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How to Compress Movie ISO File but Maintain High Quality

"I have a large collection of movie DVDs. I have ripped some to ISO image files, but these ISO files eat up too much space of my hard drive. Can I compress ISO files to release some space?"

You can compress ISO[wiki] to RAR format or 7-Zip format, but you probably won't get much compression, especially if the files stored within the ISO are already a compressed format wrapped into the ISO. I've compressed a 7.26GB movie ISO file to RAR format and got a RAR file of 6.75GB. The file is only compressed to about 90% of the original.

To compress a video .ISO file, you can recode it into a smaller file format, such as H.264 which has quite efficient compression. Hardware-accelerated WinX DVD Ripper is such a tool that can fast compress movie ISO file to H.264, MP4, AVI, DivX, MPEG2, WMV, MOV, and more formats. An 8GB ISO file can be compressed to 1-2GB MP4 (H.264) while keeping high quality. So, this is a very efficient ISO compressor. You can also burn the compressed file in MP4 and the like to DVD.

What's more, WinX DVD Ripper also allows you to throw away unwanted audio track, downscale video resolution, lower bit rate, cut unwanted clips, and crop video, to shrink file.

Besides reducing ISO image file size, WinX DVD Ripper can also backup DVD to ISO at 1:1 ratio, backup full DVD to VIDEO_TS folder, and digitize DVD to MP4, AVI, MP3, iPhone, Android, and more popular video audio formats and devices. Almost all your home-made and store-bought movie DVDs, TV series DVDs, fitness DVDs, educational video DVDs, and others are supported, even if they are strongly encrypted by CSS, RCE, UOPs, APS, Sony ARccOS, Disney X-project, etc.

Now free download WinX DVD Ripper to compress ISO file while maintaining quality or backup/rip DVD.

How to Compress ISO File Without Quality Loss?

To get started, click the download button above to download and install WinX DVD Ripper. Once done, we can move to the following steps.

Step 1. Open WinX DVD Ripper, and click ISO Image to load the ISO file you want to compress. WinX will auto select the correct main title for further compression.

Compress ISO file
Compress Movie ISO to MP4 without loss of Quality

Step 2. In Output Profile panel, select which format you want to compress ISO to. Here we choose MP4 Video (H.264+aac) under General Profiles.

Step 3. Check Use High Quality Engine and hit RUN to begin converting and compressing ISO to specified format. It won't take too much time thanks to the support for multi-core CPU, hardware acceleration, and other advanced technologies.

Disclaimer: Digiarty Software does not advocate ripping commercial DVDs for any illegal purpose. You're suggested to refer to the DVD copyright laws in your country before doing so.

Need to Burn Compressed File to DVD? Check This

If you have compressed ISO to H.264-encoded MP4 or other format and need to burn the resulting file to DVD, you can use WinX DVD Author. This software can burn MP4, AVI, WMV, and a variety of video formats to DVD. Below is the guide.

Preparatory work:
1. Free download WinX DVD Author, install it, and open it once installed.
2. Insert a blank DVD into DVD drive.

Step 1. Click Video DVD Author button.

WinX DVD Author interface
Burn compressed file from ISO to DVD

Step 2. Click + button to load the video file compressed from ISO image file. You're allowed to import multiple files for later burning to one DVD disc. Once done, click >> button.

Step 3. Create menu.

Step 4. Hit Start to begin authoring video to DVD.


author - Donna Peng

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Donna Peng's fascination with multimedia began at an early age - shortly after she licked the physical disc and then she's been obsessed ever since. Her decade-long career at Digiarty after the graduation has seen her unmatched expertise in the field of DVD, digital video, software and anything related to home theatre. She is currently fascinated with photography.

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