No audio on some clips

Hi
I am a cameraman and am creating a showreel for myself on dvd. A lot of the material I have originates on dvd that clients send to me of my work edited. I then use a programme called "cinematise" to rip these dvd's into quick time files.
When I preview my created dvd in idvd everything seems fine but when i burn to disc all the audio is lost on certain clips. I have looked at the audio properties of these clips in quicktime and it says they are Mpeg 1.
I also have another clip that has the audio on it when played back on my computer but the audio is lost when played in my dvd player. Please could someone help as I am tearing my hair out!!! and lots of dvd's are going in the bin.

Having had a similar problem - added sound files, layed ontop of camera video, plays fine on burned DVD, but camera audio goes out and never comes back.
After reading for several hours on iDVD 4 & 5, there appears to be no clear answers, Apple has not posted any solutions & the only canidate that might work - need to try it myself tonight, is to record back to a MiniDV camera at 16 bit sound, start a new iMovie project & redownload the video to the computer with 16 bit audio. I'll try to get back and let you know if it works for me.
For some reason, people are saying that 12 bit audio tends to cause problems - some of your client video clips might have been in 12 bit audio and is only showing up now with these versions software.
Hope this helps,
Terry

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To answer your notes, I have tried everything I can think of to resolve the problem. I am now lip synching with no audio to keep working.
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Message was edited by: weisseruebe

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Hi juicespeare1,
Welcome to the Sony Community!
Upon checking your inquiry, the best division to respond to your concern is our Sony Mobile department.
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If my post answers your question, please mark it as "Accept as Solution"

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I have always copied the entire card file / folder structure to the hard drive.
Upon investigating the import options, I think I now see where the problem is. I am using a JVC GY-HM700E camcorder. This is stated to record XDCAM EX in MP4 or .MOV files. I have been using mov files. CS6 won’t combine the individual parts into one clip in the project panel. If I switch to MP4 files, CS6 will import all parts as one file. But the sequence shows a yellow render bar above all the clips. The mov files do not have any render bar over them. That’s why I used mov files rather than MP4 files. Before anyone suggests that the sequence I have used does match the MP4 files, I deliberately set up a wrong sequence, dragged a MP4 file to it, Premiere prompted that the sequence settings were wrong and I let it set the correct sequence settings. The MP4 files still have a yellow render bar over them.
The Adobe PDF that I looked at;
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No audio on some clips

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