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ROFL WEBM
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Convert ROFL to WEBM

Can you convert ROFL to WEBM?
Verified by Adam B.· reviewed by FE Editorial ·updated Aug 20, 2026
QUICK ANSWER
Is it possible to convert ROFL to WEBM?
No - not a direct conversion.

The only way to get a WebM recording of a League of Legends replay is to play it in the League client and screen-record it with OBS Studio. The ROFL file itself contains no pixel data at all.

No direct path
Also to WEBM: OGV · MKV · F4V

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert ROFL to WEBM?

A ROFL file (League of Legends Replay, introduced in the patch 7.x era) is a proprietary binary stream of player inputs, unit positions, and game events. WebM is a web video container (introduced 2010) holding VP8/VP9 or AV1 video frames. Because ROFL stores no rendered frames, the League engine must re-simulate the match in real time to produce any visual output, making direct conversion to .webm impossible.

How to convert ROFL to WEBM

OBS Studio FREE

Play the .rofl file in the League of Legends client, then record the game window with OBS Studio set to VP9 codec and WebM output.

About these formats

.ROFL League of Legends Replay

A ROFL file is a League of Legends replay created by Riot Games. It is not a video - it stores recorded game data that the League client re-simulates. Open it by double-clicking it with…

Open .ROFL details →
.WEBM WebM Video

A WEBM file is Google's open video container that holds VP8, VP9 or AV1 video with Vorbis or Opus audio. Drag it into any modern browser or open it in VLC - no codec pack needed. If a…

Open .WEBM details →

Quality & what to watch

  • ROFL files are tied to the patch they were recorded on; after a League update, older replays will not open and cannot be recorded.
  • A 30-minute ROFL file is only a few megabytes because it stores event data, not footage; the same match as WebM video would be several gigabytes.
  • OBS Studio is available free from obsproject.com and runs on Windows and macOS.

Frequently asked questions

Is there any tool that converts a ROFL file directly to WebM?
No - the ROFL format contains no video frames, so no converter can produce WebM output without running the full League game engine.
My old ROFL file will not open. Can I still get a video from it?
No - once a League patch update makes a replay unplayable, the rendered frames are gone and the replay cannot be recovered.
Can I choose WebM output directly in OBS?
Yes - in OBS output settings, select VP9 as the codec and WebM as the container to get a native WebM file.