Convert MOV to OGG — Free Online Tool
Convert MOV files to OGG format by extracting and re-encoding the audio stream using the Vorbis codec — ideal for publishing open-format audio from Apple QuickTime recordings. Video and subtitle streams are discarded, producing a lightweight, royalty-free audio file fully compatible with open-source media players.
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FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
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Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
MOV is a feature-rich Apple container that typically holds video, audio, subtitles, and chapter data, with the audio most commonly encoded as AAC or PCM. OGG is a Xiph.Org audio-only container that does not support video, so during this conversion FFmpeg discards the video stream entirely and re-encodes the audio — whatever codec it was originally (AAC, MP3, PCM, etc.) — into Vorbis using a variable bitrate quality scale. This is a full audio transcode, not a remux, meaning the audio is decoded from its original format and re-encoded from scratch into libvorbis. The result is a standalone OGG/Vorbis file that is royalty-free and natively supported by browsers like Firefox and Chromium, as well as open-source players like VLC and Audacious.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg binary — the open-source multimedia processing engine that handles decoding the MOV container, transcoding the audio, and writing the OGG output. In the browser version, this runs as a WebAssembly (FFmpeg.wasm) instance with no server upload required. |
-i input.mov
|
Specifies the input file as a MOV (QuickTime) container. FFmpeg reads all streams present — video, audio, subtitles, chapters — and makes them available for processing. Only the audio stream will be used in the output. |
-c:a libvorbis
|
Sets the audio codec to libvorbis, encoding the output audio as Ogg Vorbis — the royalty-free, open-source lossy audio codec native to the OGG container. The source audio (typically AAC or PCM from MOV) is fully decoded and re-encoded into Vorbis. |
-q:a 4
|
Sets the Vorbis variable bitrate quality level to 4 on a 0–10 scale, targeting approximately 128 kbps. This is the default balance between file size and audio fidelity, suitable for voice recordings, podcasts, and general music. Increase this value (e.g., 6 or 8) for higher-quality output from music or professional MOV recordings. |
output.ogg
|
Defines the output filename and tells FFmpeg to write an OGG container. The .ogg extension signals the Xiph OGG muxer, which wraps the Vorbis-encoded audio stream into the open OGG format ready for use in browsers, open-source games, and royalty-free media archives. |
Common Use Cases
- Extract the audio narration from a QuickTime screen recording (.mov) to publish as an open-format podcast or audiocast compatible with royalty-free distribution platforms.
- Convert Apple ProRes or H.264 MOV footage from a camera or editing suite into OGG/Vorbis for use as background music or sound effects in open-source game engines like Godot, which natively favor OGG.
- Strip the audio track from a Final Cut Pro exported MOV file to produce a lightweight OGG file for embedding in a website without loading the full video.
- Re-encode AAC audio from an iPhone-recorded MOV into Vorbis OGG to meet open-format requirements on platforms like Wikipedia Commons or Open Game Art that mandate royalty-free codecs.
- Extract and convert spoken-word audio from a QuickTime interview recording into OGG for archival in open digital library systems such as Omeka or Internet Archive collections.
- Convert MOV audio commentary tracks into OGG for use in HTML5 web applications where Vorbis support is preferred over proprietary AAC licensing.
Frequently Asked Questions
No — OGG is an audio-only container format and cannot store video streams. FFmpeg automatically drops the video track during this conversion and outputs only the re-encoded audio. If your goal is to keep the video, you would need to target a different output format such as WebM or MP4.
Yes, this is a lossy-to-lossy transcode, which means there is a generation of quality loss. AAC is decoded back to raw PCM audio and then re-encoded into Vorbis. At the default quality setting of -q:a 4 (roughly equivalent to 128 kbps variable bitrate), the result is transparent for most listening scenarios, but audiophiles working with high-quality source material may notice subtle degradation. If your MOV contains lossless PCM or ALAC audio, the quality loss is only from the final Vorbis encoding step.
The -q:a flag controls Vorbis variable bitrate quality on a scale from 0 (lowest, ~64 kbps) to 10 (highest, ~500 kbps), with 4 being the default and targeting approximately 128 kbps. To increase quality, raise the value — for example, use -q:a 6 for roughly 192 kbps or -q:a 8 for near-transparent quality around 256 kbps. Replace the 4 in the command with your chosen value: ffmpeg -i input.mov -c:a libvorbis -q:a 6 output.ogg.
OGG supports chapter markers and standard metadata tags (such as title, artist, and album), and FFmpeg will attempt to carry over compatible metadata from the MOV source. However, MOV-specific metadata structures like Final Cut Pro chapter tracks or Apple-proprietary tags may not map cleanly and could be dropped or partially preserved. Basic ID3-style tags like title and comment are generally transferred without issue.
Yes. On Linux or macOS you can run a shell loop: for f in *.mov; do ffmpeg -i "$f" -c:a libvorbis -q:a 4 "${f%.mov}.ogg"; done. On Windows Command Prompt, use: for %f in (*.mov) do ffmpeg -i "%f" -c:a libvorbis -q:a 4 "%~nf.ogg". This is especially useful for bulk-converting archives of QuickTime recordings that exceed the 1 GB browser limit.
MOV files typically contain a full video stream, which accounts for the vast majority of the file size — often 90% or more. Since OGG drops the video entirely and retains only the Vorbis-encoded audio, a dramatic reduction in file size is expected and normal. Additionally, Vorbis at -q:a 4 is a compressed lossy format, so even compared to uncompressed PCM or lossless audio from the MOV, the output will be considerably smaller.
Technical Notes
OGG using the libvorbis codec is a fully open, patent-free audio format maintained by Xiph.Org, making it especially valuable for projects with open licensing requirements. The conversion from MOV requires a full audio transcode regardless of the source codec — unlike MOV-to-MP4 conversions where AAC audio can sometimes be stream-copied, there is no codec overlap between typical MOV audio (AAC, PCM) and the OGG container's supported codecs (Vorbis, Opus, FLAC) that would allow a lossless remux unless the source already contains libvorbis or FLAC audio. Transparency data and subtitle tracks present in the MOV are silently discarded, as OGG does not support either. If you require a lossless output, consider specifying -c:a flac in place of -c:a libvorbis, which will produce a FLAC-in-OGG file — also valid OGG but without any lossy encoding step. Multiple audio tracks in the MOV are handled by FFmpeg's default stream selection, which picks the first (or best-ranked) audio track; to extract a specific track, add -map 0:a:1 (or the appropriate index) to the command.