Transcode Sony Alpha a7S AVCHD for easier use in iMovie

How do yo work with Sony Alpha a7S AVCHD MTS files in iMovie for Mac? For those who are looking for a smooth workflow between Sony Alpha a7S AVCHD footage and iMovie, this guide may shed you some light. It displays a way of re-encoding Sony Alpha a7S AVCHD recordings to Apple InterMediate Codec encoded QuickTime MOV format for use in iMovie fluidly.

"Suddenly, all my Sony Alpha a7S AVCHD mts clips have no audio in iMovie after the upgradation to macOS High Sierra...?? I believe this problem happened before and there's a quick fix for it but I can't remember what exactly. It's not missing the audio tracks or has any warning signs, the audio tracks are all there as they were before, just no sound. Does anyone have the same issue? How do you fix it?"

This is a known issue between iMovie and macOS High Sierra. It can be solved via transcoding Sony Alpha a7S AVCHD mts clips to Apple InterMediate Codec. Check a guide on how to do this below.

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How to transcode Sony Alpha a7S AVCHD .mts files to AIC .mov for iMovie editing?

To transcode Sony Alpha a7S AVCHD .mts video clips to AIC .mov for iMovie editing, do as below:

Video Converter (It is available for Mac, simply download the proper version depending on your computer.)

Step 1: Add Sony Alpha a7S AVCHD footage. Run Video Converter for Mac, and click "Add File" to load Sony Alpha a7S AVCHD MTS files into this program.

Step 2: Select output format for iMovie from "Profile" list Click "Profile" to select {{export.win.select-profile-steps}} as output format. AIC .mov is iMovie's favorite editing codec, which iMovie will recognize and handle well.

Tips: 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.

Step 3: Start encoding Sony Alpha a7S AVCHD files for iMovie editing. When ready, Click "Convert" to start Sony Alpha a7S 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.