Add MOV files
Choose non-empty .mov files no larger than 100 MB each.
Free online MOV to WEBM converter
Turn a MOV into a newly encoded WEBM.
Fileverses converts an eligible MOV on its server to VP9 WEBM, retaining the first video stream and audio only when the source has a first audio stream.
- VP9 video output
- Optional Opus audio
- 100 MB per MOV
Processed by our self-hosted conversion engine
Supported files
MOV footage, prepared as WEBM.
MOVWEBM
Upload a non-empty MOV. The fixed profile makes a new WEBM with VP9 video and, when available, Opus audio rather than simply changing the filename.
How it works
Convert MOV to WEBM in three clear steps
Start the server queue
Files are submitted and converted one at a time with the MOV-to-WEBM FFmpeg profile.
Inspect and save WEBM
Preview the completed result where the browser supports it, then download its separately named WEBM file.
Encoding boundaries
A fixed WEBM encode, not a remux.
The server maps the first video stream and optional first audio stream, removes source metadata and chapters, and has no codec, bitrate, trimming, or stream-selection controls.
Convert a MOV to WEBMMOV and FFmpeg readability required
Only .mov uploads from 1 byte through 100 MB are accepted, and host FFmpeg must be able to read the selected file.
VP9 with conditional Opus
The output is a newly encoded VP9 WEBM. Its first audio stream becomes Opus only if the MOV has a first audio stream.
First streams only
The profile maps first video and optional first audio streams; it does not retain alternate tracks, subtitles, attachments, metadata, or chapters.
No adjustment controls
There are no trim, resize, frame-rate, quality, bitrate, codec, or destination-compatibility controls, and output size can vary.
MOV to WEBM details
Before you convert
What does Fileverses accept for MOV to WEBM?+−
It accepts non-empty .mov files up to 100 MB each. The server must also be able to read the file with FFmpeg.
Which codecs are in the WEBM result?+−
The fixed profile encodes VP9 video and encodes Opus audio when the source has a first audio stream.
Is this a MOV container conversion only?+−
No. It creates a new encode; it is not a stream-copy remux and image quality or file size may differ.
Will every audio track be kept?+−
No. Only the optional first audio stream is mapped. A video-only MOV produces a WEBM without audio.
Are metadata and chapters retained?+−
No. The profile removes source metadata and chapters, and does not retain subtitles or attachments.
Can I trim the clip or set quality?+−
No. This route has no editing, resize, frame-rate, codec, bitrate, quality, or stream-selection settings.
Can I process several MOV files?+−
Yes. The browser submits queued files sequentially, and every successful conversion has its own download.