Turn videos that will not play into MP4, the format every phone, TV, browser and editing app understands. The converter accepts MOV from iPhones and cameras, WebM from screen recorders, MKV, AVI, FLV, WMV, 3GP and more, and saves MP4 with H.264 video and AAC sound. WebM, MOV and MKV output are available too.
When the video and sound inside already fit the new format, as with most iPhone MOV and many MKV files, the converter copies them into the new container without re-encoding: it takes seconds and loses no quality. Otherwise it re-encodes with the quality and resolution you choose. Your video is processed in your browser and never uploaded.
How to use the Video Converter tool
- Choose a video file in almost any format.
- Pick the output format (MP4 is recommended).
- Choose the quality and, if you want a smaller file, a lower resolution.
- Click "Convert video". Fast copy finishes in seconds; re-encoding shows a progress bar.
- Preview the converted video and download it.
Why use ToolOrca Video Converter
- MOV, WebM, MKV, AVI, FLV, WMV, 3GP, MPG and TS input
- MP4 (H.264 + AAC), WebM (VP8 + Opus), MOV and MKV output
- Automatic lossless fast copy when the codecs already fit
- Quality presets and 1080p, 720p or 480p resizing
- Progress bar with cancel; no upload, no watermark
Container versus codec
A video file is a container (MP4, MOV, MKV, WebM) holding streams compressed with codecs (H.264, HEVC, VP8, AAC, Opus…). Many "conversion" problems are really container problems: an iPhone MOV already contains H.264 or HEVC video and AAC sound, so it only needs a new MP4 wrapper. The converter detects this and remuxes in seconds.
If the codecs do not fit, for example VP9 video from WebM into MP4, or old DivX AVI files, the video is re-encoded to H.264, which takes longer but plays everywhere.
Which format should I choose?
MP4 is the safe choice for phones, WhatsApp, social media and editing apps. WebM is open and good for websites, but encoding it in the browser is slow. MOV suits Apple apps like iMovie and Final Cut. MKV holds almost any codec and is popular for media players such as VLC and Kodi.
Frequently asked questions
How do I convert MOV to MP4?
Choose the MOV file, keep MP4 selected and click Convert video. Most iPhone MOV files are converted in seconds by copying the streams.
Does converting reduce quality?
Fast copy keeps the exact original quality. Re-encoding at the High or Good preset is visually very close to the original.
Can I convert MKV or AVI files?
Yes. MKV, AVI, FLV, WMV, 3GP, MPG and TS files are supported. Your browser may not preview some of them, but they still convert.
Is my video uploaded?
No. The conversion happens on your own device with FFmpeg running in your browser.
Why is WebM conversion slow?
The VP8 encoder used for WebM is slower than H.264 in the browser. For speed, choose MP4.