An iMovie library holds all the media and data used to make movies in iMovie. If your iMovie library is large and you want to free up storage space on your Mac, you can move your iMovie library to an external drive. Before you move an iMovie library, it's a good idea to back up your Mac.
Regardless of the iMovie version, you are using (9, 11 or 10) and the available iMovie formats for export, you can easily convert iMovie to any format you need. How to convert iMovie video to MP4, MP3, WMV, MOV or any other formats. Cisdem Video Converter for Mac can convert any video to compatible iMovie formats. The article would show you how to convert and import MP4 to iMovie on Mac step by step with a professional MP4 to iMovie Converter for Mac (macOS 10.15 Catalina, 10.14 Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion and Lion included) - UniConverter. By running it, there's no need to set the codec by yourself: the. How to Change Aspect Ratio in iMovie Directly. I'm using iMovie 10.1.9. The aspect ratio is fixed to 16:9, and there's no entry to change it. But you can still change video size to achieve the goal of chaing apsect ratio. Here are detailed steps. Step 1 Import video into iMovie. Step 2 Drag it to the timeline below. Click Cropping – Crop to.
As part of the transition to 64-bit technology in macOS, you may see an alert in iMovie about media files that won't be compatible with macOS Catalina.
Before you upgrade to macOS Catalina, you can use iMovie to detect and convert all incompatible media files so they'll be compatible with future versions of macOS. After you upgrade to macOS Catalina, the option to convert the incompatible files will no longer be available.
To make sure new media you create is compatible with macOS Catalina, use cameras and media formats supported by iMovie.
In macOS Catalina, you might see an incompatible media message in the viewer when trying to play incompatible media if you haven't converted it before upgrading to macOS Catalina.
Detect and convert incompatible media files in iMovie on macOS Mojave
When you import media or open a library in iMovie 10.1.11 or later on a Mac with macOS Mojave, a window appears that lists incompatible media files in your library.
To convert incompatible media files immediately, click Convert in the window. iMovie creates copies of the media files in the H.264 format. The original files are moved to an iMovie Incompatible Media folder, located in the same folder as the library. Your original media is not modified.
If you want to convert them later, you can use iMovie to scan the library and convert the incompatible files:
- In iMovie choose File > Check Media for Compatibility.
- In the window listing incompatible media files, click Convert.
Learn more about how iMovie detects and converts incompatible media files.
Formats compatible with macOS Catalina
These video, audio, still-image, and container formats are compatible with iMovie on Mac computers with macOS Catalina:
Video formats
- Apple Animation Codec
- Apple Intermediate Codec
- Apple ProRes
- AVCHD (including AVCCAM, AVCHD Lite, and NXCAM)
- DV (including DVCAM, DVCPRO, and DVCPRO50)
- H.264
- HDV
- HEVC
- iFrame
- Motion JPEG (OpenDML only)
- MPEG-4 SP
- Photo JPEG
- XAVC-S
Still-image formats
Audio formats
Container formats
Media formats affected by the transition to 64-bit technology
Examples of media that will be affected by the transition to 64-bit technology include video files from early Flip Video cameras that use the 3ivx codec, early web videos encoded with the Sorenson codec, and media converted from DVD to the DivX format.
Third-party developers may continue to offer compatibility with some formats by building support directly into their apps. Contact developers of third-party apps for more information about media formats supported in their apps.
Here are some examples of media formats affected by this transition:
- 3ivx MPEG-4
- AV1 / VP9
- AVC0 Media AVA0 Media
- BitJazz SheerVideo
- CineForm
- Cinepak
- DivX
- Flash Video
- FlashPix
- FLC
- H.261
- Implode
- Indeo video 5.1
- Intel Video 4:3
- JPEG 2000
- Microsoft Video 1
- Motion JPEG A
- Motion JPEG B
- On2 VP3, VP5, VP6, VP6-E, VP6-S, VP7, VP8, VP9
- Perian collection of codecs (Microsoft MPEG-4, DivX, 3ivx, VP6, VP3, and others)
- Pixlet
- Planar RGB
- QuickTime files encoded using still image formats (SGI, TGA, PNG, and others)
- RealVideo
- Sorenson 3
- Sorenson Sparc
- Sorenson Video / Video 3 / YUV9
- Streambox ACT-L2
- Windows Media Video 7, 8, 9
- Xiph.org's Theora Video
- ZyGoVideo
Convert incompatible media not contained in an iMovie library
To convert an incompatible media file, open it with QuickTime Player (version 10.0 and later) in macOS Mojave or earlier, then save a copy with a new name. This method isn't supported in macOS Catalina.
You can also use Compressor to transcode one or more media files into a format such as H.264, HEVC, or Apple ProRes. These formats will be supported in versions of macOS after macOS Mojave. H.264 and HEVC preserve image quality with the smallest file size. ProRes preserves the best image quality and provides better performance when editing in iMovie, but creates much larger files that use more storage space than H.264 and HEVC files use.
The proportional relationship between a video's width and height is the aspect ratio and this will determine how the video will look on various players.
You will learn in this article how to use iMovie to adjust the aspect ratio of your video.
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Before We Begin Please Note:
Before we begin, please note that iMovie 10 or later versions have widescreen (or 16:9) aspect ratio.
Custom resolutions are NOT supported. Only videos with the following resolutions can be edited and exported in iMovie:
- 1920×1080 (1080p)
- 1280×720 (720p)
- 960×540 (540p)
- 854×480 (480p)
Note: these aspect ratios are all 16:9. You have the option to insert black borders or use iMovie to crop/frame the video so that it could be used in another video editing tool.
If you want to use aspect ratios of 1:1, 9:16 or 21:9, then iMovie is not to tool to use in those instances.
1. Convert Aspect Ratio More Effectively Using Movavi Video Editor
Movavi Video Editor is a user-friendly and flexible slideshow maker and video editor and is compatible on both PC and Mac computers.
Use this software to effortlessly do basic video editing. Movavi also includes advanced video editing tools like Chroma Key Effect, Time-lapse and image stabilization.
Movavi also comes with a library that contains hundreds of amazing filters, overlays, text and motion elements, which are updated regularly. All of these tools help to you create amazing videos.
With the video aspect ratio converter, you can permanently alter the video's aspect ratio to be compatible with your target gadget. Movavi is compatible with 1:1, 4:3, 9:16, 16:9 or any other custom aspect ratio you require:
Step1. Download Movavi Video Editor and install it on your PC.
Step2. Import video to be edited into Movavi.
From the folders where the video clips are stored on your computer, just drag and drop them into the video editor.
Step3. Adjust the Video's Aspect Ratio
On the right side, just below the preview window, there is a drop-down menu with various video aspect ratio options.
Pick from the standard ones provided or customize the video width and height to your needs.
The most popular presets have been calculated for your reference along with their respective aspect ratio values.
Or you can use one of the online aspect ratio calculators to calculate the missing width and height pixels.
2. Changing Aspect Ratio using iMovie on Mac
As outlined earlier, iMovie does not allow you to customize video aspect ratios.
One option is to edit and save the video in iMovie as usual and then upload that video into another video editor like Keynote to edit the aspect ratios.
For newbie editors, this process is somewhat complex, but it works.
Find out below how to use Keynote to adjust video aspect ratios:
To begin with, Use iMovie to Edit and Export Your Video as Usual:
Adobe standard dc. Begin by editing your video in iMovie as usual. When you finish the editing, export it in widescreen format.
This makes the video 16:9 aspect ratio.
Now, use Keynote to adjust the aspect ratios:
Imovie 9 Download
Launch Keynote and make a new slide by choosing the White theme:
Remove the default text inside the slide:
Next, drag and drop the video from iMovie onto this screen:
When the video is in, head to the top right corner and select Document. Choose Slide Size and from the drop-down menu, choose Custom Slide Size:
In the box, input the custom Width and Height numbers. For instance, say you want a1:1 square video, just input 1024 and 1024.
Do you want a different aspect ratio? Calculate those values using the online aspect ratio calculator.
Final step is to Export the video from Keynote:
Head to 'File' -> 'Export' and choose to export to QuickTime. In the popup window, input the export settings and click 'Next'. Ubuntu flash drive.
When the export is completed, use QuickTime to preview the final video.
3. How to use iMovie on iPad/iPhone to Change Aspect Ratio
Do you want to adjust the aspect ratio on your iPad or iPhone using iMovie? That option isn't available at the moment.
A video editing app like Filmorago is an alternative for the iPad and iPhone.
Although this app is free, there are in-app features available for purchase. This is one of the best video editing apps available and is compatible with Android and iOS.
With Filmorago you can produce subtitles and text, trim videos, speed up clips, insert overlays and filters, include audio etc. There are 2 aspect ratios available: 1:1 or 16:9. This means you are able to switch either from 1:1 or 16:9.
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Hey, My name is Paul – nice to e-meet you 🙂 I'm a freelance video editor who has over 4 years experiences of making all types of videos. I founded this website to provide step-by-step and easy-to-follow instructions to first-time editors or beginners like you who want to start their journey in video editing.
