AV1 to MXF Converter

Convert AV1 to MXF Online

Wrap a raw AV1 bitstream into MXF, the SMPTE container (SMPTE ST 377-1) that Avid Media Composer, Premiere Pro, DaVinci Resolve, and broadcast playout systems expect for ingest. A bare .av1 file is a video-only OBU elementary stream that most professional tools won't import directly; this converter transcodes it into a standards-based MXF that those systems read. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark.

How to Convert AV1 to MXF

1. Upload Your AV1 File: Drag and drop your .av1 file onto the page or click "+ Add Files." Multiple files convert with the same settings.
2. Pick the Video Codec: Open Advanced Options and choose the MXF video codec — MPEG-2 (the default for MXF) or H.264. MXF audio is written as PCM 16-bit Little Endian.
3. Set Quality, Resolution, or Trim (Optional): Use the Preset dropdown (Very High is recommended), a Preset Resolution, or the Time Range trim to limit output.
4. Convert and Download: Click "Convert" and download your MXF file. No sign-up, no watermark.

AV1 vs MXF — What Actually Changes

Frequently Asked Questions

Will my MXF file have an audio track?

Only if the source did. A raw .av1 file is a video-only OBU elementary stream — it carries no audio — so the resulting MXF is a video-only file. If your AV1 video is already inside a container that also holds an audio track, the audio is carried into the MXF as PCM 16-bit Little Endian. To add sound to a silent MXF, mux in an audio track afterward in your editor.

Which codec ends up inside the MXF?

By default the video is transcoded to MPEG-2, which is the most broadly interoperable essence for MXF delivery and ingest. You can switch the video codec to H.264 in Advanced Options. Audio is always written as PCM 16-bit Little Endian, the uncompressed audio essence common in professional MXF files.

Does this produce OP1a or OP-Atom MXF?

This converter outputs a single self-contained MXF file — the OP1a-style layout where video and audio essence live together in one file, which is what most broadcast playout and ingest workflows expect. Avid Media Composer's managed media often prefers OP-Atom (one essence per file, referenced by the project), so if you're importing into an Avid bin you may need to transcode or consolidate inside Media Composer after import.

Why convert AV1 to MXF at all?

AV1 is a royalty-free delivery codec built for web and streaming, not for editing or broadcast handoff. Professional NLEs and station automation systems standardize on MXF because it pairs predictable essence (MPEG-2, AVC-Intra, DNxHD) with rich SMPTE metadata. Converting to MXF gets AV1 footage into Avid, Premiere Pro, DaVinci Resolve, or a broadcast ingest pipeline that would otherwise reject the raw bitstream.

How large a file can I upload?

The real limit is upload size and time over your connection rather than your device — MXF with PCM audio is uncompressed on the audio side and MPEG-2 video is not as space-efficient as AV1, so expect the MXF to be considerably larger than the source .av1. For long-form footage, trim to the range you need with the Time Range control before converting. In our testing, a 30-second 1080p AV1 clip converted to an MPEG-2 MXF ran roughly 3–5x the source file size, driven mostly by the less aggressive MPEG-2 compression.

Are my files private?

Yes. Uploads travel over an encrypted (TLS) connection, are processed on our servers, and are deleted automatically after a few hours. Files are never shared or made public, and there's no sign-up or watermark. If you'd rather go the other direction later, the MXF to AV1 converter reverses the process, and MXF to MP4 makes the footage easier to share.