No audio playback in Quicktime

I'm unable to get audio happening in Quicktime across various formats (.mpeg, .dv, .flv i've noticed so far). That said, if I open up my .dv files in iMovie the sound is right there, and in Safari i'm experiencing no problems with any format at all.
Phone support has recommended I download an QT mpeg2 codec for $20, but still leaves me with a Quicktime unable to play .dv and .flv sounds... .dv is probably my most used format since I've started putting together videos in iMovie, but I also use mpeg quite a bit to export things to Youtube, and .flv for webpages. I've tried logging in under a different user account also, but the problem still exists.
Any suggestions?

Visual Hub looks like a very, very good option - after reading the article I'm understand QT's position in the media player world a bit better, I thought it was an all-in-one solution to media handling, but obviously not.
One question I do have - is Visual Hub a stand alone media player (I can't find any screen shots to suggest it is), or is it an editor with a bunch of codecs that expand the capabilities of QT?
As far as operating versions go - I have software update turned off, as some software I use is only qualified to work with certain versions of OS X, that said I have updated QT & iMovie to the following versions:
- iMovie HD 6.0.3 (267.2)
- QT 7.4.0 (92), QT Kit 7.4 (92)

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Problems with audio playback in QuickTime movs on site

I'm working with some clients, and posting QuickTime movs for review on my site. Everything was fine until this last pass, when suddenly, half the people said they could see the video, but not hear the audio. I'm posting H.264 video with AAC audio. Even more unusual is that the people with the more recent machines and software were the ones having trouble. The older cpus and software seem to playback the movs just fine.
And it seems to be affecting Windows and Mac users equally.
Any suggestions?

I'm working with some clients, and posting QuickTime movs for review on my site. Everything was fine until this last pass, when suddenly, half the people said they could see the video, but not hear the audio. I'm posting H.264 video with AAC audio. Even more unusual is that the people with the more recent machines and software were the ones having trouble. The older cpus and software seem to playback the movs just fine.
And it seems to be affecting Windows and Mac users equally.
Any suggestions?

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I was informed by my Soundcard manufacturer that Quicktime7 now requires a "real" WDM driver.
Many soundcards seems to have a "fake" WDM driver and this leads to chopped up sound that is completely distorted / garbled and impossible to listen to.
The fix is to downgrade to an older version of quicktime and iTunes.
I'm posting this because it was driving me crazy that there is no information on this in the support pages from Apple even if there are plenty of reported issues with audio playback. The system requirements from Apple does not mention the WDM driver either. I am not sure if this "true" WDM driver has to be "windows signed" and all unsigned drivers are "fake".
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Regards
Lars T
Dell P-390 Windows XP Pro core2duo, 2gb ram

By way of experiment, try updating your QuickTime Player to the most recent version.
Does that help with the iTunes problem?

Windows 7 (64bit) itunes choppy stuttering audio playback

Hi All,
I'm new to these forums so apologise in advance if this topic has been covered already....
I recently upgraded my Dell to Windows 7 64 bit and also upgraded iTunes/ QuickTime to the 64 bit version which resulted in audio playback in iTunes stuttering every few seconds. I waited for the latest release thinking it must be a bug which apple are addressing. Just installed it (ver. 10.1.056) but the problems is still there. I’ve tweaked quick time, installed the newest possible audio drivers, for my soundcard nothing makes any difference. If i use windows media player to play my music its absolutely fine , no stuttering , no problems at all. So why can't apple get their act together?
Has anyone else experienced this problem or found a fix? if so please get in touch.
Thanks for reading
Dave

I have a similar problem. I recently got a new laptop with Windows 7 64-Bit. I've started to rebuild my iTunes library and it was all going well. However, I noticed a lot of my files are starting to loop the first second or so of the intro for around 6 seconds before the song plays normally. At the time, I didn't think of this as a problem, but the exact same looping occurs on the iPod itself on the same files, at the same time, everytime.
After deleting the broken files and getting new versions of the same songs, I decided to test them in Windows Media Player first and there was no intro looping. Assuming all was well, I added these files to iTunes, tidied up the song info, added album art and then played the tracks to see if the looping was still gone. Some of the tracks were fine, but others had developed the intro looping. Playing these same files in Windows Media Player again, after running them throgh iTunes, also now has the looping which it previously did not.
iTunes seems to be destroying my files. Is there any way to fix this?
Message was edited by: Walleye87

Multiple audio playback devices

I have just built a system using the K7N2-L mainboard and am having a problem with multiple audio playback devices.
Actually I have TWO problems, which are probably unrelated.
I have a 5.1 speaker system connected to the onboard audio and an external USB DAC for playback through a hi-fi system.
The first problem is that the USB audio device is only recognised if it's plugged in after the system is booted. If it's already attached when I power up, it appears not to be properly installed.
The second problem is that when I use the Sounds and Multimedia control panel to switch audio devices (Windows 2000 pro) playback continues through whichever device was used first. In order to switch, I have to reboot the computer.
Another system I built using an Epox nforce board does not have this second problem, although it does have the first. With the Epox board, I can even play through both devices simultaneously.

I gathered this from the handbrake side of things:
You can also combine Pro Logic II and AC3 pass-through. This will give you a file that will play anywhere from QuickTime to VLC to the iPhone (using the AAC Pro Logic II track) and play in true surround sound on an AppleTV or in Perian. It is the best of both worlds, and it is only possible in the .mp4 and .mkv containers. Again, MP4 file names must, confusingly, end in .m4v for QuickTimeto read them. To use this hybrid format, in the Audio tab, set the first audio track to be the track you want, in AAC sound. Then set the second track to also use the same source track, and select AC3 pass-through."
I think this is what will ultimately help me. I will let you know.
the answer was righ under my nose.
Thank you!

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Any ideas on how to fix this?

I am having a similar problem - I get audio from iTunes, but not from QuickTime or RealPlayer? YouTube plays audio just fine.
My OS is at 10.4.8 to stay within the Pro Tools supported realm.
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What could this be?

No Audio Playback in FCE4

Hi everyone,
Strangely, I can't get the audio playback to work in Final Cut Express 4. I checked other threads in this forum and already tried a few things, but no help.
Here's what I have so far:
- Audio scrubbing works. (I can hear sound when scrubbing through my video.)
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Thanks for your reply!
All of the videos I tried is using the AAC codec for the audio. Some were converted from FLV files using QuickTime, some were recorded using Photo Booth. There were also AVI files recorded using a Canon PowerShot A720 IS and some MOV files recorded with a Canon PowerShot G10. I think the AVI files are multiplexed, and I tried to demux them and convert them into MPEG4 video and AAC audio using MPEG Streamclip. No matter what I've tried, nothing worked yet.

Audio playback frequencies are distorted...

All of a sudden, audio playback through my speakers/headphone jack is muddy and distorted. Sometimes, the vocal track disappears completely. This is not just in iTunes (where I've unsuccessfully tried to adjust the equalizer), it's also on Youtube videos. Sonos, which does NOT go thru system audio, sounds fine. I'm including etrecheck diagnostics. Thanks for any ideas. Oh, and the only thing that's changed, systemwise, is the latest Yosemite upgrade. The problem started after that, but not immediately after.
Problem description:
Audio playback is distorted
EtreCheck version: 2.1.8 (121)
Report generated April 16, 2015 at 11:20:10 PM CDT
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, 13-inch, Late 2013) (Technical Specifications)
    MacBook Pro - model: MacBookPro11,1
    1 2.4 GHz Intel Core i5 CPU: 2-core
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        BANK 0/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
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    Wireless: en0: 802.11 a/b/g/n/ac
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Video Information: ℹ️
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System Software: ℹ️
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        Macintosh HD (disk0s2) / : 150.14 GB (103.49 GB free)
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USB Information: ℹ️
    Apple Internal Memory Card Reader
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    Seagate USB Mass Storage 100.03 GB
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Thunderbolt Information: ℹ️
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    Mac App Store and identified developers
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        /System/Library/Extensions
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Launch Agents: ℹ️
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    [loaded]    org.gpgtools.Libmacgpg.xpc.plist [Click for support]
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        Total number of backups: 55
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         4%    WindowServer
         1%    fontd
         0%    Fitbit Connect Menubar Helper
         0%    Dropbox
         0%    AppleSpell
Top Processes by Memory: ℹ️
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    86 MB    mds_stores
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    5.01 GB    Active RAM
    571 MB    Inactive RAM
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    1.63 GB    Page-ins
    0 B    Page-outs
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Will try. There are no cables/exterior connections involved here.
Oddly enough, this worked. I was unable to hear anything in Safe Mode, so just exited and rebooted (yes, I'd already tried rebooting, with no effect). Gave iTunes a shot, and am now back to normal.
Whatever works!
Thank you.
bkb

No Audio Playback due to Error Message "Disk is too slow. (Prepare) (-10001)"

Out of the blue, no audio playback. Was working just fine earlier today.
I repeatedly get the error message:
Disk is too slow. (Prepare)
(-10001)
NOTE: I have more than enough disc space. That is NOT the issue.
I also just got a second error message:
Part of the Project was not played
This project has too many real instrument tracks to be played in real-time. To optimize performance, see the 'Optimizing GarageBand performance' page in GarageBand Help.
NOTE: Odd as I have only 2 tracks in the GarageBand file.
Any others experience this? Suggestions?

Have a look into the Preferences folder (YourUserFolder/Libraries/Preferences/) and trash all Logic preferences.
You'll have to setup the program again.
cheers
rob

Premiere Elements 12 - Gaps in audio playback

Hello everyone!
I have a problem with Adobe Premiere Elements 12: when I play video in timeline or preview window, there are lots of gaps and pauses in audio playback, even though video is playing smoothly. Usually the pattern goes like this: 2 seconds of clean audio - 0,5 seconds silence - 2 seconds of clean audio... etc.
I have tried the following:
- change audio buffer settings
- change audio device (I have tested with integrated audio chip ("High Definition Audio"), M-Audio Fast Track Pro and cheap USB audio interface - same results with all of them)
- start a new project with correct settings and import only one file
- disable background antivirus monitoring
Usually source material is AVCHD 1440x1080 25fps (PAL, MTS-file) from small Sony camera, but this problem seems to continue even if I insert only still photo and mp3 audio to timeline. CPU load is about 6% during playback. It seems like Premiere Elements makes these gaps to playback signal before sending it to audio hardware?
Computer specs: Intel Core i7-4770 @ 3,4GHz, 16 GB RAM, 128GB SSD drive for OS & software and 2.0TB 7200 rpm drive for video, Intel HD Graphics 4600, Windows 8 (64bit).
I would be really grateful if someone could give me some tips to solve this annoying audio playback problem.
EDIT: I forgot to mention that this problem occurs all the time - even when video is rendered in timeline.

Thanks for the quick response, TonyPh12345. Clearly not what I was hoping for but not unexpected. BB

Performance hit in audio playback in Solaris 10

Hi,
I've noticed while trying out the Solaris 10 beta 72 that the audio playback quality took a major hit since Solaris 9. I was hoping that this would go away in the Solaris 10 release, but it's not the case.
If I try to play an .mp3 file with mpg123 or even audioplay an .au file, there are regular clicks in the playback, audible about twice per second. Booting into Solaris 9, the audio playback is perfect.
My intuition tells me that the integration of DTrace into the kernel is the culprit, but of course, I have no proof. Can anyone think of a way to test this theory? Can DTrace be disabled? Maybe DTrace can be used to figure out what's going on?
martin-dot-przyjazny-at-eds-dot-com

Hi,
I've noticed while trying out the Solaris 10 beta 72
that the audio playback quality took a major hit
since Solaris 9. I was hoping that this would go
away in the Solaris 10 release, but it's not the
case.
If I try to play an .mp3 file with mpg123 or even
audioplay an .au file, there are regular clicks in
the playback, audible about twice per second.
Booting into Solaris 9, the audio playback is
s perfect.
My intuition tells me that the integration of DTrace
into the kernel is the culprit, but of course, I have
no proof. Can anyone think of a way to test this
theory?You can be assured that DTrace is not the culprit. When DTrace is not running ("pgrep dtrace" to be sure), there is no effect on system performance.
Maybe DTrace can be
used to figure out what's going on?DTrace could certainly be used, but some basic facts would be helpful. As Juergen asked, which audio driver is this and on what machine? And how idle is the machine when audio playback is running? Is the machine power managed?
- Bryan
Bryan Cantrill, Solaris Kernel Development. http://blogs.sun.com/bmc

IPhone 4 audio playback cuts out after latest update (5.1)

My phones audio playback ( podcast, audiobook or music) cuts out at random intervals during playback.
This happens when listening through apple headPhones or my audio lead aux input to my stereo.
This has only started since the last software update (5.1). It's really frustrating as you often hit the jump back or forward arrows when restarting, instead of the intended Play symbol ( they are close together). This is really frustrating when your listing to an hour+ podcast.
Is anyone else having this problem since the update?

Same problem here! My phone was functioning correctly after the update until today, when it randomly attempted it's own emergency call, then requested that I turn on location services. When I hit cancel, it repeatedly requested that I turn on the service. When I agreed to turn on location services, it defaulted to the screen with the iTunes logo and the USB cable. Since then, I have been unable to get it to function. The phone has been switching between a black screen and the apple screen and buzzing periodically. When I touched the apple, it pixellated and melted away. I did see a message that the iPhone needed to be activated once and very briefly. I managed to connect it to iTunes using an old troubleshooting guide, but when I asked iTunes to restore it to factory settings (politely, thank you), it gave me error 21 (unknown error) and said it was unable to restore.
Hopefully someone has an answer...?

FLICKERING PLAYBACK IN QUICKTIME OR iDVD w/ Ken Burns toggled "ON"

FLICKERING in SLIDESHOW PLAYBACK IN QUICKTIME OR iDVD w/ Ken Burns toggled "ON"
Posted INCORRECTLY EARLIER IN iPhoto 6 Forum: Apr 17, 2009 12:27 PM
Hello everyone, and especially QuickTimeKirk if I can get his attention please--->
After pressing "Play" in iPhoto and with Ken Burns "Auto" toggled ON the PLAYBACK VIEWING photos in iPhoto is OKAY.
After clicking on "Slideshow" and choosing same options, ie., with Auto Ken Burns "ON", VIEWING of Slideshow in iPhoto is OKAY.
Now happy with slideshow, I click on Export (goes into processing with QuickTime, or some elements of it I presume),
NOW SUDDENLY the VIEWING IS JUMPY, SOMETIMES LOCKS UP--totally unacceptable.
Yet if "Auto Ken Burns" is toggled OFF in iPhoto slideshow settings, leaving a flat & still picture and then Exporting File (goes into processing QuickTime) then PLAYBACK VIEW in QuickTime and iDVD IS OKAY.
So, how do I get to use Auto Ken Burns Effect AND without JUMPY/FLICKER/LOCKUPS in my slideshows this year? (A year or more ago everything worked out just fine using the same methods as today).
I sure would appreciate your help so I can send out some iDVD's with my Slideshows with the K-B effect "On."
Please help if you can,
THanks,
Max

Mr. "K"
Thanks very much for your rapid reply...this thing has had me in knots for days.
I opened MI and watched it as I played
Slideshow-A with Ken Burns ON
versus
Slideshow-B with Ken Burns turned OFF.
S# A was a several hundred MB in size (wow, how'd that happen?) while S# B was less than 100MB.
S# A jumps, stutters, etc. S# B does not.
The FPS of 30 and Playing FPS of 30 can be seen in a third (Slideshow#C) video that has KB toggled on and that one doesn't seem to stutter nearly so much. It's size is 70MB.
I checked my Codec Pkg using Get Info and found it is Ver. 1.1
My G4 is rated at 800MHz
and has plenty of RAM (if that's where this stuff is cached for playback).
Not sufficient? Please let me know how and if I can rectify that?
Watching with MI engaged is one thing, but What can I do about this disappointing outcome in iDVD or QuickTime playback?
Earlier (2yrs ago) I could create a Slideshow, toggle on Ken Burns, watch a video with no probs.
If you'd be so kind, please offer your best strategies.
THANKS,
Max

AIR + Android audio playback in background

Hello everbody,
at the moment I am evaluating the realisation auf a radioplayer using a rtmp stream for android devices.
There are two question for which I could not find any advices or resoltions.
My questions are:
1.) Is it possible to play/continue an audiostream, even if the app itself is pushed into background?
2.) How are updates handled for apps in Android-Store? Is it the same as with the updateroutine for AIR on Desktops?
Thanks in advance for your answers.
Regards,
wman

Hi Varun,
thanks for your answers.
Are there any ressources/links, maybe on adobe devnet, available for audio playback while app is in background?
I already searched the web so far, but could not find any hints.
but anyway thanks for your response!
Regards,
wman

I have created a PDF with mp3 audio clips, the file works on PC's with audio playback (WIndows 7, 8 ) however the audio does not play when hosted on a website or an ipad/tablet computer or smart phone when used with PDF reader

I have created a PDF with mp3 audio clips, the file works on PC's with audio playback (WIndows 7, 8 ) however the audio does not play when hosted on a website or an ipad/tablet computer or smart phone when used with PDF reader

adobe42135678 wrote:
the audio does not play when hosted on a website...
When viewing in what browser?

No audio playback in Quicktime

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