MPEG to M2TS Converter

Convert MPEG to M2TS: What This Tutorial Covers

This walks you through turning an .mpeg program stream into an .m2ts transport-stream file — the container Blu-ray and AVCHD camcorders use. It also covers the one setting most people get wrong: the audio codec, which decides whether your M2TS actually plays on a set-top Blu-ray player or just sits there as an unplayable file.

How to Convert MPEG to M2TS

1. Upload Your MPEG File: Drag and drop your .mpeg or .mpg file onto the page, or click "+ Add Files." You can queue several clips and convert them with the same settings.
2. Set the Video Codec to H.264: Open Advanced Options and, under Video Codec, pick H.264 — the codec AVCHD and most Blu-ray players expect. MPEG-2 also works for Blu-ray but produces larger files.
3. Set the Audio Codec to AC3: Under Audio Codec, choose AC3 (Dolby Digital). This is the step that makes the file disc-compatible; leaving audio as AAC produces an M2TS that many hardware players reject.
4. Convert and Download: Click Convert and download your .m2ts file. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. No sign-up, no watermark.

Walk-through: Choosing Codecs for a Playable M2TS

M2TS is the BDAV MPEG-2 Transport Stream container. The wrapper is the easy part — what determines playback is the audio and video inside it. The Blu-ray spec mandates H.262/MPEG-2, H.264/AVC, or VC-1 for video and Dolby Digital (AC-3), DTS, or Linear PCM for audio. AVCHD camcorder hardware is stricter still: H.264 video plus AC-3 or LPCM audio only.

The catch with online converters, this one included, is that the default audio codec for .m2ts output is often AAC, which is not on that mandatory list. The file will be a valid M2TS and will play fine in VLC or MPC-HC on a computer, but a standalone Blu-ray player or a TV's USB port may refuse it. Match your output to the device:

• For a Blu-ray player or AVCHD camcorder workflow: Video Codec = H.264, Audio Codec = AC3.
• For PS5 / PS4 USB playback or a smart TV: H.264 + AC3 is the safest pairing; some TVs also accept AAC, but AC-3 is the more universal choice.
• For computer playback only (VLC, MPC-HC, PotPlayer): the defaults are fine — those players decode AAC and H.264 without complaint.

Here is the same information as a checklist against the disc specs:

If your source is standard-definition .mpeg (typically 480i/576i from a DVD or capture card), converting to M2TS does not make it true HD. Upscaling 720×480 to a 1920×1080 preset stretches the picture; it does not add detail. Keep the resolution at its original value unless you have a specific reason to resize.

Common Errors and How to Fix Them

• "M2TS won't play on my Blu-ray player" — The audio is almost always AAC. Re-convert with Audio Codec set to AC3. If video is MPEG-4/Xvid, switch it to H.264 too.
• "No sound on my TV but video plays" — The player decoded the H.264 video but not the audio stream. AC-3 (Dolby Digital) is the broadly supported choice.
• "File plays on PC but not on a hardware player" — PC players are codec-permissive; hardware players follow the Blu-ray spec strictly. Use H.264 + AC3 for hardware.
• "I burned the .m2ts to a disc and it won't load" — A bare .m2ts file is not a finished Blu-ray. Discs need the full BDMV/STREAM/ folder structure, which authoring software (not a file converter) creates.
• "Output looks soft after converting SD footage" — You scaled an SD source up to an HD preset. Keep the resolution at Keep original; converters cannot invent detail that was never recorded.

Program Stream vs Transport Stream

.mpeg and .m2ts both come from the MPEG-2 systems layer, but they are the two halves of it, built for opposite delivery conditions. That is the whole reason this conversion exists.

When This Doesn't Work

Authoring a real, menu-driven Blu-ray or AVCHD disc is beyond a single-file conversion — you need software that builds the BDMV directory tree and an index. This tool gives you a spec-compatible stream to feed into that software, not a burnable disc image. Likewise, M2TS files ripped from commercial Blu-rays are AACS-encrypted; converting an already-decrypted stream is fine, but this tool does not strip copy protection. For plain playback or editing where Blu-ray compatibility is irrelevant, convert M2TS to MP4 instead — MP4 is far more widely supported.

Frequently Asked Questions

Why does my M2TS file not play on a Blu-ray player?

Almost always the audio codec. The Blu-ray and AVCHD specs require Dolby Digital (AC-3), DTS, or Linear PCM audio, but many converters default .m2ts output to AAC. Re-convert with the Audio Codec set to AC3, and set the Video Codec to H.264, and the file will satisfy the hardware spec.

Should I pick AC3 or AAC audio for M2TS?

Pick AC3 if the file is destined for a Blu-ray player, AVCHD camcorder, PS5/PS4, or a TV's USB input — AC-3 (Dolby Digital) is on the mandatory codec list those devices follow. AAC is fine only if you will play the file on a computer with VLC, MPC-HC, or a similar codec-flexible player.

Does converting MPEG to M2TS make my video HD?

No. If your .mpeg is standard-definition (for example 720×480 from a DVD or capture card), the M2TS keeps that resolution. Choosing a 1080p preset stretches the picture without adding real detail. In our testing, an SD MPEG scaled to a 1080p M2TS looked softer than the original, not sharper — keep the resolution at its original value for the cleanest result.

Is an M2TS file the same as a finished Blu-ray disc?

No. M2TS is just the stream file. A playable Blu-ray needs the full BDMV/STREAM/ folder structure plus index and playlist files, which dedicated authoring software builds. This converter produces the spec-compatible stream you then feed into that authoring step.

What is the difference between M2TS and MTS?

They are the same BDAV transport-stream container with different filename conventions. Blu-ray discs use long filenames and the .m2ts extension; AVCHD camcorders use the legacy 8.3 naming scheme and write .MTS. The bytes inside are compatible — if you need the camcorder-style extension, convert MPEG to MTS instead.

Which video codec should I choose for Blu-ray compatibility?

H.264 (AVC) is the safest choice and is accepted by both Blu-ray players and AVCHD hardware. MPEG-2 is also Blu-ray-legal but produces noticeably larger files at the same quality. Avoid MPEG-4/Xvid, VP9, or AV1 for disc-bound files — those are not on the Blu-ray mandatory list.

What is the actual difference between an MPEG program stream and an M2TS transport stream?

They are the two delivery modes MPEG-2 Systems defines. A program stream, which is what a .mpeg or .mpg file usually holds, assumes the storage underneath it is reliable, so it uses long variable-length packs and carries a single programme. A transport stream chops everything into fixed 188-byte packets so a decoder can resynchronise after an error, which is what broadcast and disc playback need; the BDAV flavour Blu-ray and AVCHD use adds a 4-byte arrival timestamp in front of each packet, making them 192 bytes. Converting one to the other repackages the media for hardware that only understands the transport form — it does not improve the picture.

Why did my M2TS come out a different size from the MPEG?

Two things pull in opposite directions. Re-encoding an MPEG-2 source to H.264 at a similar quality usually makes the file substantially smaller, because H.264 is the far more efficient codec — that is normally the dominant effect. Pushing back the other way, transport-stream packetisation adds a few percent of overhead that a program stream does not carry, and a high Quality Preset or a generous bitrate can easily outweigh the codec saving. If you need a specific size, set a target rather than guessing from the source file.

How long do you keep my uploaded files?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark, and your files are never shared or made public.