How to Easily Open and Play MTS Video Files on Your Mac

You‘ve just transferred an important video from your camera to your Mac, eager to relive the memories. But when you double-click the file, you get an error message: "The document could not be opened. QuickTime Player does not support the file format." Ugh!

If the video is in MTS format, you‘ve run into a common issue. MTS is a high-definition video format used by many Sony and Panasonic HD camcorders. While great for recording crystal clear video, MTS files are not natively supported by Apple‘s QuickTime Player. Fortunately, there are simple workarounds that will have you watching your MTS videos on your Mac in no time.

In this article, I‘ll show you how to easily open and play MTS files on macOS using free and paid third-party apps. I‘ll also explain what exactly MTS files are, highlight the pros and cons of different playback methods, and share some tips for avoiding pesky incompatibility issues in the future. Let‘s dive in!

What Is an MTS File?

MTS stands for MPEG Transport Stream. It‘s a container format for storing high-definition digital video and audio. MTS is based on the AVCHD (Advanced Video Coding High Definition) standard, which was jointly developed by Sony and Panasonic.

Many Sony, Panasonic, and Canon HD camcorders record video in the MTS/AVCHD format. MTS is also sometimes used for high-def recordings from DVD and Blu-ray players. Compared to older standard-definition formats like AVI, MTS offers superior image quality and better compression. A minute of 1080p video takes up about 100MB in MTS format.

Why Doesn‘t QuickTime Support MTS?

Apple‘s QuickTime Player is a versatile media player, but it has limited compatibility with certain proprietary formats like MTS. Opening an MTS file in QuickTime results in the unsupported format error.

It‘s not that Macs physically can‘t play MTS files – it‘s that QuickTime doesn‘t contain the necessary codecs and plugins to decode the AVCHD data inside the MTS wrapper. With some help from third-party tools, your Mac can handle MTS files just fine.

The Easy Solution: Use an MTS-Compatible Media Player

The simplest way to watch an MTS video on your Mac is to use a media player with built-in support for the MTS format. There are a number of great free and paid options. Let‘s look at a few of the best:

Elmedia Player

Elmedia Player is a free, easy-to-use media player for Mac that can handle virtually any video format, including MTS. It offers smooth HD playback, customizable subtitles, and streaming to TVs and other devices. Here‘s how to use it:

1. Download Elmedia Player from the App Store or the developer‘s website.
2. Install the app and open it.
3. Click File > Open in the menu bar (or press Command+O).
4. Navigate to your MTS file and click Open.
5. Press the Play button in the bottom left to start watching!

[Include screenshot of Elmedia Player interface]

Elmedia Player also has a Pro version with advanced features like ad-free playback, video downloading, and hardware acceleration. But for simply viewing an MTS file, the free version works great.

VLC

VLC is a popular open-source media player that‘s free, powerful, and works across platforms. It uses its own codecs to play almost any video or audio format, including MTS. To open an MTS file in VLC on Mac:

1. Download VLC for Mac from the official site: https://www.videolan.org/vlc/download-macosx.html
2. Open the downloaded DMG file and drag the VLC app icon to your Applications folder.
3. Launch VLC, then click File > Open File (or press Command+O).
4. Select your MTS file and click Open.
5. The video should start playing automatically. Use the playback controls at the bottom.

[VLC screenshot]

VLC is beloved by millions for its versatility and reliability. It‘s a solid choice if you frequently work with obscure video formats.

5KPlayer

5KPlayer is another robust free media player that supports the MTS format. In addition to HD video playback, it lets you stream video to your TV, download online videos, and even record your screen. To use it:

1. Download 5KPlayer for Mac from https://www.5kplayer.com/
2. Open the installation package and follow the prompts.
3. Launch 5KPlayer and click File > Open File(s).
4. Choose your MTS file and click Open.
5. Click the Play button to begin watching.

[5KPlayer screenshot]

5KPlayer has a sleek, modern interface and supports a huge range of video, audio, and subtitle formats. The built-in AirPlay sender is a handy bonus.

Converting MTS to a Different Format

If you‘d prefer to convert your MTS file to a format that QuickTime or other apps can read, you can use a video converter tool. This is useful if you want to import the MTS video into an editor like iMovie or Final Cut Pro. It also saves space, as the converted file will likely be smaller than the original MTS.

There are countless video converters out there, but here are a couple trustworthy ones for Mac:

HandBrake

HandBrake is a free, open-source app that can transcode MTS to MP4, MOV, or WebM format. The process is a bit technical but still accessible to the average user:

1. Download HandBrake for Mac: https://handbrake.fr/downloads.php
2. Install the DMG file and open HandBrake.
3. Click Open Source, navigate to your MTS file, and click Open.
4. Choose one of the presets from the sidebar, like "Fast 1080p30."
5. Click Browse next to "Save As" and choose a destination for the output file.
6. Click Start Encode. Once it finishes, you‘ll have a QuickTime-friendly version of your video.

[Screenshot of HandBrake]

HandBrake offers lots of advanced options for tweaking your output settings, but the defaults work well for most users. Expect some quality loss compared to the original MTS, but it shouldn‘t be too noticeable.

Permute

Permute is a simple, slick video and audio converter for Mac. It makes quick work of transcoding MTS files:

1. Buy and download Permute from the App Store ($14.99) or as part of a Setapp subscription ($9.99/month).
2. Launch the app and drag your MTS file into the Permute window.
3. Click the Format dropdown and choose a target format like MP4.
4. Select an output folder below the file list.
5. Click the Start button. Permute will convert your file to the selected format.

[Permute screenshot]

While not free, Permute stands out for its delightful ease of use. It also includes simple trim, merge, and effects tools. If you convert a lot of media files, it‘s well worth the modest price.

Tips for Smoother MTS Playback

Whichever method you choose, here are some tips to get the best performance when viewing MTS files on your Mac:

• Make sure your Mac meets the system requirements for the app you‘re using. 4K MTS files in particular can be resource-intensive.
• Close any unnecessary background apps to free up memory and CPU power.
• If streaming the video over your home network, connect your Mac via Ethernet instead of Wi-Fi if possible.
• Try tweaking your player‘s settings (e.g. disabling deinterlacing or hardware acceleration) if you encounter choppy playback or other glitches.
• Consider upgrading your Mac‘s RAM or switching to an SSD if it struggles with HD video playback.

Avoiding MTS Headaches in the Future

If you want to steer clear of incompatibility issues going forward, you have a couple options:

1. Change your camera‘s recording settings to AVC or MP4 instead of AVCHD/MTS. This will result in slightly lower image quality but much better compatibility. Check your camera‘s manual for how to change the recording mode.

2. Copy the MTS files from your camera to an external hard drive, then immediately transcode them to a Mac-friendly format using a tool like HandBrake. Once you‘ve verified the converted files look good, you can delete the MTS originals. Yes, it‘s an extra step, but it saves the hassle of finding a compatible player in the future.

The Bottom Line

While dealing with an unfamiliar video format like MTS can be frustrating, there‘s almost always a solution. For quick and easy playback on your Mac, a free media player like VLC or Elmedia is your best bet. If you need to edit the video or reduce the file size, a converter app like HandBrake or Permute can transcode MTS to a more flexible format.

Really, it comes down to how often you work with MTS files and how much time and effort you‘re willing to invest in the process. Whichever route you choose, you‘ll be reliving those precious video memories in no time!