Quicktime will play .avi video but no sound

I've been able to play .avi files with sound and video before but for some reason this one file is refusing to play sound and only this one file. why would this be?

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HT3775 My DVD player is supposed to play avi videos, but it often doesn't telling me that the file format is not recognized. I suspect it's because it's the wrong codec. How can I tell what the codec is before I burn a DVD? And how do I get a workable

My DVD player is supposed to play avi videos, but it often doesn't telling me that the file format is not recognized. I suspect it's because it's the wrong codec. How can I tell what the codec is before I burn a DVD? And how do I get a workable codec? Thanks for uour help!
Ken Selvidge ([email protected])

I am not a computer savy person. I just need to plug in and have the machine do what it should do.
Not a problem, but that indicates you have a lot to learn.
File extensions like mpeg, mp4., avi, wmv, etc. are just wrappers. It is like a box the audio or video content is placed inside. The audio and video content must be encoded with a codec before it is placed in the box. There are thousands of codecs. Not all are installed on your Mac. You must have the same codec installed that encoded the video in order to play it. So, while Quicktime does support mpeg wrapper, it may not have the codecs to decode the internal video.
Some programs have lots of the codecs available to them, like VLC, Niceplayer, MPlayerX, etc.
You can also get "plug-ins" for Quicktime that add codecs to Quicktime, like Perian. Although it is no longer being developed, Perian still works well.
Why is it so difficult? Probably because they are always working on ways to compress the video to get better playback.

Hi i am putting photos in my project it will play the videos but not the photos never had a problem before

hi i am putting photos in my project it will play the videos but not the photos i have not had a problem with this before

If you haven't tried re syncing the apps using iTunes..
Connect the iPad to your computer. Select it under Devices left side of the iTunes window. Select Apps from the menu, make sure the boxes next to those apps are selected then click the Sync button bottom right side of the iTunes window.

Front row plays dvd video but no sound

I tried several dvds in front row and I can't get any sound from them. I can play avi type movies, music and on but I get no sound from dvd's. I can play them on dvd player and get sound but not front row. been running into alot of quirks since the leopard upgrade. hope they patch it soon.

try to isolate the issue to front row by playing it in dvd player. you may get an error message saying that dvd player cannot run because it is being used by another program in which case you have to go to applications/utilities/activity monitor.app find the front row process and control-click quit process or highlight click quit in the upper left hand corner of activity monitor then select quit. run the dvd in dvd player.app and see if it repeats the problem. if not then most likely it's a front row issue. if it happens again try another dvd player software. if you find that it happens on both dvd player.app and front row but not a third then it would most likely be be a dvd player.app issue in which you locate the plist file in library/preferences/ quit out both front row and dvd player.app to ensure it doesn't recreate a duplicate plist file then move the original to trash then open dvd player.app and try again. if all of this fails and it seems hopeless before going to a fresh install or archive and install I recommend update install. I have used this to fix what seemed to be broken and incurable apps on several macs now with success. but try the other stuff first to save you some time if possible. as of now all of my apps other than those non-compatible with Leopard are functioning just fine with the occasional bump in the road. Fixes are necessary as there are quite a few needed but I ran into the same thing with Tiger when it first came out and Tiger was a great OS.

IPod Classic will play movies/videos, but no music whatsoever.

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Hi there,
I would recommend that you take a look at some of the troubleshooting steps found in the article below.
Troubleshooting songs that skip on iPod
http://support.apple.com/kb/TA26488
Hope that helps,
Griff W.

80 gb ipod will play my videos but there is no sound

i read the answer to why it doesnt have sound and the solution to the answer and someone said that i have to use a different converter so i chose one from the ones that this one guy listed on this forum but after that how do i transfer the video from the new converter program to the ipod? im using mpeg streamclip do i have to export to quicktime or do i have to convert to mpeg? I'm so lost and confused and frustated please help.
Windows XP

Im also having the same problem and would like a solution.

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Hello,
I use my MacBook Pro at home with Apple TV to home share videos and music. I have also recently upgraded to mavericks.
When I play videos on my tv at home they work fine, but I am traveling and now videos will not play. They just show 0:00 with a pause button instead of a play button. Some videos do work, but only a handful.
Would this be due to the mavericks upgrade? Should I re-install iTunes?
Any help would be greatly appreciated!

Hi gta,
Ok.. let's try this. Launch Disk Utility, it's in your Applications/Utilities folder. Select MacintoshHD 10.x.x in the panel on the left, select the FirstAid tab, then click: Repair Disk Permissions. Quit Disk Utility when it's finished.
Get Onyx. It's a free disk utility. Run the Maintenance and Cleaning Scripts once a week. It's available here: http://www.apple.com/downloads/macosx/systemdiskutilities/onyx.html
If none of the above works, delete these files:
/Library/Preferences/com.apple.networkConfig.plist
/Users/YourName/Library/Preferences/com.apple.NetworkDiagnostics.plist
/Users/YourName/Library/Preferences/com.apple.NetworkUtility.plist
Note -- the com.apple.network.Config.plist is not located in your home folder --
Drag those files to the Trash, empty the Trash and reboot. You will have to reset your network preferences.
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How to play .avi video files

I've been searching for a program to download that will play .avi video files. The things I find, I either can't install, or they don't play .avi. I can't install them because I can't figure out how to run .exe applications either, which most of the installation files are (it just says choose application).
Can someone please tell me of a good update to quicktime or a different video program, and/or tell me how to open .exe files?

Well you can check out some of the free players like
VLC:
http://www.versiontracker.com/dyn/moreinfo/macosx/14738
or
Mplayer:
http://www.versiontracker.com/dyn/moreinfo/macosx/27163
Both of which will play just about any file format.
Alternatively you can set up quicktime to play these same files (mpeg4, avi, etc.). You can find out how to do so along with links to the various codecs here:
http://www.lordofthecows.com/avi_qt.php

QT plays sound on some avi videos but not all

i can play an avi video perfectly with sound and everything, but then i download another and the video play without sound. anyone know what is up and how to fix it?

[Perian codecs for Quicktime|http://www.perian.org] - plugins to add functionality to Quicktime for playing additional audio and video formats
[Quicktime audio problems, Perian, VLC|http://discussions.apple.com/message.jspa?messageID=9013669] - read note about uninstalling prior DIVX support before installing Perian.

HT3775 My Macbook Air (still with Lion) will not play .avi video files

My Macbook Air (still with Lion) will not play .avi video files (brought over from an older PC where they play with another viewer). This site implies Quicktime Player should be able to do so. Is there a codec or something else I'm supposed to download?

I had found this through other threads, but it is what worked, even allowed my AVI files to be played in PowerPoint. Changing to 32-bit encryption did not work, BTW.

I have m4v files that have subtitles and sound options they play fine on my computer in itunes and but when i watch them on my apple tv there is video but no sound ... why ?

I have m4v files that have subtitles and sound options they play fine on my computer in itunes and but when i watch them on my apple tv there is video but no sound ... why ? all my other videos are fine and they in mp4 format.

Mov is a container format, you'd need to look at the codec used by the movie file inside the container to know whether it will work with the Apple TV or not.

Firefox plays video, but no sound. when I type about:plugins in location bar, it shows the firefox default plugin is not enabled. When I look at my plugins, it says it is enabled. I have uninstalled 3.6 and re-installed with the same result.

firefox plays video, but no sound. when I type about:plugins in location bar, it shows the firefox default plugin is not enabled. When I look at my plugins, it says it is enabled. I have uninstalled 3.6 and re-installed with the same result. Why do I have no sound. Computer plays I-tunes and all other sounds, just no web browser sounds.

Glad you seem to have sorted things out.
The warning about the warranty is light hearted, I think at one stage it warned "here be dragons" but also intended to make us think as it warns that making changes may produce problems.

I have windows 8.1 and firefox won't play youtube videos but IE will

I have windows 8.1 and firefox won't play youtube videos but IE will. I have tried reinstalling firefox, flash, java. Resetting firefox don't help, disabled hardware acceleration, protected mode 0 in the mms.cfg file. Nothing will play on youtube in firefox. It says "an error has occured, please try again later". The ads play fine though. Everything plays fine in IE. I have tried different versions of flash also with no luck. I even restored the system to a previous iso image with no luck. Does anyone have a solution?

It maybe because your javascript is disabled .
You can check the javascript.enabled pref on the about:config page.
http://kb.mozillazine.org/about:config
There are also extensions that can block JavaScript or otherwise interfere.
https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
Or,
"Clear the Cache":
Firefox > Preferences > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
Firefox > Preferences > Privacy > Cookies: "Show Cookies"
Start Firefox in [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Safe Mode] to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
'''''Do NOT click the Reset button on the Safe Mode start window.'''''
https://support.mozilla.org/kb/Safe+Mode
https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
please report us if any problem.

I want to create a "Play All" chapter marker that will play the video from start to finish in addition to the standard chapters I have-I guess I can auto start the DVD but would prefer a button-how and where would I put this "play all" marker??

I want to create a "Play All" chapter marker that will play the video from start to finish in addition to the standard chapters I have…I guess I can auto start the DVD but would prefer a button…how and where would I put this "play all" marker?? Thanks..

The start chapter button is a play the whole movie button regardless of how many other markers you have.
Once a DVD starts playing it continues to the end.
Chapters marker simply gives the viewer a place to start playback whether it be the start, middle or near the end.
Al

After using video capture device to copy VHS to DVD, burnt DVD will play on computer but not

After using video capture device to copy VHS to DVD, burnt DVD will play on computer but not on DVD player. Tech support for the VCD said my HP DVD burning software has to burn "DVD Video and not DVD data" and to check with HP. How can i check myself.

Grahamster, welcome to the forum.
I recommend trying CDBurnerXP for burning video CD's. I have been using it for years without a glitch. I use it mainly for burning ISO's, but have used it for all types. Please let us know if it works or not.
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Quicktime will play .avi video but no sound

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