Convert MOV to OPUS Online
Convert iPhone or QuickTime MOV video to Opus audio, free, in your browser.
.mov · up to 100 MB
What it's for
iPhone MOV to Opus for Discord and VoIP
iPhone to Discord directly
Convert your iPhone recording to Opus, Discord's native codec, with no intermediate steps.
Voice-optimized
Opus SILK is designed specifically for human voice frequencies. Ideal for podcasts and VoIP.
100% private
Your MOV video never leaves your device. Local processing with FFmpeg.wasm.
Royalty-free
Opus is patent and royalty free. AAC and MP3 require commercial licenses from Via Licensing.
How it works
Three steps, no hassle
Upload your MOV file
Drag or select your .mov video. Compatible with iPhone, GoPro, and QuickTime recordings.
Audio extraction to Opus
FFmpeg.wasm decodes the AAC audio from the MOV and encodes it to Opus 48 kHz in your browser.
Download your Opus
Your .opus file is ready for Discord, Telegram, podcasts, and VoIP apps.
FAQ
Got questions?
MOV files recorded by iPhone use the QuickTime container (Apple MOV, defined in Apple's QuickTime File Format spec, first version 1991) with AAC-LC audio at 44.1 kHz or 48 kHz stereo at 64–256 kbps depending on the model. Since iPhone 12, Dolby Atmos recording uses AAC encoded with Apple's spatial audio metadata. iPhone 15 Pro MOV with ProRes Video recording uses AAC audio at 256 kbps.
AAC extracted from a MOV produces an .m4a that is not directly compatible with Discord, Telegram bots, or WebRTC without re-encoding. Opus is the native codec for these platforms (RFC 7874, May 2016). Additionally, Opus at 64 kbps offers quality equivalent to AAC at 128 kbps, halving the voice file size while maintaining the same perceptual quality.
Yes. GoPro (Hero 10, 11, 12) records in MP4 or MOV container with AAC-LC audio at 48 kHz. Sony (ZV-1, A7 series) uses MOV or MP4 with AAC at 48 kHz. DJI uses MOV/MP4 with AAC at 48 kHz. All are compatible. The MOV container is essentially ISO 14496-12 with Apple extensions; FFmpeg handles all variants.
Yes, with the correct bitrate selection. For voice podcast, 48–64 kbps Opus produces quality comparable to MP3 at 128 kbps. For podcasts with music (interviews with musical intro), 96–128 kbps. Platforms like Spotify, Apple Podcasts, and Anchor accept MP3 and AAC natively but not Opus directly; if those are your targets, export to MP3 instead. For direct distribution on Discord, Telegram, or your own website, Opus is technically superior.
Location, recording date, and device model metadata in iPhone MOV files are stored in QuickTime-specific atoms (©xyz for GPS, ©day for date). FFmpeg extracts text metadata (title, date) and transfers them to Vorbis Comment tags in the Opus. Apple-specific GPS location data has no direct Vorbis Comment equivalent and is discarded.
With FFmpeg.wasm in a modern browser (Chrome 120+, Firefox 122+) on current consumer hardware, a 1-hour voice MOV (approximately 1–4 GB depending on video quality) processes its audio track in 3–10 minutes. The video is not processed — only the audio track is extracted and re-encoded, which is significantly faster than video transcoding.
Convert MOV to Opus: extract Apple video audio for Discord, Telegram, and VoIP
MOV is Apple's proprietary video container, defined in the QuickTime File Format specification first published in 1991. It is the native recording format for iPhone (all models), iPad, Apple FaceTime HD cameras, and remains the default export format for Final Cut Pro and iMovie. Technically, MOV is an Apple implementation of ISO 14496-12 (MPEG-4 Part 12) with proprietary extensions in certain metadata atoms. Audio inside an iPhone MOV invariably uses AAC-LC (Advanced Audio Coding Low Complexity) at 44.1 kHz or 48 kHz stereo, with bitrates ranging from 64 kbps (basic recording) to 256 kbps (iPhone 15 Pro in ProRes Video mode with high-quality audio). Since iOS 14 and iPhone 12, Apple adds Dolby Atmos spatial audio metadata to the AAC track, though the base audio encoding remains AAC-LC. The need to convert that audio to Opus arises mainly from three scenarios: distributing voice recordings on platforms that use Opus natively (Discord, Telegram, WebRTC); file size optimization for independent podcasts where distribution servers charge by bandwidth; and extracting voice from meetings, interviews, or classes recorded in MOV for distribution as standalone audio. Opus, standardized in RFC 6716 of September 2012, is technically superior to AAC for voice distribution at 32–96 kbps bitrates: its SILK module (inherited from Skype) has an adaptive linear prediction model specifically optimized for the human voice spectrum (80 Hz–8 kHz in narrowband mode, 80 Hz–16 kHz in wideband), producing perceptually equivalent quality to AAC at half the bitrate in that range.
The most relevant destination ecosystem for MOV-to-Opus conversion is real-time communications and instant messaging. Discord adopted Opus as its sole audio codec when it launched its voice application in May 2015, justifying the choice with exactly the same arguments as WebRTC's RFC 7874: configurable latency of 2.5 to 20 ms (versus AAC-LC's 45 ms minimum), superiority at 32–64 kbps bitrates, and absence of royalties. Telegram has used Opus for voice notes since 2013, making it one of the first messengers to massively adopt Opus. WhatsApp migrated to Opus for voice notes in 2016. Zoom uses Opus as a secondary codec alongside its proprietary codec. Signal has used Opus for voice calls since its creation in 2014. All these services transmit audio internally in Opus format; sending a .opus file produced from an iPhone MOV means delivering audio already in their native format, requiring no re-encoding on their end. For podcasters recording on iPhone and distributing outside platforms like Spotify (which requires MP3/AAC): the size difference is substantial. A 1-hour interview recorded in MOV with AAC audio at 128 kbps produces an .m4a of approximately 56 MB. The same interview in Opus at 64 kbps produces approximately 28 MB with perceptually equivalent quality according to Xiph.org MUSHRA studies.
Convertir.ai processes the MOV-to-Opus conversion entirely in the browser via FFmpeg.wasm. The processing chain: FFmpeg.wasm reads the MOV file, identifies the audio track (trak atom with subtype soun), decodes the AAC-LC with FFmpeg's native decoder to PCM at 44.1 kHz or 48 kHz, applies resampling to 48 kHz (Opus's native sample rate per RFC 6716, section 2) using FFmpeg's Kaiser-windowed sinc filter, and encodes the resulting PCM with libopus at the user-selected bitrate. For voice audio, the speech application mode activates Opus's SILK encoder, which models the voice source with adaptive linear prediction of variable order (8–16 for narrowband, 16 for wideband, based on spectral content). For musical audio, the audio mode uses CELT with psychoacoustic critical-band analysis. Metadata available in the MOV (©nam for title, ©ART for artist, ©day for date, ©cmt for comments) is transferred to Vorbis Comment tags in the resulting Opus for compatibility with players that read tags. The MOV video is discarded entirely — only the audio track is processed, significantly reducing processing time compared to video transcoding. The output .opus file in OGG container is compatible with VLC 2.1+, mpv, Firefox 15+, Chrome 25+, Foobar2000, Audacious, and all Discord and Telegram clients. The service is completely free, no signup, and no file limit.