DV to MTS Converter

Convert DV to MTS: What This Tutorial Covers

This is for anyone consolidating old DV or MiniDV tape captures into the same AVCHD project as their newer camcorder footage — the moment two camera generations meet in one timeline. MTS is the on-camcorder file for AVCHD, so wrapping a tape transfer as .mts lets it sit alongside clips from a Sony Handycam, Canon HF, or Panasonic HDC without your editor treating it as a foreign format. This guide also covers the honest limits: DV is standard-definition, so it stays SD inside the MTS, and DV's own compression means the H.264 re-encode is a second lossy pass — both worth understanding before you batch a whole shelf of tapes.

How to Convert DV to MTS

1. Upload Your DV File: Drag and drop the file onto the page or click "+ Add Files". A raw .dv stream captured over FireWire or a DV-AVI / DV-QuickTime wrapper all work, and you can queue several captures to run with the same settings.
2. Pick Video Codec and Quality Preset: The Video Codec for MTS output is H.264 — the codec the AVCHD specification requires. Leave the Preset on "Very High (Recommended)", or step it to Highest for an archival master. For finer control, switch File Compression to Specific File Size, Constant Bitrate, Variable Bitrate, or Constant Quality.
3. Set Audio Codec and Resolution (Optional): Audio Codec defaults to AAC; switch to AC3 (Dolby Digital) if the file is destined for AVCHD-folder ingest or Blu-ray authoring (see the walk-through). Under Video resolution, choose Keep original so the SD frame is preserved rather than stretched.
4. Convert and Download: Optionally set Trim to a Time Range to extract a segment, then click "Convert" and save your .mts. No sign-up, no watermark.

Walk-through: Getting a Clean MTS from a DV Tape Capture

The point of this conversion is workflow, not picture quality — you are not making the footage look better, you are making it drop into an AVCHD editing project cleanly. Three settings decide whether it lands right:

• Audio Codec — AC3 vs AAC. AVCHD specifies AC3 (Dolby Digital) or linear PCM, so if you plan to drop the file into a camcorder's BDMV/STREAM folder or feed an AVCHD-strict authoring tool, set Audio Codec to AC3. DV's source audio is uncompressed PCM (the standard mode is 16-bit stereo at 48 kHz, with an alternate 12-bit four-channel mode at 32 kHz), so a clean first-generation source feeds the AC3 encode. If you only need an H.264-in-MTS file for general playback, the AAC default is fine — it just is not part of the AVCHD spec, so some older authoring tools and standalone players reject it.
• Resolution — leave it on Keep original. DV is 720×480 (NTSC) or 720×576 (PAL). MTS can hold HD frames, but upscaling SD to 1080p only resamples the same detail into a bigger file; it never adds sharpness. Keep the native SD frame unless a specific tool refuses anything but a 1080p timeline.
• Bitrate — match what you actually need. DV records at roughly 25 Mbit/s using intraframe (frame-by-frame) compression. H.264 is interframe, so it reaches similar perceptual quality at a much lower bitrate, which is why the MTS is typically far smaller than the DV source. For SD content, Constant Quality around CRF 20-22 stays visually transparent; only push toward the AVCHD 1.0 ceiling (around 24 Mbit/s) if a tool demands spec compliance.

Common Errors and How to Fix Them

• "The picture looks soft / not really HD" — That is expected. DV is standard-definition and stays SD in the MTS; nothing can reconstruct detail the tape never recorded. Keep the original resolution rather than upscaling, which only inflates the file.
• "My authoring tool or camcorder folder rejects the audio" — It wants AC3. Re-run with Audio Codec set to AC3 (Dolby Digital) instead of the AAC default, which is not part of the AVCHD spec.
• "The output is silent" — Some DV captures drop the audio track during the tape transfer, so there is nothing to encode. Open the .dv in a player first; if it is silent there, the capture is the problem, not the conversion.
• "My file is .avi, not .dv" — Many FireWire captures land in a DV-AVI wrapper. This page accepts DV-AVI; an AVI using a non-DV codec is a different decode path.
• "The colors or motion look slightly worse than the tape" — DV is itself lossy (DCT intraframe compression), so the H.264 pass is a second lossy generation. There is no detail to regain from a re-encode; converting once from the cleanest available capture is the best you can do.

When This Doesn't Work

MTS only makes sense when you specifically need an AVCHD-style file — usually to match newer camcorder footage in one project, or to feed Blu-ray authoring. For everyday playback on phones, TVs, and the web, DV to MP4 is the better target, since MTS is hit-or-miss on iOS and many web players. If you only care about the soundtrack — an interview, a recital, a wedding toast — skip the video entirely and rescue bit-exact audio with DV to WAV. And truly damaged or partially overwritten DV captures may decode with dropouts or stop early; the only real fix is re-capturing the tape, because the damage lives in the source file.

Frequently Asked Questions

Will converting DV to MTS make my old footage HD?

No. DV is standard-definition — 720×480 (NTSC) or 720×576 (PAL) — and it stays that resolution inside the MTS. MTS can carry HD frames, but upscaling SD to 1080p only resamples the same picture into a larger file without adding real detail. The reason to convert is workflow compatibility, so a tape transfer sits in the same AVCHD project as footage from a newer camcorder; if you want broad playback instead, DV to MP4 is the more practical choice.

Should I pick AC3 or AAC for the audio?

AC3 (Dolby Digital) if the file is headed for an AVCHD camcorder folder or a Blu-ray authoring tool — AVCHD specifies AC3 or linear PCM, and AAC is not part of the spec, so some authoring tools and older players reject it. AAC if you only need an H.264-in-MTS file for general playback, where it is fine and slightly more efficient. The default here is AAC; switch to AC3 under Audio Codec for AVCHD-strict outputs. DV's source audio is uncompressed PCM, so either way you are encoding from a clean first-generation track.

Why is my converted MTS so much smaller than the DV file?

Because the two formats compress differently. DV uses intraframe (frame-by-frame) compression at roughly 25 Mbit/s, while MTS carries H.264, which is interframe and reaches similar perceptual quality at a much lower bitrate. So an SD clip that was several gigabytes as DV can become dramatically smaller as MTS at comparable quality. Keep in mind DV is itself lossy, so the H.264 pass is a second generation — the smaller size comes from better compression, not from discarding anything you would miss.

What is the difference between MTS and M2TS?

Both wrap the same H.264 plus AC3/LPCM payload in an MPEG-2 transport stream. MTS is what an AVCHD camcorder writes to its memory card. M2TS is the variant produced after importing through the camcorder's companion software for Blu-ray storage — it adds a small timestamp prefix to each transport packet for accurate seeking. This page outputs MTS, which is the right target for matching on-card camcorder footage.

Will the converted MTS play on my phone or smart TV?

Smart TVs from Samsung, LG, and Sony generally play MTS files from a USB drive. Phones are inconsistent: most Android players such as VLC and MX Player handle MTS, but iOS Files and the stock Photos app will not preview it. In our testing, a 3-minute 720×480 DV capture re-encoded to an H.264 MTS at CRF 21 came out around 70 MB, versus roughly 660 MB as raw DV. If you need reliable playback everywhere, convert to MP4 instead.

How are my files handled, and how long are they kept?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. A full DV reel runs about 25 Mbit/s and can be several gigabytes, so the practical limit is upload time rather than a per-file cap; trim to the part you need first to keep the upload small.