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Supports: MOV
MOV is Apple's QuickTime File Format — first released in 1991 and made public in 2001. It plays natively on macOS, iOS, QuickTime, and VLC, but a.mov file recorded on an iPhone often stalls on Windows, Android, smart TVs, and web players that either lack the right codec or don't recognize the container. Converting re-wraps or re-encodes the underlying video and audio streams into a combination the target device speaks natively. Common reasons people convert MOV:
<video> tag won't play in many browsers. WebM (VP9 or AV1) and MP4 (H.264) are the two formats every modern browser can stream.MOV and MP4 are closer than most people realize. The International Organization for Standardization used Apple's published QuickTime specification as the basis for the MPEG-4 file format, and MP4 (ISO/IEC 14496-14:2003) is built on the ISO Base Media File Format that grew out of QuickTime. Because both containers can hold the same H.264 and AAC streams, a MOV that already contains H.264 video and AAC audio converts to MP4 as a lossless container remux — the streams are copied into the new container with zero re-encoding. The difference is reach: MP4 plays on essentially every device made in the last 15 years, while MOV is the format of choice inside the Apple editing ecosystem (Final Cut, ProRes intermediates).
| Property | MOV | MP4 |
|---|---|---|
| Origin | Apple QuickTime File Format (1991, opened 2001) | ISO/IEC 14496-14:2003, derived from QuickTime |
| Native playback | macOS, iOS, QuickTime, VLC | Windows, macOS, iOS, Android, browsers, smart TVs, consoles |
| Typical video codecs | H.264, HEVC, ProRes, Apple Animation | H.264, HEVC, AV1 |
| Typical audio codecs | AAC, PCM, ALAC | AAC, MP3 |
| Best for | Mac/Final Cut editing, ProRes masters | Sharing, streaming, social uploads, archive |
| Lossless remux to the other? | Yes, when codecs already match | Yes, when codecs already match |
A container (MOV, MP4, MKV, WebM, AVI) is the wrapper; the codec (H.264, H.265, VP9, AV1) is how the picture is actually compressed inside it. Picking the right pair is what makes a file play — or refuse to.
| Target | Standard / Origin | Native playback | Typical codecs | Best for |
|---|---|---|---|---|
| MP4 | ISO/IEC 14496-14:2003 | Universal — Windows, macOS, iOS, Android, browsers, smart TVs | H.264, HEVC, AV1, AAC | Sharing, streaming, social uploads, archive |
| WebM | Google / WHATWG (2010, royalty-free) | All modern desktop browsers; partial in older Safari | VP8, VP9, AV1, Opus, Vorbis | HTML5 web embeds, screen recordings |
| MKV | Matroska (open, 2002) | VLC, MPV, modern Android; not Safari / Roku | H.264, HEVC, AV1, FLAC, multi-track | Multi-audio, multi-subtitle releases, media servers |
| AVI | Microsoft (1992) | Windows native, VLC | DivX, XviD, MPEG-4, MP3, PCM | Legacy Windows tools and older editors |
| GIF | CompuServe (1987) | Everywhere | n/a (frame-by-frame palette) | Short silent loops, broad embed support |
For codec choice: H.264 is the universal default — fast to encode and hardware-decoded on virtually every consumer device since around 2010. H.265 (HEVC) roughly halves the file at the same quality and is the codec iPhones already record, but it's royalty-bearing and not installed everywhere by default. VP9 is royalty-free and ideal for web embeds, supported in Chrome, Firefox, and Edge but not Safari. AV1 is the most efficient — roughly ~30% smaller than H.265 at matched quality, and ~50% smaller than H.264 — and now decodes in Chrome 70+, Firefox 67+, and Edge 121+, with partial support in Safari 17+; software encoding remains slow, so it pays off most for clips you'll stream many times.
To shrink a MOV without changing its format, use Compress MOV. To cut footage before converting, use the Video Cutter. Converting the other direction? See MP4 to MOV or HEVC to MP4.
Most often because the.mov holds HEVC (H.265) video. Modern iPhones record HEVC inside a.mov container by default, and while Windows can open the container, it ships without an HEVC decoder — Microsoft moved that codec into a paid Store extension (about $0.99 retail; free on some OEM machines as "HEVC Video Extensions from Device Manufacturer"). You can install that extension, play the file in VLC (which bundles its own decoders), or convert to MP4 with H.264 here, after which the file plays natively on every Windows version since 7.
If the MOV already contains H.264 video and AAC audio — which is common for screen recordings and many exports — converting to MP4 is a lossless container remux: the streams are copied into the new wrapper with no re-encoding, so quality is identical. Only when the codec actually changes (for example HEVC → H.264, or downscaling 4K to 1080p) is there any generative loss, and setting Constant Quality (CRF) around 18–20 keeps that output visually indistinguishable from the source. The default "Very High" preset is tuned for visually lossless results.
Upload the file, choose MP4 as the Video File Extension, and leave the Video Codec on H.264 (the default). The converter re-encodes the HEVC stream to H.264, which every browser, smart TV, console, and Windows machine decodes without an extra codec. The trade-off is a larger file than HEVC at the same quality; if size matters more than reach and your viewers are all on recent Apple or Android hardware, you can keep HEVC instead.
MP4 with H.264 if you're sharing with a mixed audience or uploading to social platforms — it's the safe default. WebM (VP9 or AV1) if the clip is destined for a website, since browsers stream it efficiently. MKV if you need to keep multiple audio tracks or subtitle streams together. Stick with MOV only if the file stays inside the Apple editing ecosystem.
Yes. Choose an audio format such as MP3 as the output instead of a video container, and the converter drops the video track and saves the soundtrack on its own — useful for interviews, voice memos recorded as video, or pulling a music bed out of a clip. The dedicated MOV to MP3 tool does the same thing in one step.
Convert it to GIF using the MOV to GIF tool, where you can set the framerate, color palette size, and dithering to balance smoothness against file size. GIF has no audio and a limited color palette, so it suits short, silent loops — a few seconds at most — rather than full-length footage. For anything longer, an MP4 or WebM stays far smaller and sharper.
Switch the quality mode to Specific file size and enter your target in MB; the encoder auto-tunes the bitrate to hit it. For tighter control, combine downscaling (drop 4K to 1080p, or 1080p to 720p) with H.265 or AV1 — both cut size another 40–50% beyond H.264 at the same perceptual quality. Trimming dead footage with the Video Cutter first is the single highest-leverage step on long clips.
There's no fixed per-file cap. Conversion runs on our servers, so the practical limit is upload size and connection speed and your patience for the upload — multi-gigabyte 4K and 8K MOV files are routine. Batch jobs have no quantity limit either; if a very large file makes your device start swapping, process files one at a time or trim them first to reduce the working set.
Yes. Drop in as many.mov files as you like and they convert in parallel to the same target format, or you can adjust settings per file. When the job finishes, download each result on its own or pull the entire batch down as a single ZIP — there's no per-job file count limit.