Issues working with Sony A99 II AVCHD in iMovie

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How do yo work with Sony A99 II AVCHD MTS files in iMovie for Mac? For those who are looking for a smooth workflow between Sony A99 II AVCHD footage and iMovie, this guide may shed you some light. It displays a way of re-encoding Sony A99 II AVCHD recordings to Apple InterMediate Codec encoded QuickTime MOV format for use in iMovie fluidly.

How to transcode AVCHD mts files to ProRes for FCP X editing

“I’ve worked with Sony A99 II MTS files in many projects currently in iMovie. Now suddenly all those files in all those projects I’ve worked on have no audio. Like iMovie suddenly does not recognize the audio on them and they’re all completely silent with no audio. All these files had audio before, and all I can think of that changed is I did a few updates on my Mac and in the app store. Is there a fix for the issue?”

Current iMovie 10.1.8 and High Sierra does not convert the MTS files like it used to do in the past. Try converting the Sony A99 II MTS files to AIC .mov using the Video Converter for Mac.

How to transcode Sony A99 II AVCHD .mts files to AIC .mov for iMovie editing?

To transcode Sony A99 II AVCHD .mts video clips to AIC .mov for iMovie editing, do as below:

Video Converter For Mac , It is available for MacOSX 10.5 or above (including macOS Sierra/macOS High Sierra 10.13.14)
download Mac version

Step 1: Add Sony A99 II AVCHD footage.
Run Video Converter for Mac, and click “Add File” to load Sony A99 II AVCHD MTS files into this program.

import AVCHD MTS video files

Step 2: Select output format for iMovie from “Profile” list
Click “Profile” to select {{}} as output format. AIC .mov is iMovie’s favorite editing codec, which iMovie will recognize and handle well.
Select output profile format

If necessary, you can click “Settings” button to modify video and audio parameters like encoder, resolution, frame rate, bitrate, aspect ratio, sample rate, and audio channels. You can also “Enable 3D Settings” to add 3D effect to your source media.
Settings for AVCHD video files

Step 3: Start encoding Sony A99 II AVCHD files for iMovie editing.
When ready, Click “Convert” to start Sony A99 II AVCHD .mts to iMovie conversion. As soon as the conversion is complete, you can click “Open Folder” to get the generated AIC .mov files for editing in iMovie with optimum performance. Hope this helps solve your problem.

Also read:
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Posted in Convert video files for editing, Video format conversion.