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Convert Blu-rays to iPad with BD Rebuilder

Here’s another one for the books! The great author of BD Rebuilder has just added another excellent feature to the already stellar Blu-ray backup program. iPad conversion. That’s right, you read the correctly. Now, with just 1 extra click, you can convert your Blu-rays to an iPad friendly format. Let me show you how.

Step 1)

Before you begin make sure that you have ripped your Blu-ray to your harddrive.

Start up BD Rebuilder. Make sure that you have all of its necessary programs installed (Avisynth, Haali’s Media Splitter, FFDShow). You should see a window like the one below.

The main window for BD Rebuilder

Step 2)

Navigate up to the Mode menu up at the top of BD Rebuilder’s main window. Select the Movie-Only Backup option from the drop down menu.

A drop down menu in BD Rebuilder showing the Movie Only Backup menu entry.

Step 3)

Now, click on the Other Movie-Only Output menu entry, like I have shown below.

The BD Rebuilder mode menu with the "Other Movie-Only Output" option selected.

Step 4)

You should see a window like the one below. Enable the iPad MP4 HD profile that I have highlighted at the bottom, and then set your desired CRF value. The CRF value is essentially a quality vs. size ratio. The lower the CRF value, the greater the quality and filesize. The higher the CRF value, the lower the quality and filesize. You get the idea.

You can either leave the CRF at default, or enter your own preferred value. When you are finished, click Save.

The alternative output window in BD Rebuilder, with the iPad profile highlighted.

Step 5)

You should now be at the main window again. Use the Source path to select the folder that contains your Blu-ray’s BDMV folder, and the Working path to select your output/workfiles directory.

The BD Rebuilder window with source and work folder paths set.

Step 6)

When all is said and done, the BD Rebuilder will look something similar to the following screenshot. When you are ready, click the big and beautiful Backup button.

The main BD Rebuilder window, with the "Backup" button highlighted.


As you can see, BD Rebuilder greatly simplifies the whole conversion process for you. Feel free to experiment with any of the parameters and let me know how it works out for you in the comments!

  • Bz

    I am just getting started in BluRay ripping and I am finding many software “solutions” that end up being not what I am looking for. First , I fail to understand why people want to shrink a BD only to put them on a DVD… I mean , just get the DVD in the first place. My sole reason for investigating this is that I have been doing DVD to hard-drive rips for a couple years now , ( I store all my movies on an external hard drive ) and I want to start doing the same with BD for the increased quality , but I want to stay at a smaller file size , say at or under 1GB. Am I all on my own here ot are others looking to do the same?
    I have found that the original quality of the DVD plays a huge role in the rip outcome ( I use AutoGK – XVID to AVI ), so it only goes to reason that a BD would be better…. but the problem for me is all the software I’ve investigated thus far rips the BD anywhere from 1.5GB to equal to the original (23GB and up).
    I’m currently testing BD Rebuilder as it looked like I could specify the end files size , but I dont see an option to change it… am I missing something? And can you be a bit more specific on the CRF value setting instead of it just being a guess please?
    So far ir looks promising… I’ll know in about 30 minutes or so….

    Thanks for the FREE :) softrware!!

  • Adub


    I think you need to re-evaluate your desired filesize. When dealing with DVD (480p) content, 1 Gig is reasonable. However, when you are dealing with 1080p Blu-ray content, and you still want to keep the “increased quality”, 1 Gig is insanely low. Now, if you were to take your Blu-ray and downsize it to 720×480 resolution, then 1 Gig would be more reasonable. But keeping the original resolution and desiring some form of decent quality at 1 Gig is just too much to ask.

    You can in fact set the desired filesize. Just go into the “Setup” and use the “Custom Filesize” output setting. I’m currently on my Mac, so I can’t tell you the steps exactly off the top of my head, but if you have issues, let me know and I’ll find a Windows machine to use.

    As for CRF, it’s an interesting process. CRF stands for “Constant Rate Factor”. What this means is that every single frame in your movie will be compressed at a specific (constant) rate. This means that you will see a consistent level of quality across your entire movie. However, since each frame can differ in it’s complexity (ex: an action scene vs a relatively static scene), then varying bitrates will be used for each frame to keep the “constant quality”. This makes it somewhat difficult to determine the output size of your movie or video clip. However, this is perfectly fine for a lot of people. In todays world of 2 TB harddrives, a specific quality level is more often desired than a specific filesize.

    Did I answer your question?

  • BZ

    Thank you for the response Adub,
    For someone to take the time to reply to a posting like this seems rare these days.
    The file size is relative to the quality , yes ,… but the increase in quality when compared to my standard old DVD rip at 800MB vs. say a 4GB BD rip isnt worth the space-price from what I’ve seen so far. Yes , it is “crisper” , but I am already at 983 movies on my external hard drie ,so when your talking 5 times the space , not to mention the time involved in the total process… well , I guess I’ll wait a bit longer for the tech to catch up to my lofty desires. ;)
    As for the custom file size , I checked everywhere in the program and found only that it says custom at 23GB , but has no way of changing the actual size… Yes , I’m using Windows 7 – 64bit. I thought I found it under File – Edit where I could overtype the size , but it reverted back to 23GB when I started the process. Since I’m new to this particular software , I’m probably missing something , but I sure thought I looked at everything…
    Thanks again for the response and the free program. It’s great to see people that take pride and joy in thier work like this!
    Oh , thanks for the CRF explanation.

  • Ankrum


    I’ve been able to back up BDs. However, I’m having a problem with choppy video and audio. It seems to happen mostly on concert videos. Any ideas?


  • Adub

    Its interesting that your problem really appears on concert videos. My guess is that they start getting choppy during a really high motion or visually active scene, correct?

    If so, then it may be that your computer is having trouble decoding the sudden spike in video bitrate. What I suggest is that you update your codecs, and if you have at least a dual core machine or greater, set FFDShow’s H264 decoding option to ffmpeg-mt (with stands for ‘multi-threaded’). If you are still having issues, and you have a newer video card in your computer, you may be able to use what is called DXVA, which is a means of accelerating the video decode by offloading the process to your graphics card. If you use Media Player Classic Home Cinema, you should be able to use DXVA with pretty much any of the renderers accept Haali’s. You can see which renderer you are using under Options > Playback > Output.

    To be sure that you are using DXVA, simply right click on the screen while a video is playing in MPC, and go to Filters > MPC Video Decoder.

    Note: This last tip is only if you have a newer video card. See this list for reference:

  • Adub

    Or were you having problems with choppy audio/video on your iPad?

  • Ankrum


    Must be something with my computer. I played the same disk in my OPPO BD player and it worked fine.

    I’ll try your suggestions.


  • Bryan

    Thanks for the tutorial, Adub. I’ve been trying for the past several days to do a conversion of a blu-ray movie (ripped to my HDD by AnyDVD HD) to a relatively compact mp4 file (~1 GB). I’ve tried both Ripbot264 and BD Rebuilder. With both programs the resulting file has had a number of problems: wrong audio track (commentary), distorted aspect ratio, no forced subtitles (movie is in English, but some characters speak other languages that need the subtitles), and horrific picture quality. It takes the better part of a day to do a single experiment with the settings. Is there any way with either of these programs to encode just a 5 minute segment of the movie so that I can find out which settings are going to give me what I want?

  • Adub

    Yes, actually. You can access the Avisynth scripting portion of both programs.

    In order to cut the length of a movie, simply add the following line to the end of the script:
    Trim(startFrame, endFrame)
    example: Trim(1000, 3000)

    Or use the SelectRangeEvery() function to get a nice sampling of the entire movie. Usage can be found here: