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How do I watch a 4GB film in 'disc image file' format on my computer? I tried VLC but only one "extras" clip is working but without any audio and when I click on any other options on the home screen nothing happens. I thought VLC played everything.

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How do I know what sort of image it is? Also, the thing is I thought I'm only supposed to "Accept" if it helps my problem so it can be useful to others. Most of the answers I got didn't help. Should I "Accept" anyway? – verve Oct 26 '11 at 23:21
You're right that you shouldn't, but most people here will see the 10% and decide it's not worth it usually. I'm not at 100% either though. Anyways, is it an ISO, an IMG, a DMG? The file format of the image – Canadian Luke Oct 26 '11 at 23:30
Under type in Explorer it says: disc image file. – verve Oct 27 '11 at 2:26
Oh, under Properties it says: .img – verve Oct 27 '11 at 3:12
up vote 3 down vote accepted

It really depends on what this Disc image file is.

VLC has some success opening some image files directly, but, I have known it to fail sometimes for unknown reasons.

Why it is failing in your case - I can't honestly say without a lot more information.

Providing this is a standard image file, I would recommend downloading Virtual Clone Drive then mounting the disk through that, so, it appears to the computer that you have inserted that disk for real - then relaunch VLC choosing the (virtual) drive instead of the file.

If it works - great, it was one of the many VLC bugs that seems to be happening lately. If it still doesn't work - it could simply be that a codec is missing from your machine that is required to play it.

Depending on what codec it is, you may have some luck installing the K-Lite Codec pack.

I would think it is more a case of codec missing - especially if the disk is high definition or has some similar special features (3d etc.).

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How can I tell what kind of image file it is? – verve Oct 26 '11 at 23:12
Awesome. Virtual Clone Drive made it work in VLC! – verve Oct 27 '11 at 3:40

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