℹ️
    HWNetMgr: Path: /Library/StartupItems/HWNetMgr
    Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
    [running]    at.obdev.LittleSnitchUIAgent.plist [Click for support]
    [running]    com.ApogeePopup.plist [Click for support]
    [loaded]    com.google.keystone.agent.plist [Click for support]
    [running]    com.huawei.mbbservice.plist [Click for support]
    [loaded]    com.roox.YotaAccess.Agent.CheckTrash.plist [Click for support]
    [loaded]    com.roox.YotaAccess.Agent.plist [Click for support]
    [running]    com.wacom.wacomtablet.plist [Click for support]
    [running]    HWPortCfg.plist [Click for support]
Launch Daemons: ℹ️
    [running]    at.obdev.littlesnitchd.plist [Click for support]
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.adobe.SwitchBoard.plist [Click for support]
    [running]    com.aladdin.aksusbd.plist [Click for support]
    [running]    com.aladdin.hasplmd.plist [Click for support]
    [running]    com.DuetDaemon.plist [Click for support]
    [loaded]    com.google.keystone.daemon.plist [Click for support]
    [loaded]    com.lsreset.plist [Click for support]
    [running]    com.roox.YotaAccess.Service.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.bittorrent.uTorrent.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins: ℹ️
    Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    Flash Player: Version: 16.0.0.305 - SDK 10.6 Cannot contact Adobe
    AdobePDFViewer: Version: 10.1.1 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.6 - SDK 10.9 [Click for support]
    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
Safari Extensions: ℹ️
    Open in Internet Explorer
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Flip4Mac WMV [Click for support]
    WacomTablet [Click for support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
         6%    WindowServer
         5%    coreaudiod
         2%    studioapp
         1%    Little Snitch Agent
         1%    Google Chrome
Top Processes by Memory: ℹ️
    292 MB    Google Chrome
    258 MB    Skype
    206 MB    studioapp
    172 MB    mds_stores
    137 MB    WindowServer
Virtual Memory Information: ℹ️
    10.31 GB    Free RAM
    4.47 GB    Active RAM
    1.06 GB    Inactive RAM
    1.32 GB    Wired RAM
    2.23 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Apr 9, 2015, 03:23:29 PM    /Library/Logs/DiagnosticReports/WacomTabletDriver_2015-04-09-152329_[redacted]. crash
    Apr 9, 2015, 03:23:19 PM    Self test - passed
    Apr 8, 2015, 11:20:34 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Adobe Photoshop CS6_2015-04-08-232034_[redacted].crash
    Apr 7, 2015, 04:24:04 PM    /Library/Logs/DiagnosticReports/Adobe Illustrator_2015-04-07-162404_[redacted].hang
    Apr 7, 2015, 04:19:53 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/QuickLookSatellite_2015-04-07- 161953_[redacted].crash
    Apr 7, 2015, 04:19:38 PM    /Library/Logs/DiagnosticReports/WacomTabletDriver_2015-04-07-161938_[redacted]. crash
    Apr 7, 2015, 04:13:24 PM    /Library/Logs/DiagnosticReports/Skype_2015-04-07-161324_[redacted].hang

I just started having problems with my Duet this afternoon and found this thread so I thought I'd give a shout out to you guys to see if you have any ideas before talking with the company....
I've had my Apogee Duet since about feb and never had any problems until this afternoon. For some reason the Duet doesn't seem to want to interface with my computer at all anymore. When plugged in, the lights light up on the Duet however under system profiler I get the "unable to list firewire devices" error msg. Under the Sound tab in preferences, the Duet is not listed as an available I/O. In the Apple Midi Setup or whatever it's called in utilities, the icon for the Duet is still there but it doesn't show it as online. I can still press the big button and the little green light cycles through input 1/input 2 yada yada yada, but the computer doesn't seem to see it. When I open up Maestro, both the control and mixer screens are completely blank. I've tried resetting the unit (holding button down for 5 seconds), using different firewire cords, and finally uninstalling and reinstalling the Maestro software (using the Duet software - May 2008 link on apogees site) and none of these things solve the problem. I haven't had a chance to plug in another FW400 device into my Macbook Pro to see if it's a problem with the port, but I get the same result with the Duet on my MBP and my G5 PPC tower, which leads me to believe it's a problem with the unit. Also, since it's bus-powered, the lights wouldn't light up if the ports on the computer were fried, right?? Has this happened to anyone else?? Any ideas on how to fix it before calling up Apogee?? Any help would be greatly appreciated!

Stuttering audio from airport express...

I installed my first airport express yesterday. Had some problems: my main computer couldn't load the Airport Utility (see http://discussions.apple.com/thread.jspa?messageID=7132922&tstart=0), and I've gotten things configured through another computer but I'm getting lots of stuttering audio when I attempt playback.
There's a pattern to it: the song starts fine, and then about 3 seconds in it starts stuttering. A buffering issue?
No problems on the network that I'm aware of.
I tried setting Quicktime to "safe mode waveout", but no help.
Any tips?

Typically, "stuttering" can be a result of either low signal strength or high signal noise values, or both.
It is very possible that you may have some form of Wi-Fi interference in the immediate area that is preventing your AirPort Express Base Station (AX) from getting a good clean signal.
I suggest you perform a simple site survey, using utilities like the following to determine potential areas of interference, and then, try to either eliminate or significantly reduce them where possible:
For Macs:
o MacStumbler
o iStumbler
For PCs:
o NetStumbler
o WiFi Manager

Play a QuickTime file with eight separate audio channels

I'm trying to play a QuickTime file with eight separate audio channels but they only play in stereo...... the same QT file will play all 8 channels separately in Qlab, which has separate level controls for each channel, and which "sees" my Digidesign 002 audio interface. But QT does not recognize the interface, nor does Audio MIDI Setup utility, apparently..... it will play all 8 channels mixed to stereo through channels 1 and 2

The following will answer both your questions a) and b).
Click on your master timeline and press cmd+0 (zero) to bring up Sequence Settings, then click on the Audio Outputs tab on the right. Click on the Outputs option and change it to 6. You can leave them as Stereo pairs.
Now, back on your timeline, you need to make sure all your audio is organised so each track. A1, A2, A3, A4 etc has all the relevant media on it.
Then, on the left of the timeline you see the Destination toggle buttons, then you see the Padlocks to lock tracks, then you have the Toggle Auto Select squares. If you right-click on the Toggle Auto Select squares you bring up a little sub-menu, at the top of this list you'll see Audio Outputs, which will show the stereo channels for that particular track. As you've changed the number of Audio Outputs in the Sequence Settings, the list will show: 1&2, 3&4, 5&6. You just tick whichever channels you want.
In your case, you have dialogue on the first 4 tracks, no problem, just go down through tracks 1,2,3 and 4 as described above and assign these to Audio Outputs 1&2.
Then just go down through your music and effects audio tracks and assign them accordingly.
Now, when you export your timeline as a self-contained media file, it will have different audio channels.
I hope that makes sense. When you change the number of audio outputs as described in the first step, I believe the rest of it is fairly self explanatory, once you know where the settings are.

Quicktime + 5.1 output + MIDI

Hi,
I'm fighting with Quicktime to output 5.1 audio AND a MIDI signal via USB simultaneously. I've got an unusual AV presentation set-up that requires HD projection, 5.1 audio, AND a MIDI signal to control a servo shutter device which blacks out the video projector signal at synchronised moments in the presentation. Currently I've got it all to work from a Mac Mini over optical using Perian, with the sub-woofer channel going to an analogue input on the shutter controller. I'd prefer using MIDI to control the shutter for a number of reasons, but I don't know where to start - it's already so tricky just to get 5.1 out of the Quicktime / Mac Mini combo. My most basic question is whether it's possible to playback a file that's Quicktime HD (DVI) + 5.1 (OPTICAL) + MIDI (USB) all out of a Mac Mini without additional hardware. I've successfully used Perian previously, but without the additional MIDI output.

Quicktime as default downmixes the audio to stereo, that's why you can't hear your video in Surround. However, there is this tool - Perian - which allows you to change output format (EG: stereo, multi-channel output).
You can get it from here: http://perian.org/

PLEASE HELP - STUTTERING AUDIO

This could be a long one so I apologize. I am building a slide show by importing/dragging photos into iMovie using various transitions between them. I have well over a hundred photos. I also adjusted the length of these pictures in iMovie. I added audio from iTunes and used iMovie to trim the audio I needed to fit the individual picture or pictures. Everything was going great until approx 20 minutes into the video - it started getting real slow when using various commands and then the recently added audio would stutter once in a while. I kept adding audio and the stuttering got much worse until NOW ALL OF THE AUDIO HAS A TERRIBLE STUTTER.
I emptied the iMovie trash, I ran Onyx to clean the computer, I ran the Activity Monitor on this Movie and a few others that work perfectly (this is the only one I'm having the audio stutter on).
Obviously I do not understand The Activity Monitor:
Movie with stuttering audio = (31 minutes - 7 GB), many transitions, photos and audio pieces (audio on both tracks) (all worked great for a while).
CPU= 16% at idle AND 165% running (how do you use 165% of the CPU???
REAL MEMORY= 185 MB at idle AND 187 MB running
VIRTUAL MEMORY= 514 MB AT IDLE AND 598-854 MB RUNNING
These next Activity Monitor stats are from a very comparable iMovie that works perfectly.
Movie with great audio = (33 minutes - 6.7 GB)
CPU= 16% at idle AND 115% running (again how do I use 115% of CPU??)
REAL MEMORY- 176 MB at idle AND 197 MB running
Virtual Memory= 504 MB at idle AND 540 MB running
OS 10.4.10 - Dual 1.42 GHZ - 1 GB DDR SDRAM - IMovie HD
I sure hope you can help - I have many, many, many hours into this project that I want to show at my 50th High School Reunion.
Thanks
Wally

First, you are probably not doing anything wrong, nor is your computer malfunctioning.
This is a well-known problem, usually having to do with the type and amount of audio that you are adding. Karl Petersen has taken the time to offer a variety of work-around options.
See this very long thread for more information to assist you. Read and heed anything Karl has posted:
http://discussions.apple.com/thread.jspa?threadID=534252&start=0&tstart=0
If you are nearly finished with the editing except for adding audio, and if you have the drive space, you can 'share' the movie as QuickTime, Full Quality. After the quicktime movie has been created, open a new iMovie project and import that quicktime movie into it. You can then add audio and you should not have much stuttering. The movie will be all one long clip incorporating all the tracks from your original movie. You CAN do more editing, but it is a bit more complicated.
Also, for me, even if my movies have audio skipping/stuttering, and even video stuttering, the resultant burned DVD has always come out fine.
You can also 'share' the movie back to your camcorder and reimport it into a new iMovie project.

How can I make Apple Earphones be the Input and Output for Audio

I have some older headphones and they aren't compatible with a Mid 2010 (Intel Core i3) 21.5 Inch iMac
Is there some way to make Apple Earphones be the Input and Output for Audio in the iMac
This is a problem for me personally as when I am talking to someone on Skype the iMac picks up the In-built Microphone audio, and yes the headphones I'm using do work straight from the iMac as audio output
Any help is appreciated

you can connect the headset to something like this
http://www.ebay.com/itm/NEW-MaelineA-3-5mm-Female-to-2-Male-Gold-Plated-Headphon e-Mic-Audio-Y-Splitter-/381100440348
and then connect the mic to the input and the headset to the headset port

With 10.2 I can only use system speaker output for audio, NOT my RME FF400 I used previously. The FF400 works fine with other apps. How can I set this device in FCP 10.2? (it is set in both system preferences and midi)

With 10.2 I can only use a system (e.g. speaker) output for audio, NOT my RME FF400 I used without any problems previously. The FF400 works fine with other apps (some like TwistedWave) setup in the program, and others (like Spotify) using system preferences & audio midi setup. How can I set the FF400 to be the sound output device in FCP 10.2? N.B. The FF400 is set as sound output device in both system preferences and audio midi setup.

From the fcp.co forum. See if this does anything for you.
simon_hutchings
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Junior Boarder
Posts: 24
Thank you received: 5
Karma: 1
I have the solution! Well it at least worked for me. This is the response I got from Apple, Can you please try the following steps towards fixing your audio issue, and report back with your results?
1. Open the application Audio Midi Setup (located in Applications : Utilities)
2. Select the Output Tab for the current output device
3. Select the Configure Speakers option
4. Select the Multichannel tab
5. Change the setting to Stereo Now mine was set to stereo but the left channel wasn't showing left. re-clicking on stereo reloaded the settings and after clicking apply it worked.

Quicktime Restarts Computer, Has NO Audio

Quicktime Restarts Computer, Has NO Audio
Quicktime 7.7.2 Restarts Computer.
Summary:
1.     Change the setting so the Computer does NOT Restart on Error.
2.     Update the Video Driver.
See article on how to change the setting so the computer will NOT Restart on Error: https://discussions.apple.com/thread/743448?start=0&tstart=0
•     Changed the Setting so the Computer will NOT Restart on Error.
•     Updated ATI Video Driver from the Internet ( Computer > Properties > … > Device Manager, right Click on Video Driver and click Update Driver.
Now Quicktime did NOT Crash but still had NO Audio (See below).
Quicktime 7.7.2 has NO Audio.
Summary:
1.     Install an older version of Quicktime (Ex. 7.6.5)
•     I Updated the SoundBlaster Audigy Driver from the Internet (Still NO Audio when running Quicktime).
•     Now that the Drivers were Updated, I Uninstalled and then re-installed Quicktime to see if it would make a difference (Still NO Audio when running Quicktime).
•     Trying something else - I installed an older Version of Quicktime ( I used 7.6.5).
Now Audio worked when using Quicktime.
Computer Specs:
•     AMD 3000+
•     3GB RAM.
•     Windows XP Service Pack 3.
•     ATI Video Card.
•     SoundBlaster Audigy Sound Card.
Extra Notes: Even with my Windows 7 Computer - I only have 7.6.7 - it also works correctly - with audio.

Qualcomm Pure Voice is still an export option in version 7.3 (as it has been in every version).
It fails to play in 7.3 as others have noticed. I didn't catch it in my beta tests of this version and expect it to be fixed with an updated version.
I just tested exports using that codec and they do play the audio. Only a few Pure Voice audio tracks I have on my machine fail. All use 22.050 Hz at mono settings.
A bug.

Quicktime not play video only Audio with Lion

I am trying to watch avi file through Quicktime the I only get audio and no video after Lion installed.
I downloaded Perian again
Whats the problem?

There seems to be an issue with the version of Quicktime X (10.1) in Lion and Perian version 1.2.3.
The are several options in terms of other media players (VLC, MPlayerX, RealPlayer [ugh…], and others…) that will handle FLV files with ease. Alternatively, you could run your video files through an encoder (HandBrake, MPEG Streamclip, SmartConverter, etc.) converting the files into something QuickTime naturally understands like an MP4 or MOV.
But, you were probably happy when everything just worked with the QuickTime / Perian dynamic duo and just want it the way it was. It seems the best way to make this happen, is to go back to using Perian 1.2.2, for the moment anyway. Seems to do the trick for anyone with this problem, so…
1. Remove Perian 1.2.3 from the system.
Quit all your apps, expecially QuickTime. Open System Preferences and click on Perian. You're looking for the "Remove Perian" button; just click and if it asks, type your password. Next, back to the main System Preferences screen where you right-click(or control-click) on the Perian icon. A menu pops up with the choice to remove the Preference Pane. Click on it and Perian is officially uninstalled.
2. Restart the computer
Probably overkill, but better than having to repeat the process because you didn't.
3. Download and install Perian 1.2.2
Get it here: http://perian.cachefly.net/Perian_1.2.2.dmg , or here:http://www.videohelp.com/download/Perian_1.2.2.dmg
Once its downloaded mount the disk image, but proceed with care. Perian will likley try to upgrade itself right after you install it. Best thing to do: disconnect from the net for the install process. Then as usual double-click the "Perian.prefpane" file, choose who you'd like to install it for, and enter your password as needed. Finally, right before reconnecting your machine to the world, uncheck the "Automatically Update" box in the Perian preferences.
Try testing one of the FLVs in QuickTime or QuickLook and with a bit of luck, radio becomes TV.
Oh… and on the off chance it doesn't work and you want to watch some FLVs? Use VLC (http://www.videolan.org), or convert them with HandBrake (http://handbrake.fr).
Good luck!
Sources:
http://www.videohelp.com/tools/Perian/old-versions#download
http://forums.cocoaforge.com/viewtopic.php?f=25&t=23541&start=20
http://fairerplatform.com/2011/04/vlc-player-1-1-9-perian-1-2-2-updates-ship/

RE: Macbook Stuttering, Audio Distortion

FYI
As discussed in Macbook Stuttering, Audio Distortion,
The solution to this problem is as follows:
The fix is to blow out nearly four years of dust (in my case), using the instructions given here (for replacing a fan...)
http://www.ifixit.com/Guide/Repair/Installing-MacBook-Core-2-Duo-Fan/522/1
You don't need to remove the fan, but go as far as removing the keyboard, and then you can simply use an air-duster to remove every bit of dust you can find.
If your macbook's heatsink (as in my case) was cleaned by a professional in Apple Store, and you still keep having problems with youtube, ichat, skype and have stuttering, audio and video distortion and your 2+ghz intel macbook behaves as if it's an early iMac G3 - you have to do all steps described at ifixit.com.
When I have taken out my macbook's fan (the heatsink was perfectly sterile) I have found a 5mm thick layer of compressed dust blocking 97% of the air exit.
Removing the blockage has helped and my macbook is operating like it's new.
PS: It's sad that people at Apple Store do not do their job properly.

Your processor is momentarily saturated. It's not really a 'defect' that is covered under warranty.
Flash is a widely-known resource hog. It's one of the reasons that Steve Jobs has 'banished' Flash from iPhones and the new iPad, and uses H.264 format video.
Have you also noticed that the fan becomes loud when this is happening? Almost any time the fan starts running at high speed, it's because your processor is working hard and needs additional cooling.
If you look at Activity Monitor when the stuttering occurs, you probably have a combined CPU utilization of the top two or three processes running of more than 100%.
It's also quite possible that the Free memory 'green slice' of the of the System Memory pie chart is quite tiny.
Work-Arounds
1. Run fewer processes/programs. Close and Quit every application that doesn't need to be running while you're watching Flash.
2. Try another browser. Some are better than others at running Flash. I use Safari primarily, but Firefox, Google Chrome, and Opera are also available.
3. Add RAM memory, especially if you still have just 1Gb RAM memory installed. Upgrading to 2Gb or 4Gb (MacBook 2,1 actually only recognizes and utilizes up to 3Gb) will help somewhat. It doesn't cure the processor saturation, but it does give the programs running more 'breathing room' until it reaches the saturation point.
4. ClickToFlash gives you options for how Flash is handled. Free download here --> http://rentzsch.github.com/clicktoflash/
5. H.264 format videos may be less processor intensive.
6. Buy a new Mac with a faster processor and more RAM. Even a 2.26Ghz MacBook Pro does much better than the 2007 2.16, because it uses a low power microprocessor, has 2Gb RAM standard, has a more advanced video chipset, and an unibody aluminum case to help dissipate heat.

Can MacBook Pro output digital audio via usb?

I'd like to output digital audio via usb. Can it be done from iTunes? This would allow me to go directly to my dac and then to my preamp.
Thanks.

Russell, there are quite a variety of devices that accept digital audio over USB from any mac with a USB port - see http://www.trendsaudio.com/EN/Product/USBAudiodesc.htm for one example.
Try a google on MAC USB Audio OUTPUT any you should pop up some useful options.
Cheers
Rod
Message was edited by: Rod Hagen

HT3775 How do I get QuickTime Player to read ogg audio files?

How do I get QuickTime Player to read ogg audio files?

For Quicktime player to play it, it needs to be converted
to one of the formats listed here:
http://support.apple.com/kb/HT3775
Otherwise, you will need to use different player software.

Quicktime on Mavericks outputs stuttering audio.

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