Movie audio stuttering

Since ITUNES last software update, Quicktime Movies (taken from my didital camera) which I convert to play on my ipod, play with the audio "stuttering". It is not an ipod problem, since the converted file stutters even when I play it back on my PC. I have some Quicktime files which I had conerted BEFORE the last update, and, they still play OK. However, If I convert them again with the latest software, the resulting file will stutter on playback.
I do see that the older converted files have a "BIT RATE" of 128 kbps while the most recently convert files have a bit rate of 94 kbps. This may be the problem....does anyone know how to set the bite rate for file conversion in Quick Time??

It is my experience that the DVD will also have the audio stuttering. I've had several projects with the same issue. It's frustrating. There is a thread that addresses the audio stutterning problem. I was not able to work around the problem on a video that I created. I will enclose the link:
http://discussions.apple.com/thread.jspa?messageID=2600193#2600193

Similar Messages

Quicktime movie audio stutters and freezes viewer and browser

I uploaded a Quicktime movie to my website and it plays fine on all of my computers except one - the one that I do my website on. All Quicktime movies hang with rapidly looping audio on this machine - even the ones on Apple's website. This lasts for a minute or two and hangs the programs until it stops. Other video and audio formats work fine on this machine. Help!
pentium 4 Windows XP Pro
pentium 4 Windows XP Pro

Hard to believe there are no takers.
Hardly surprising. You didn't really ask a question to which readers could respond nor do you seem to be looking for a workaround for your unexplained and rather circuitous workflow. I did attempt to duplicate the download/conversion process using my own system, software, and workflows but since you did not include any particular YouTube source file (i.e., URL) reference and my results were different than yours, I can't even be sure I started with the same content as you. Basically, such sync problems normally devolve from a problem in the source file or in the processes used to download and/or convert the content.
A YouTube search for the file name referenced in your initial comments directed me to this YouTube page which I used as a source file: http://www.youtube.com/watch?v=d_INlMhECFA
However, when I downloaded the 426x240 version of the YouTube source file, it turned out to be a standard H.263/MP3 FLV file with stats quite different than those of your H.264/AAC MP4 download posted above and which did not display any AV sync issues. (Source File)
I then used QT 7 Pro (with Perian codec package installed) to directly convert the H.263/MP3 FLV compressed data to an H.264/AAC MP4 file having the same target settings as the original FLV file. (Converted File)
In short, based on the information provided, I cannot duplicate your problems. In addition, the downloaded 720p30 resolution H.264/AAC MP4 version of the same content also played correctly in the QT 7 player without conversion or additional third-party codecs. At this point (i.e., without further information to the contrary), I suspect your issues may be self inflicted as a result of your workflow and may explain why others have failed to make comments here.

Video/audio Stuttering on Macbook 13

Hi All
I have a mid 2007 Macbook 13 running OS X Lion 10.7.4. all up to date. Initially I had 4G's of ram ( I know it only reads 3 ) now I have it running on only 2.
Problem is video/audio stuttering when running movies. mostly netflix and or connected to a flat screen tv. on wireless or wired connection. but it also happens just running youtube videos or videos that I have on the system mostly in .AVI format. I could be running movies with VLC or quicktime and same ting. I've tried turning every running program off. like firewall, little snitch, sophos AV, etc. after turning them all off I do a restart. I have done permssion repair, checked the disk, run the daily scripts, even downgraded to SL to see if Lion was too much for the system and nothing. of of the 4G's of ram that I have. I swapped them to see if maybe one or 2 of them ware bad. when I install the operating system, I do a clean install. delete partition, format, the whole thing and bring it up to date. not all at one time. disk permissions repaired after each big updated. almost half the time the videos will run ok and than it starts stuttering. when is doing it. not even the mouse responds in those few seconds. is like something is grabbing all the system memory for a few seconds at a time. it has gotten to the point that the system completly frezzes and I get that black translusent window that says the system needs to be restarted.
I have about 40% free HD space.
Any ideas ?
Thanks

Welcome to Apple Support Communities.
The behavior you mention is typical of MacBooks with the GMA 950 video chipset and 64MB VRAM.
The best solution I've found is to quickly pause the video and let the video load completely before watching, IF the website allows it and will preload the content. Not all of them do. Some sites automatically buffer before they begin playing.
Watch in a window rather than full-screen.
Watch content on your MacBook screen rather than a HDTV.
The Safari Extension "ClickToFlash" lets you choose whether to load Flash content at all. It also allows 'preferring' H264/HTML5 web video content when available, and seems to be a bit better than simply defaulting to Flash content for every website.
I have a mid-2007 MacBook 2,1 with 4/3GB RAM. It is the very oldest model capable of supporting Lion. After reading of performance issues with these older systems in these forums, I chose to remain on Snow Leopard rather than upgrading to Lion. Snow Leopard runs most things I do very well in 3GB. Lion really seems to need 4GB and would like 8GB, from what I read here.
You don't mention how fast your internet connection is. A faster internet connection MIGHT help some. A wired Ethernet connection MIGHT offer a bit more throughput than WiFi. Worth trying out, especially if you have a friend with a faster connection where you can try before you pay to upgrade.
Ultimately we're talking about 5-year-old computers. That's "ancient" in computer life cycles, and the best solution (not most cost-effective) is a new(er) Mac. It's not a problem unique to Mac. Old Windows XP systems lack the performance of new hardware running 64-bit Windows 7.
New or recent Refurbs with 4GB or more RAM, faster video chipset, more VRAM, faster clock-speed, Intel "Sandy Bridge" (or "Ivy Bridge" likely coming soon) dual-core or quad-core processor, and, yes, a hefty pricetag to match. Anything else is at best a temporary measure to buy a bit of time (a year, maybe?) until you can purchase a new(er) faster better Mac.
Message was edited by: kostby

Audio stutters with WRT54G v7.00.1

Hi all,
Last week I installed the Linksys WRT54G V.7 router. Since then, my audio stutters every 30 sec/minute . Music and movies just freeze for a second, than continue, 'till it happens again. When I disconnect from the router, everything works fine.
My router is also connected to a Xbox 360 (wired) and a Nintendo Wii (wireless, wifi). I've checked the security settings with the router's webutility, I use WPA2 AES, Beacon Interval: 50, Fragmentation Threshold: 2306, RTS Threshold: 2307.
I've tried for days, but nothing works. I have a Sound Blaster Live Value soundcard. Could anyone PLEASE help me?? I'm getting really annoyed. Thanks in advance.
Greetings,
Pater

Oh really? I forgot to mention. The computer having the audio problem has a wired connection with the router. Could it be affected by the wireless antenna's?
But I could try it. Won't this have a negative effect on my wireless connections (Nintendo Wii, Notebook)? Does it matter wether it's the left or right antenna?
I'm not at home at the moment, but tomorrow night I'll try your suggestion. I'll let you know, ok?
Thanks in advance.
Message Edited by Pater on 01-27-200702:13 AM

Audio stuttering problems with certain exported MP4 files

I'm currently running Captivate 6.1.0.319 on my old and decrepit Pentium 4 machine that has 4GB of RAM and is running Windows 7 SP1. I'm developing an online training course on RoboHelp 10 for Udemy, and they require all lecture files to be in MP4 format. Unfortunately, some of the MP4 files I generate from Captivate have audio stuttering starting a few seconds into the generated video and nothing I try fixes the problem.
All the videos are being recorded with video dimensions of 1360 x 978 pixels. I import the .cptc file I recorded into the .cptx file, and then I import an MP4 audio file into the .cptx file. When I finish editing the .cptx file, I publish it to an MP4 file using the highest video settings and the highest variable bitrate audio settings.
I have tried the following to try to fix the problem:
Turned off SWF compression.
Created a new .cptx file and copied the slide from the problem .cptx file into the new one, and published that new .cptx file.
Disabled all software operating in the foreground and the background.
Tried generating the MP4 file on my laptop; the laptop runs the same version of Captivate on Windows 8.
As I said, Captivate generates some MP4 files perfectly without any stuttering, and others have the stuttering problem. If this problem sounds familiar, it's because I wrote a couple of messages about this a few months ago and despite some good suggestions, I wasn't able to solve the problem. I've spent my time during the past few months trying to find another program that will convert SWF files to one of the formats Udemy supports -- MP4, MOV, or FLV -- without success. Captivate exports to SWF and HTML5 format files without any trouble at all. But MP4 generation is spotty and I need to get this resolved so I can get this project off my plate and start making money off it.
If you have any further questions, please let me know. I look forward to hearing your suggestions.
Thanks,
Eric Butow

Hi,
I am having the same issue and cannot figure out what is causing it, as it occurs randomly - but fairly frequently - when I publish to mp4. And it is not tied to the project - seems to be something happening during the publishing. The issue might occur one time when pubishing a project and if republished again it may or may not occur again. I would be very interested in finding exactly what is causing this and any step that are tested and proven for getting away from the problem.

Can no longer select or move audio clips on Narration track - what happened??

I began my first Adobe Premiere Elements 11 project this morning, a short video (5 mins) I intend to upload to YouTube. It's a comedy sketch involving inanimate objects that "talk", so it requires a lot of dialogue to be added to, in this case, the Narration track.
I am not new to Premiere Elements. In fact, I've done quite a bit of fairly complex editing on previous versions of the software (I upgraded to 11.0 from 8.0). I've never had this problem before.
After editing this project for well over 2 hours with no problem, I can suddently no longer move or even select any audio clip on my Narration track. They are just frozen and stuck there. Everything else works normally. I can select and move all other clips on all other tracks. Further, all audio clips will play, even the ones on the Narration track. However, I can no longer move, select, or even add any clip to the Narration track.
I opened a new project to see if the problem persisted, but it didn't - I could add, select, move audio clips on the Narration track just fine.
I'm stuck and bewildered. The project I've already invested 2-3 hours into seems permanently broken. The audio clips on my Narration track will play, but I can't select, move, or otherwise do anything to them.
My fear is not just that I'll have to start this project over again, but I'll never know when it will break again, and I'll lose all my work again.
Help!
Seriously, does anyone know what's happened?

sleinbach
Thanks for the details. As I suggested this idea that I had after reading this thread may be just nonesense, but I thought it would be interesting to try.
This is recommended done with a copy of the project that you have now.
For now, let us assume that the missing track names are part of the locked Narration Track syndrome. I am not sure if your narration clip was generated in Premiere Elements narration feature or created elsewhere and brought into the program. That would be interesting information to have. But, nonetheless, moving forward with this idea.
Given you cannot move, delete, change, etc what is on this Narration Track. Whatever is on that Narration Track traces back to an original on the hard drive and probably is shown in Media Cache's (Adobe Folder) as conformed audio cfa and pek set.
a. Find the narration hard drive hard location and move it to a new location (special folder on hard drive). When you go back to the copy of the problem project, you should be greeted with one of those "Where is....?" messages. Cancel out of that. Do not do anything within that message dialog.
b. Right click the thumbnail for your narration in Project Media and select Replace Footage. Then browse to and select the original that you had moved to the computer desktop and the special folder there.. Click OK. That should restore the file (including whatever effects were made to the file) to the project.
c. Has any of that had any effect on unlocking the Narration Track?
Other maneuvers to try
a. Trying to locate and delete any cfa or pek files associated with the problem audio.
b. Switching to an Aero Theme for Windows if you do not have one set so far.
Thanks for giving all of that a look at.
ATR

IDT HD Audio stuttering 3d apps/games/tf2 - Windows 7 x64 - Pavilion dv7-4113tx

As per the rules I need to state:
I am a HP employee, my views/opinions/etc are my own and do not represent those of HP.
This is cross-posted from freezes/lockups.
I would file some sort of bug report - but I wouldn't know where to start, I don't work in an area that has anything to do with manufacturing HP products; and this is my free time now and I don't have intranet access .
I recently picked up a HP Pavilion dv7-4113tx Entertainment Notebook PC [ XV780PA ] for my personal use and overall it's been pretty good. It comes with windows 7 Home Premium x64 bit.
there is however an issue that I must bring up in regard to gaming, or i would assume any intensive 3d application, most notably Valve games, my test of choice is Team Fortress 2.
The game will work fine in native resolution - I get around 100-120fps but about every 30 seconds - 2 minutes, there is a audio/video stutter (by stutter, it will repeat the last .5 seconds of audio about 3-4 times in a loop while the screen will freeze on where the first audio stutter started), which will cause the game to 'freeze' for approximately 2 seconds and then continue where you left off.
Team fortress 2 is an incredibly time critical multiplayer online game, and this delay essentially means my e-death on multiple occasions.
I initially thought it was the graphics card, or the drivers - I upgraded the drivers to the latest on the ATI site, that increased my fps, but the stuttering was still there. After searching around on the internet a bit, i found a suggestion to disable the audio driver (device manager lists it as - IDT High Definition Audio CODEC) as a test - so I did so.
The game purrs like a kitten - absolutely no stuttering. my score went up immediately
So, my next step was to try and get some Updated Drivers for the IDT Audio device (note, i cannot find a model name anywhere in the hp specs - or on the internet really) - I found out IDT themselves cannot release drivers, that these can only be obtained through OEMs.
which brings me to here.
now - the closest I have found to the drivers I required are here: IDT High-Definition (HD) Audio Driver for Microsoft Windows 7
Note: - it says on the page that they are 32 bit drivers - but I've found they work with the 64 bit version of windows.
these worked a little better - it fixed another annoying issue - the fact if you use the volume controls in a fullscreen application that it will switch back to the desktop to display the on screen slider bar of the volume going down (which was arguably redundant as windows 7 displays the speaker volume in the bottom right hand corner) - and it just turns the audio down as intended.
however - the stuttering is still very noticeably present .
I then tried to use the HP Support assistant to run automated diagnostics and troubleshoot... which then downloaded the old drivers that gave me that fullscreen volume control issue back again - so i assume the original drivers.
So I installed the other drivers again.
My next test will be to use an external USB or firewire soundcard to see if this will allow me have games with sound.
Can an appropriate agent at HP please address this concern and notify when this bug will be fixed - IDT says they work with OEM's to fix issues regularly on the IDT link above.
I believe this is such an issue that will likely require a bug fix.

Hi ozDerek,
Thank you for visiting the HP Support Forums. Since this is a duplicate post I'm going to lock this one, please check your other post here for replies:
IDT HD Audio stuttering 3d apps/games/tf2 - Windows 7 x64
Thanks!
Wendy M - HP Support Forums Moderator
Click the Kudos star as a way to say "thank you" for helpful posts.
Be sure to come back and click the 'Accept as Solution' button on the post that solved your issue - it may help someone else.
Rules of Participation

HT5287 If DVD Movies, Audio CD's and even burning CD and DVD's are not supported, what is the point of DVD & CD Sharing then? Wouldn't it just be better to remote in or use a thumb drive if it's only able to be used for data transfer?

If DVD Movies, Audio CD's and even burning CD and DVD's are not supported, what is the point of DVD & CD Sharing then? Wouldn't it just be better to remote in or use a thumb drive if it's only able to be used for data transfer?
Or am I missing the bigger picture?

As long as you have a Superdrive or an external burner/drive, burning, watching, installing, etc. from CD or DVD will work just fine. And so will sharing.

Cannot transfer .mov audio from pages to epub

I am a total newbie at making epubs...
I have dragged a .mov audio file made in quicktime into my pages document. It is inline. The audio file works when I click on it (speaker icon) in the pages document.
After converting to epub, the speaker icon disappears and I have no audio available.
Can anyone help?
Thanks!
I have pages version 4.1

It's interesting that 'they' have decided to NOT let folks on 10.4 produce an ePub (from Pages). I understand that I cannot 'do' the whole ePub consumer side on this machine but I was hoping to get a bit of a headstart while on the road. (The mini at home base is running 10.6 and is my ePub production environment. That version of iWork9 does have the later Pages, which is why I was surprised when I could not find the same UI on my 'travel' machine.)
As to why I don't upgrade the G4? I need one machine that can run Classic. So it will live at 10.4.11 for the rest of its life.
I have my fingers crossed that today's announcement will include a suitable Macbook Air update ... one that is not too wide and/or too high. (The 13" 'books have been too large a footprint to replace my trusty 12" so I've been holding out...)

Trying to import .mov audio file and burn as MP3

Can someone point me to a thread, or be kind enough to post answer, about how I might successfully import a .mov audio file and wind up burning it as an MP3. I've been dinking around with this for too long. I can import it and end up with it in the format: MPEG-1, Layer 3. But when I burn it to CD and play it on a Sony boom box, I hear nothing. I tried playing it in another iMac and hear nothing.
Thanks.

I was hoping someone in this forum could point me in the right direction to a web site that is designed specifically for Garage Band users that need sound effects.
Check out:
http://www.macjams.com/
http://www.thegaragedoor.com/
These both are GarageBand-oriented.
Also, check out:
http://www.loops4free.net/
Maybe you'll find something useful at one of them.

Strange "Audio Stutters" in All Exports

Hello,
What I can only describe as "audio stutters" occur at seemingly random times in my Premiere Pro exports created with Media Encoder. They are very brief but noticeable intrusions that sound like glitches.
All audio sounds perfectly normal in Premiere; there are no problems on the timeline. I have tried the following troubleshooting steps:
Restarting the computer
Restarting the software
Cleaning Premiere's cache through the preferences panel
Changing the Renderer to "Mercury Playback Engine Software Only" in Media Encoder
Unchecking "Enable Parallel Encoding" in Media Encoder
These "stutters" occur in all exports; I have experimented with different projects stored on different drives, as well as with different formats (ie., H264 and Quicktime) and audio codecs (ie., AAC and MPEG).
The only way I have found to create an export WITHOUT "stutters" is by sending a sequence to Audition, creating a mixdown file, importing this file into Premiere, using it to replace the original audio, and then sending this single-audio-track sequence to Media Encoder.
I would love to be able to export from Premiere without having to run my audio through Audition. Any and all leads are welcome!
For your reference, I am running Premiere Pro CC on Windows 8.1, with a 3.60 GHz processor and 16 GB of RAM. I have 11 GB available for Adobe products. For what it's worth, I know for certain that I did not experience this problem prior to the 7.2 updates.
Thanks in advance!

Clearing the Cache is best done outside of PP using Windows Explorer. You can get the location of those files under Edit>Preferences>Media...
(On a side note, this Cache cleaning could use some improvement. Please add your vote. http://forums.adobe.com/thread/1369263?tstart=60)
If that changes nothing, it would be helpful if you could upload a file somewhere for us to hear the issue.

Move audio and video between tracks simultaneously

If I have a video clip on V1, with linked audio on A1, I would like to move them both to V2 and A2, respectively, at the same time. Is this possible? I like to work this way to easily keep track of which video goes with which audio.

There is a practical logic why one moves Audio and Video separately.
Audio does not care what track its on...but video does (layering).
Audio tracks are frequently checkerboarded ( A&B'd) to create overlaps and enable J & L Cuts to Video.
It would be too easy to overwrite audio if it chased video track for track.
You need to use track and source targeting to organise your timeline if thats your requirement.
If the Video and Audio are linked

Can I move audio in logic by the sample in the sample editor to compensate

I wanted a final say on wether or not I can move audio with sample accurate percision by moving the anchor in the sample editor with update in arrange page turned off. i just need a verification of this.
Thanks guys

yes you can and should use the sample editor to make
such compensations. you do this by aligning the
anchor point to the sample or part of the wave form
that you want to correspond to a beat or subdivision
(ideally) though of course it can be any point you
want it to.
if you use 'pickup clock; move object or event to
SPL' KC the anchor point will jump to the SPL.
Philip K is right though; if your entire track is out
by the same amount that you can measure you could use
the sample delay (though of course that will only
delay it not move it forward in time). but you won't
see the waveforms align themselves to the beat
meaning you would have to be aware that that track
has been compensated for.
on balance i would edit with the sample editor.
I was thinking that you could delay the rest
of your tracks by however many samples thus
aligning by compensating everything else though
in real world situations I don't know how practical
this would be. I keep forgetting that you can measure
how many samples you select in the sample editor even
if you cannot see them individually. So I will defer
to the voice of experience on this. If Rohan would use
the Sample editor, then I would tend to agree

Audio stutters in slideshow

Hello All,
I am a newbie with encore, trying to put together a slideshow with audio and subtitles. I used VBR mp3 encoded using iTunes. I rendered this slideshow and checked the preview to find that the audio stutters.
Any idea if encore doesn't like VBR mp3?
BTW, I will be glad if someone could explain what encore did by 'rendering'?
Thanks

In fact, I have most of the collection in VBR mp3 format only but I can still make AIFF files out of the CDs those are with me (and most of the collection is back home with parents)
Is there any way around to work with mp3 files like exporting to wav and using them etc? I am sure there will be a quality loss but is such thing possible?

Windows 8.1 Audio Stuttering

Since upgrading to 8.1 my computer's audio has been stuttering. For instance whenever I play music either on windows media player or on youtube etc, when doing an activity while its playing, the audio stutters.
Heres my specs:
Motherboard: Asus P8Z68-V lx
Processor: Intel(R) Core(TM) i5-3570K CPU @ 3.40 GHz 3.40 GHz
RAM: 4.00 GB
System type: 64-bit Operating System, x64 based processor
If more information is needed I can send the dxdiag file.

Hi,
Faced the same problem on updating my Dell XT2 from windows 7 64 Bit to Windows 8.1. As windows automatically installed its default HD audio drivers, I did not bother to use the actual chipset drivers that came along with the XT2. The audio used to stutter
very badly, especially when on Power Saver mode / Balanced mode and some other process would start. The stuttering reduced when I shifted to the High performance mode, but still took place randomly.
Just went to the dell site, downloaded the IDT drivers (A16) for windows 7 6 bit, and installed it in the compatibility mode. Hey presto, no stutter, even in the power saver mode!!!!
Enjoying my music. The issue is with the windows default drivers and the priority assigned to the task in the low power consumption modes. Try Installing the original drivers that came with the machine. Should resolve the issue

Movie audio stuttering

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