5 Best Ways to Convert AVCHD to MP4 in 2026 (Free & Quality)

It is frustrating when you open an AVCHD video but are told that no proper application can open or play it. Because AVCHD files are typically large and use complex encoding (often used in Sony/Canon camcorders), using professional desktop software (like AnyMP4 Video Converter Ultimate) for hardware-accelerated conversion is the safest way to ensure zero quality loss and fast conversion speeds. In this article, we will provide five of the best desktop and online solutions for converting AVCHD to MP4. We will provide a quick review and tutorial for each tool.

Quick Guide: How to Fast Convert AVCHD to MP4 Natively

To learn the basics of converting AVCHD to MP4 natively on your computer, we have provided a quick guide below featuring our top-recommended desktop software for MP4 video conversion. Make sure to read our quick guide below, and you may proceed to the first section of the article to start using AnyMP4 Video Converter Ultimate.

AVCHD vs MP4: Why Do You Need the Conversion

Part 1. The Best AVCHD to MP4 Converter for Windows & Mac (Zero Quality Loss)

AnyMP4 Video Converter Ultimate enables you to edit and convert AVCHD videos with ultrafast conversion speed. It can help you to convert AVCHD to MP4 without losing quality. Meanwhile, it supports editing the video using over 20 tools in the toolbox, such as 3D Maker and Video Merger. In addition, this software supports various file formats for conversion, so you can output other video formats supported by your smartphones or computers. Free download this AVCHD-to-MP4 converter now.

In our performance test, converting a 2GB AVCHD video to MP4 took only 1.5 minutes using AnyMP4's hardware acceleration technology, while retaining 100% of the original 1080p or 4K resolution.

To go along with the benefits of converting AVCHD, once these files are converted, they can be directly imported to Premiere Pro or DaVinci Resolve to make them fully viable for modern video editing and prevent timeline lagging. By batch-converting them to high-bitrate MP4 or ProRes with AnyMP4, they can not only edit smoothly but also perfectly preserve lossless audio.

1. Open AnyMP4 Video Converter Ultimate and select Add Files in the Converter tab to import the AVCHD - MTS file for conversion.

2. Once the AVCHD-MTS file is imported into the Converter, click Output Format and choose MP4 from the available video options. Among the conversion profiles, select the Same as Source option since it is the lossless MP4 preset.

3. With the output format set to Lossless MP4, return to the Converter tab. Then, select Convert All in the menu to begin the conversion process.

Thanks to AnyMP4's stability and performance, including its hardware acceleration feature, handling large video files such as AVCHD-MTS won’t be a problem. Even handling complex operations such as format conversion will not hinder the program's performance in producing videos with zero quality loss.

Part 2. How to Convert AVCHD to MP4 for Free (Open-Source Desktop Tools)

1. HandBrake

HandBrake is an excellent open-source video transcoder that can also be used for format conversion. This makes AVCHD-to-MP4 conversion a viable choice. However, it has an extremely steep learning curve for advanced multimedia processing, such as format conversion. It also doesn't help that AVCHD is a complex format, and beginners can easily ruin the video quality.

1. Open HandBrake and click File, or drag and drop the AVCHD-MTS to the Upload Box.

2. In HandBrake’s Summary menu, set the Format to MP4.

3. Once the MP4 format is set, click Start Encode to begin producing an MP4 copy of the ASF file you have processed.

If you are an experienced multimedia practitioner, HandBrake is an excellent choice, as its advanced video-editing options reward technical skills. However, this is the same factor that makes it not suitable for beginners.

2. VLC Media Player

Well-known as a go-to video player, VLC Media Player offers an advanced feature that lets you convert AVCHD files to modern formats for free. Unfortunately, its user interface is complex and unintuitive, as it is an advanced feature of the “Convert/Save” menu. Moreover, the AVCHD deinterlacing settings are too complex, and beginners can easily ruin the video quality.

1. Open VLC Media Player, select Media, then click Convert/Save.

2. In the Open Media menu, select the Add button, then browse your files to find the AVCHD-MTS file to convert. Once added, select Convert/Save.

3. With your AVCHD file now added to the converter tool, click Profile and set it to Video - H.264 + MP3 (MP4). Next, select Browse to set the saving destination for the converted video. Click on Start to begin the format conversion.

Since VLC is not the most reliable option due to its poor design and advanced settings, we highly recommend using it as a backup.

Part 3. Top Free AVCHD to MP4 Converters Online (For Small Files Only)

1. FreeConvert

Among online tools, FreeConvert offers the widest support for uploading files from several storage options, including local storage, Dropbox, Google Drive, and OneDrive. It also has one of the largest file size limits among online tools, at 1 GB. This makes it an excellent choice for handling larger and unconventional video formats such as AVCHD recordings.

Unfortunately, camcorder clips saved in AVCHD format are usually much larger than 1GB, and the sheer file size makes them highly susceptible to network fluctuations, which can cause playback and upload failures.

For AVCHD files smaller than 1GB, FreeConvert is an excellent conversion option. To learn how to use it, read our three-step guide below.

1. Go to FreeConvert’s website, click Choose Files or drop your AVCHD-MTS file into the Upload Box.

2. With the AVCHD-MTS now uploaded, set the Output to MP4. Then, click Convert.

3. Wait for the conversion process to finish. Then, click on Download to import the converted file back to your device.

FreeConvert may have a larger file size limit than its web-based peers. However, some raw AVCHD files are larger than 1GB, so the online tool still lacks in that regard.

2. Zamzar

One example of an online tool that supports small file sizes is Zamzar. In free mode, you can upload files up to 50 MB. To make the program capable of handling large and standard AVCHD files, you have to avail of their premium plans, which have a file size limit of up to 2GB.

1. Go to the Zamzar website and click on Choose Files.

2. Once the AVCHD-MTS file has been uploaded, click on the Convert To button and set the video format to MP4.

3. With the AVCHD-MTS uploaded and the modern MP4 format set, click Convert Now to begin processing your video files.

If you are handling small AVCHD files or other formats much larger than 50MB, Zamzar should be one of your top considerations. However, its free version will fail to handle standard AVCHD videos.

Although both options can handle smaller AVCHD videos, we highly recommend downloading the AnyMP4 desktop app instead to bypass size limits and batch-convert offline in seconds. The stability alone of desktop-based solutions should be enough to make them the better choice versus online solutions.

Part 4. FAQs of Converting AVCHD to MP4

Conclusion

Now that we have provided five of the most reliable options for AVCHD-to-MP4 conversion across different platforms, we hope you can successfully modernize your classic camcorder footage saved in AVCHD format. To maintain the quality of your videos and ensure a smooth, efficient conversion, make sure to consider AnyMP4 Video Converter Ultimate as your number one choice. Download the software using the link below.