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As part of the transition from 32-bit to 64-bit technology in macOS, you might see an alert in Final Cut Pro or Motion about legacy media files that won't be compatible with macOS Catalina.
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. Mar 17, 2020 Alerts in iMovie and Final Cut Pro indicate that legacy media files won't be compatible with macOS Catalina, and users can detect and convert those files natively before system update. However, there are masses who fail to notice that alert before updating, and end up here eager to find a trustworthy converter tool to help transcode buntch of.
Before you upgrade to macOS Catalina, you can use Final Cut Pro 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 any new media files you create are compatible with macOS Catalina, use cameras and media formats supported by Final Cut Pro, and use media formats supported by Motion.
When trying to play incompatible media in macOS Catalina, you might see an incompatible media message in the viewer if you haven't converted the media before upgrading to macOS Catalina.
Detect and convert incompatible media files in Final Cut Pro in macOS Mojave
When you import media or open a library in Final Cut Pro 10.4.7 or later in macOS Mojave 10.14.6, a window appears that lists any incompatible media files.
To convert incompatible media files immediately, click Convert in the window. Final Cut Pro creates copies of the media files in the Apple ProRes format, places them in the library’s current media storage location, and relinks clips in the library to the converted files.
If you choose Cancel, you can resume scanning the library and convert the incompatible files at any time in macOS Mojave:
- In Final Cut Pro, choose File > Check Media for Compatibility.
- In the window listing incompatible media files, click Convert.
Learn more about how Final Cut Pro detects and converts incompatible media files.
To convert incompatible media files detected in Motion and Compressor in macOS Mojave, use QuickTime Player to convert single files, or use Compressor to convert multiple files at once.
Manually identify the format of clips
You can also use Final Cut Pro to manually identify the format or codec of any clip in your library:
- If the browser is not already in list view, click in the top-right corner of the browser, or choose View > Browser > Toggle Filmstrip/List View.
- Control-click any column heading in the browser, then choose Codecs in the list.
- Scroll the browser left or right to see the Codecs column.
- To sort clips by codec, click the Codecs column heading.
If you created optimized media
When you create optimized media, Final Cut Pro makes copies of the original files in the Apple ProRes 422 format. These copies will be compatible with macOS Catalina. If you created optimized media, you should still convert the original files for future compatibility. When you convert the files, they will be in the same ProRes 422 format as the optimized media.
If your Final Cut Pro library contains Motion projects with incompatible media files
Final Cut Pro won't detect incompatible media used in Motion projects. To see if a Motion project uses incompatible Media, open it in Motion. A message will appear if incompatible media is detected. If incompatible media is present, you can use QuickTime Player or Compressor to convert incompatible media in the Motion project in macOS Mojave.
Convert incompatible media in Compressor
In macOS Mojave, you can use Compressor to transcode one or more media files into a supported format such as Apple ProRes, which preserves image quality and provides the best performance when editing in Final Cut Pro.
In macOS Catalina, you can't convert incompatible media with Compressor.
Convert incompatible media in QuickTime Player
You can also convert incompatible media files in macOS Mojave by opening them with QuickTime Player (version 10.0 and later), then saving a copy with a new name. Versions of macOS after macOS Mojave will no longer support this method.
In macOS Catalina, you can't convert incompatible media with QuickTime Player.
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Formats compatible with macOS Catalina
These video, audio, still-image, and container formats don't rely on the QuickTime 7 framework, and are compatible with Final Cut Pro, Motion, and Compressor in macOS Catalina:
Video Formats
- Apple Animation codec
- Apple Intermediate codec
- Apple ProRes
- Apple ProRes RAW
- AVCHD (including AVCCAM, AVCHD Lite, and NXCAM)
- AVC-ULTRA (including AVC-LongG, AVC-Intra Class 50/100/200/4:4:4, and AVC-Intra LT)
- Canon Cinema RAW Light2
- DV (including DVCAM, DVCPRO, and DVCPRO50)
- DVCPRO HD
- H.264
- HDV
- HEVC (H.265)
- iFrame
- Motion JPEG (OpenDML only)
- MPEG-4 SP
- MPEG IMX (D-10)
- Photo JPEG
- REDCODE RAW2
- Uncompressed 8-bit 4:2:2
- Uncompressed 10-bit 4:2:2
- Uncompressed 10-bit 'R10k'
- XAVC (including XAVC-S)
- XDCAM HD/EX/HD422
- XF-AVC
Audio Formats
Still-image formats
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Container formats
2 These formats are supported in Final Cut Pro and require additional software from the camera manufacturers.
Media formats affected by the transition to 64-bit technology
In macOS versions up to and including macOS Mojave, third-party software has extended the QuickTime 7 framework to support many incompatible media formats. In macOS Catalina, the QuickTime 7 framework will no longer be available, so incompatible formats won't be supported in Final Cut Pro, Motion and Compressor.
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 examples of media formats affected by this transition:
- 3ivx MPEG-4
- AV1 / VP9
- AVC0 Media AVA0 Media
- Avid DNxHD / DNxHR
- Avid DV / DV100 / JFIF / Motion JPEG
- Avid Meridien / 1:1x / Packed / RGBPacked
- BitJazz SheerVideo
- CineForm
- Cinepak
- DivX
- Flash Video
- FlashPix
- FLC
- GlueTools codecs for Cineon/DPX, Phantom Cine, ARRIRAW, Uncompressed RGB
- 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 (such as Microsoft MPEG-4, DivX, 3ivx, VP6, and VP3)
- Pixlet
- Planar RGB
- QuickTime files encoded using still image formats (sgi, tga, png and others)
- RealVideo
- REDCODE QuickTime Decoder (.mov)
- SGI
- Sony HDCAM-SR (SStP)
- Sorenson 3
- Sorenson Spark
- Sorenson Video / Video 3 / YUV9
- Streambox ACT-L2
- Windows Media Video 7, 8, 9
- Xiph.org’s Theora Video
- ZyGoVideo
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When macOS Mojave was announced, Apple warned that it would be the last version of macOS that would support older 32-bit apps. Apple has been phasing out 32-bit apps for the last 10 years and is now ready to take the final step, even if Mac users may not be ready to lose access to older apps.
With the release of macOS Catalina, 32-bit app support is no longer available, which means many of your older apps will no longer work if they haven't been updated to 64-bit.
32-bit vs. 64-bit
32-bit apps date back to a time when there were 32-bit processors and 32-bit operating systems, but are now outdated. Apple has long since transitioned to 64-bit processors and macOS has been 64-bit since the launch of Snow Leopard in 2009.
Compared to 32-bit apps, 64-bit apps can take advantage of more memory and offer faster system performance. Apple technologies like Metal only work with 64-bit apps, and for Apple to ensure that Mac apps include all of the latest advancements and optimizations, support for 32-bit needs to end. In the simplest terms, 32-bit apps are inefficient.
32-bit apps can run on a 64-bit system as they've been doing for years, but Apple wants to get rid of outdated apps to make sure everything that runs on the Mac is properly optimized and isn't an unnecessary drain on system resources.
Previous Warnings
Apple started warning Mac users about plans to end support for 32-bit apps back with macOS High Sierra. In High Sierra, users started getting warnings about a 32-bit app's future incompatibility with macOS.
A similar message was available in macOS Mojave, and if you opened up a 32-bit app while running Mojave, you saw an alert letting you know a specific app wouldn't work with future versions of macOS unless it was updated.
Alerts re-appeared every 30 days when launching an app, with Apple aiming to make sure customers would not be caught unaware when a 32-bit app stopped working in the future, so you should already know if one of your frequently used apps hasn't been upgraded to 64-bit.
Upon updating to macOS Catalina, you'll be shown a list of 32-bit apps that no longer work on your system.
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How to Check if an App is 32-Bit or 64-Bit in macOS Mojave
To determine whether an app is 64-bit or 32-bit and to see if there are 32-bit apps installed on your machine before upgrading to macOS Catalina, follow these steps:
- Click the Apple symbol () in the menu bar on your Mac's desktop.
- Click on About This Mac.
- Choose 'System Report' at the bottom of the window.
- Scroll down to the Software list on the sidebar.
- Select Legacy Software.'
Anything in the list of Legacy Software applications is a 32-bit app and will not work when upgrading to macOS Catalina.
If Legacy Software isn't an option in the sidebar, select the Applications option and then check the list of apps at the right. The column that's labeled 64-bit will show a 'No' listing for apps that are 32-bit.
How to Prepare to Update to macOS Catalina
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The first step is to make sure there aren't already available updates for apps that you have on your system, which you can generally do by updating through the Mac App Store for Mac App Store apps.
Apps outside of the Mac App Store use other update methods that can vary by app, but for many, you can click on the app's name in the menu bar and choose the 'Check for Updates' option. Some other apps have more hidden update methods, so if you do have a 32-bit app, make sure to Google how to update it to be sure there's not already new software available.
After ensuring you've updated everything you're able to update, you can contact developers and ask them to update their apps, but if that doesn't pan out, the only other solution is to start the search for an alternative app if you're committed to upgrading to macOS Catalina or have already done so.
32-Bit App Warnings When Installing Catalina
When upgrading to macOS Catalina, the installer will show a list of recently used apps that are 32-bit so you know what to expect before installing.
After viewing this list, you can choose to either cancel or continue with the installation.
macOS Catalina also shows a stop symbol over the icon of 32-bit apps in the Finder, so you know that the app isn't going to open.
Aperture
With the release of macOS Catalina, Aperture is going to stop working. Apple warned Aperture users in April 2019 that the software won't run in future versions of macOS, starting with macOS Catalina.
If you're an Aperture user, you'll have to transition to alternate photo editing and management software, such as Adobe's Lightroom. Aperture is not 32-bit, but Apple is phasing it out all the same.
Affected Media Formats
Certain media files that use older formats and codecs are also not compatible with macOS after macOS Mojave due to the 64-bit transition, and you will need to convert some iMovie and Final Cut Pro X libraries. Incompatible media files were created using codecs that rely on QuickTime 7, and while macOS Mojave has QuickTime 7 frameworks, future versions of macOS will not.
Apple has a full list of media formats that are going to be affected by the transition available in a support document.
Continuing to Use 32-Bit Apps
In macOS Mojave and earlier versions of macOS like High Sierra, you can continue to use your 32-bit apps. If you have a 32-bit app that you absolutely depend on, you're going to want to think twice before upgrading to macOS Catalina.
Guide Feedback
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