M2V to AV1 Converter

Convert M2V to AV1 Online

Re-encode legacy MPEG-2 video (.m2v) into a modern AV1 elementary stream to shrink the file dramatically at similar visual quality. AV1 is the Alliance for Open Media's royalty-free codec, and at a matched quality target it typically lands 30-50% smaller than HEVC and several times smaller than the MPEG-2 you started with. Both .m2v and a raw .av1 stream are video-only, so there is no audio on either side — if you want a playable file with sound, send the output to a container instead (see the FAQ below).

How to Convert M2V to AV1

1. Upload Your M2V File: Drag and drop your .m2v file onto the page or click "Add Files." You can queue several files and convert them in one batch.
2. Set the Quality Preset: Open Advanced Options and choose how AV1 controls bitrate — the default "Quality Preset" (Very High recommended) targets a quality level, or switch to Constant Quality, Constant Bitrate, Variable Bitrate, or Specific file size for tighter control over the output size.
3. Adjust Resolution or Trim (Optional): Keep the original resolution, pick a preset, or scale by percentage; use the Trim section to export only a time range.
4. Convert and Download: Click Convert and download your .av1 file. No sign-up, no watermark.

MPEG-2 (M2V) vs AV1 at a Glance

Frequently Asked Questions

Why does the AV1 file have no audio?

A .m2v file is an MPEG-2 elementary video stream with no audio track by design — DVD and broadcast workflows store the audio separately. A raw .av1 output is likewise a bare video bitstream. The conversion has no audio to carry over either way. To produce a file with sound, mux the AV1 video into a container with an audio track, such as M2V to WebM or M2V to MP4.

Will the file actually be smaller after converting to AV1?

Almost always, often substantially. MPEG-2 is a first-generation codec, so the same footage re-encoded to AV1 at a comparable quality target is typically a fraction of the original size — AV1 alone is about 30-50% more efficient than HEVC, which is itself far ahead of MPEG-2. Exact savings depend on resolution, motion, and the bitrate or quality target you pick in step 2.

Why is AV1 encoding slower than other conversions?

AV1's compression gains come from a more complex encoder that evaluates many more coding decisions per frame than MPEG-2 or H.264. That extra work makes encoding noticeably CPU-heavy, so a long or high-resolution clip can take longer than the same job to MP4. The "Preset" control trades speed for compression — a higher-quality preset spends more time to squeeze the file smaller.

Can my device or browser play a raw .av1 file?

Playback support is for the AV1 codec, not necessarily a bare .av1 elementary stream — many players expect AV1 inside a container. AV1 decoding ships in Chrome 70+, Edge 121+ (with the built-in dav1d decoder), current Firefox, and Safari 17+ on Apple devices with a hardware AV1 decoder; VLC also plays it. For the widest compatibility, convert to AV1-in-MP4 or AV1-in-WebM rather than a raw stream.

Is my file kept private?

Yes. Your .m2v file is uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark, and files are never shared or made public. In our testing, a short standard-definition .m2v clip re-encoded to AV1 at the Very High preset produced a markedly smaller output than the MPEG-2 source at comparable quality.