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No Sound When Converting Avi Files To Itouch


eskiba
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hey,

 

i am new to this mac stuff so i am having trouble here. i have roxio toast 9 installed as well as all divx/xvdi/perenial codecs install. when i try to encode the xvid file so i can put it on my itouch i get no sound, just video. can anyone help?

 

 

Basically if you can play it in QuickTime player, you can transcode it to whatever format Toast supports.

 

You should be aware of one thing though. You probably have a nasty QuickTime codec conflict on your Mac.

DivX, XviD and Perian cover more or less the same base of DivX-related files (XviD is outdated, DivX often provides good quality but supports only a limited number of formats, Perian has the largest spectrum as far as file formats are concerned, but quiality for playback is a little behind).

 

In your case, I'd probably only keep either the DivX decoder component or Perian and I'd remove XviD.

It's sad that QuickTime doesn't allow you to select the plug-in of your choice for a specific file type when there is an overlap like that.

 

 

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Basically if you can play it in QuickTime player, you can transcode it to whatever format Toast supports.

 

You should be aware of one thing though. You probably have a nasty QuickTime codec conflict on your Mac.

DivX, XviD and Perian cover more or less the same base of DivX-related files (XviD is outdated, DivX often provides good quality but supports only a limited number of formats, Perian has the largest spectrum as far as file formats are concerned, but quiality for playback is a little behind).

 

In your case, I'd probably only keep either the DivX decoder component or Perian and I'd remove XviD.

It's sad that QuickTime doesn't allow you to select the plug-in of your choice for a specific file type when there is an overlap like that.

 

 

so they all play in quicktime, but when i transcode to the format for iTouch/iPhone i get no audio. why would that happen. i removed the other codecs and only have perian and am still having the same problem. when i transcode and try to play in QT/itunes i have no audio

 

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so they all play in quicktime, but when i transcode to the format for iTouch/iPhone i get no audio. why would that happen. i removed the other codecs and only have perian and am still having the same problem. when i transcode and try to play in QT/itunes i have no audio

 

Audio can be tricky. Do you know what codec has been used for Audio??

Two file types give a great deal of trouble for audio:

- mpeg muxed files (QuickTime can't re-encode the audio — and Toast uses QuickTime for transcoding. EyeTV exports files like that)

- AVI files using Windows Media Audio.

 

Another common format would be AC3. You need a specific codec to transcode this one I believe.

 

You can use VideoSpec to figure out what audio codec has been used in the original file.

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