Convert MTS to MP4 Online
Complex folder structure (BDMV/STREAM) makes it confusing to manage files; most editors prefer converting to MP4 first. Converting to MP4 gives you a key advantage: universal playback support — every browser, phone, smart tv, and streaming platform handles mp4 natively. MP4 is best for streaming and sharing video online with the widest possible device and platform compatibility.
Why Convert MTS to MP4?
Complex folder structure (BDMV/STREAM) makes it confusing to manage files; most editors prefer converting to MP4 first — converting to MP4 overcomes this by providing universal playback support — every browser, phone, smart tv, and streaming platform handles mp4 natively
MP4 is the right choice when you need to: uploading videos to youtube, tiktok, instagram, and other social platforms
Gain broader compatibility — MP4 works with Every modern device: browsers, iOS, Android, Windows, macOS, smart TVs, game consoles, streaming platforms
Your MTS files were created for converting avchd recordings to mp4 for youtube upload, but now you need a format suited to different workflows
MTS vs MP4 — Format Comparison
AVCHD MPEG Transport Stream (.mts)
MPEG-4 Part 14 (.mp4)
How to Convert MTS to MP4
Upload your MTS file
Drag your .mts file onto the upload area or click to browse. We accept MTS files up to 2 GB.
Choose MP4 as output format
Select .mp4 (MPEG-4 Part 14) from the format list. Adjust quality settings if needed — higher quality means larger file size.
Convert and download
Click Convert and wait for processing. Your MP4 file will be ready to download in seconds. The result is optimized for streaming and sharing video online with the widest possible device and platform compatibility.
Frequently Asked Questions
Does converting between MTS and MP4 degrade quality?
expand_more
Each lossy re-encoding can introduce additional artifacts. For best results, start from the highest-quality source available. MP4's advantage is: universal playback support — every browser, phone, smart tv, and streaming platform handles mp4 natively.
How large will my MP4 file be compared to the original MTS?
expand_more
MTS files are typically 500 MB – 10 GB, while MP4 files are typically 10 MB – 5 GB. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted MP4 file?
expand_more
MP4 is compatible with: Every modern device: browsers, iOS, Android, Windows, macOS, smart TVs, game consoles, streaming platforms.
What is the maximum file size I can convert?
expand_more
PureConverter accepts MTS files up to 2 GB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between MTS and MP4?
expand_more
MTS (AVCHD MPEG Transport Stream) is best for importing high-definition camcorder footage recorded in the avchd format. MP4 (MPEG-4 Part 14) is best for streaming and sharing video online with the widest possible device and platform compatibility. Key tradeoff: MTS's advantage is records h.264 hd video with dolby digital audio directly to sd cards and internal memory in consumer camcorders, while MP4's advantage is universal playback support — every browser, phone, smart tv, and streaming platform handles mp4 natively.
Pro Tips for MTS to MP4 Conversion
For the best MP4 quality, start with the highest-resolution MTS source available — lossy compression works better with more data to analyze
Keep a backup of your original MTS file — while our conversion is reliable, having the source is always recommended
MP4 works especially well for: recording screen captures and webcam videos for tutorials and presentations
Did you know? MP4 is technically a container format, not a codec — the same .mp4 file could contain H.264, H.265, AV1, or even MPEG-2 video, which is why some MP4 files won't play on older devices.
Ready to Convert?
Upload your MTS file above and get your MP4 in seconds. Free, fast, and secure.