“I’m a travel enthusiast. I keen on capturing beautiful scenes with my Sony camcorder. Now, I have a problem that I want to edit my Sony video on Mac computer. When I loaded the video into iMovie, the iMovie can’t open it. So, what’s the reason and how to solve this problem? Anyone can introduce me an AVCHD Converter on macOS?” Bob

AVCHD (Advanced Video Codec High Definition) is a popular and default video format for many camcorders, such as Canon, Sony, Panasonic camcorders. This file format is generated through digital or HD cameras in the form of the .mts file extension.

It uses the MPEG-4 AVC/H.264 standard, supporting a variety of standard, high definition, and stereoscopic (3D) video resolutions. Due to this feature, AVCHD cannot be played on most devices: the computer, iOS/Android phones, DVDs, Apple TV, PSP / PS3, Xbox 360, iRiver and other external players.

How to solve the problem? Here are 2 ways.

  1. The reason the device mentioned above cannot play AVCHD is the lack of AVCHD video decoding. In other words, we just need to find video playback software that can interpret AVCHD. For example, VLC player or Aiseesoft Blu-ray Player. [If you use macOS 10.8 (Mountain Lion) or later, then the supplied QuickTime Player can play AVCHD files too.]
  2. If you want to play AVCHD on your phone or edit AVCHD with iMovie, a better option is to convert AVCHD to a format compatible with these devices, such as MP4, MKV, MOV or other wanted formats…

In the next part, I will mainly focus on the second way. Here is the detail information about convert AVCHD to any video format on Mac. Keep reading to find more information.

How to Convert AVCHD with the Best AVCHD Video Converter for Mac

First of all, we need to transfer the AVCHD video from the camcorder to the Mac computer.

Step 1 Connect the configured data cable of the camera to the USB interface of the computer.

Step 2 Then turn on the camera power switch.

Step 3 You will see the USB mode words on the camera display. Wait for a second, after the successful connection, click the camera memory card on the computer. Find the PRIVATE folder and select the AVCHD folder.

Step 4 Just copy the required information in the AVCHD folder to your computer.

By the way, some camcorder record AVCHD files to a removable memory card, you need to access AVCHD video files via a card reader, it’s like reading a USB drive on a computer.

Second, in order to convert ACVHD, the AVCHD video converter is necessary. I want to recommend 2 AVCHD video conversion software for you.

Aiseesoft Video Converter Ultimate can convert AVCHD files to MP4/MOV/MKV and other video formats. Of course, except AVCHD, it also can convert MP4, MOV, MKV, AVI, MP3, FLAC to other video/audio formats. In other words, it can customize optimized presets for iPhone/iPad/Android phones, Mac/Windows computer.

  • It also provides a 30X faster conversion speed than any conventional converter.
  • As a photographer, Video post-processing is a common operation. This software can help us edit AVCHD files with cropping, trimming, cutting, merging, adding subtitles/watermarks, etc.
  • Supported OS: Windows 10/8/7/XP/Vista, Mac OS 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.

Online converter doesn’t need to be downloaded. As its’ name implies, we only need to upload AVCHD files online and then convert it. It supports a maximum of 200MB video loaded, you can transfer AVCHD from your computer or through a link
Comparison of two software:

Aiseesoft Video ConverterOnline Converter
Size Limitno limitmaximum file size support is 200MB
Download the softwareyesno
Internet Requirementcan be used with or without networkneed to be used with internet
Converted Output Destinationstore directly on your computerneed to be downloaded from the internet
Edit functionscrop, trim, cut, merge, add subtitles/watermarks, etc.can’t edit video

Every coin has two sides, my opinion is that if your file size is small and you only need to convert the AVCHD format, then Online converter is a good choice. But if you have high requirements for the output AVCHD video, Aiseesoft Video Converter Ultimate will be a better choice. It’s totally clean without a virus.

Third, let’s see steps to convert AVCHD to other formats on Mac.

Step 1: Free download Aiseesoft Video Converter Ultimate, install and run it, a clear interface will pop up on the Mac.

Step 2: Upload AVCHD files. You can simply drag and drop the AVCHD files to this program or click the Add File button to upload them.

Step 3: Define the output format. Click Profile drop-down button and select the output format. Here, MP4 is recommended, it can be compatible with most devices.

Step 4: Click the Edit button on the top toolbar. In the pop-up window, you can modify your video, like trim or crop, add special effects, add watermark, add subtitles, etc.

Step 5: Complete AVCHD conversion. Just click the Convert button. This software will automatically convert AVCHD for you. After a little while, you will get the converted file. And then, click the Open File button and you will see the converted file.