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Since DVDs are essentially becoming obsolete or at least the macbook laptops do not have accessibility to them anymore, I thought it would be good to back a backup for them before I get rid of the DVD reader laptop and thus still be able to watch my videos.

The issue is that I don't know how to watch the DVD inside of my iphone even if I have access to the dmg file. One solution could be to have some app that access the DMG through dropbox/icloud and then open it with the app. Does that exist?

What I thought was more sensible was since some of these are lessons divided into separate videos, to convert the DMG to individual mp4 or .mov files which are easily watchable in the iphone. Is that possible?

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DMG is a disk image file format.

Disk image files behave like a physical disk. In so doing, the operating system interprets them in the same way as if you had just inserted a CD-ROM, USB drive, etc into the computer.

So, to play DVDs you've converted to a disk image such as .DMG, you'll need to do two things:

  1. Expand the disk image so that the 'DVD' becomes available
  2. Open the DVD with some sort of 'DVD player' software (because what the operating system sees is a DVD)

In other words, an iOS devise like an iPhone is not going to be able to play a DVD. So, backing up your DVDs to a disk image file is a great way of preserving/backing up your DVDs for future access, but it's not a way to actually play your DVDs without the appropriate operating system and software. You could certainly expand the .dmg disk images and then use a DVD Player app on a Mac to view the DVD, or burn them to a DVD to make them available to a physical DVD player.

If your intention is to be able to play them on an iPhone or iPad (or any other smartphone/tablet) what you'll need to do is rip the DVDs to a video file format (e.g. .mp4, .mov, etc) and then transfer these files to your device. Depending on the file format you use, you may also need to install 3rd party app to be able to play them.

Some further reading:

  • so its not possible to read the DVD file from an IOS device directly even if I have access to the DMG everywhere? – Pinocchio Dec 3 '17 at 23:03
  • If by DVD file you mean a DVD movie that you buy in a store, then the answer is no. Instead you can rip your DVDs (and there are heaps of options for doing this, including very easy to use software) and then transfer those ripped files onto your iOS device to view them. You can even store them on the iOS device, but how many you can store will depend on the storage capacity of your iOS device and the video format you opt for. But what you'd be storing are video files (e.g. .mp4, .mov, .avi, etc). Also, depending on the video format you use, you may need to use a 3rd party app to view them. – Monomeeth Dec 3 '17 at 23:26
  • what I mean is that I have a dmg that I can send to my iphone with no problem. Now I need an app to watch it or something... – Pinocchio Dec 4 '17 at 5:18
  • A .dmg is a disk image file format. It is not something you can watch. – Monomeeth Dec 4 '17 at 5:24
  • VLC reads it fine though in my macbook pro though is what I meant by "watching a dmg". – Pinocchio Dec 4 '17 at 5:43

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