Mpg to Mov Files without sound

I REALLY need to convert mpg files to mov files cause I need to use then with iMovie and FCP. But when I convert mpg to mov, the files are without sound. I'm using Quick Time 7. Are there anyone to indicate a solution or another converter app? I need mov files WITH sound.

I REALLY need to convert mpg files to mov files cause I need to use then with iMovie and FCP.
MOV is a file container. It can contain an valid combination of audio, video, text, 'Tween, Chapter, etc. data. What compression format do you want to edit in natively with iMovie or FCP?
But when I convert mpg to mov, the files are without sound.
The MPG file container normally contains audio and video data multiplexed as interspersed blocks of data in a single stream to provide spatial synchronization of audio and video. QT is based on parallel tracks of audio and video synchronized temporally. Since QT can only demultiplex and convert one track of data, it is programed to convert the video and leaves the audio out of the new file. As was previously indicated, if you wish to retain audio, you will have to use an MPEG based application. MPEG Streamclip is free and considered by most QT users to be both reliable and a standard by which other such apps are judged.
When I use that I got a file just with sound and no image. What I supposed to do?
Once again we return to the primary question of what compression format you want to edit in natively in iMovie or FCP. Most people choose DV/DV or AIC/Uncompressed but other options include Photo JPEG, Motion JPEG, MPEG-4, or H.264 with any edit compatible audio compression format. As an FCP, pro codecs are also available depending on your specific needs or wants. The compression codecs you wish to use will, in the end, determine which MPEG Streamclip conversion option you select and what settings are available.

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1. used mac-the-ripper to get the Video_TS folder from a DVD with now encryption.
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2. then I took that .VOB file from that and drug it into MPEG Streamclip to convert the .VOB file to an xxx.mpeg... I'm trying to take a xxx.mpeg file and convert it to a smaller xxx_web.mov file that I can use for posting on the web and sending to friends easily over ichat.
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All is well up till this point and xxx.mpeg plays fine with sound. Next I tried to use quicktime pro to export my xxx.mpeg file to xxx_web.mov. This gave me video with now sound
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Then I read about mpegs being muxed and I needed to demux them. So I used MPEG Streamclip to demux xxx.mpeg with the following option from MPEG Streamclip:
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I just started using MPEG Streamclip can it do everything i'm trying to do (meaning can I bypass using quicktime pro)?... Can someone walk me through what I'm doing wrong?
Already covered. (See above.)
If I export to any format (QuickTime movie, AVI, Windows Media, MPEG-4), all of the audio options are greyed out. Some say explicitly that there is no audio in the source movie. If I go ahead, I get a file with no audio.
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QuickTime is obviously able to decode the .m1a audio since it can play it. Why does it seem to not be aware the audio is there if I try to export it?
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