When Your Video Won’t Play
Your iPhone recorded everything in MOV. Your client’s Windows laptop won’t open it. Your smart TV chokes on MKV files. The web player on your site needs MP4 or WebM. This is the container format problem, and it comes up constantly.
Upload the video, pick the format you need, get a converted file back. FFmpeg does the heavy lifting on the server.
The Formats, in Plain English
- MP4: works everywhere. Phones, laptops, TVs, browsers, email clients. When in doubt, convert to MP4.
- WebM: Google’s open format. Lighter than MP4 for web use. Good for sites that need fast-loading embedded video.
- MOV: Apple’s format. You need this for Final Cut Pro, iMovie, and some AirDrop workflows.
- MKV: the archivist’s choice. Supports multiple audio tracks, subtitles, and chapter markers in one file. Most players handle it, but some TVs and mobile apps don’t.
- AVI: old but not dead. Industrial equipment, medical imaging systems, and some legacy software still require AVI.
How To
- Upload your video.
- Pick the target format.
- Click Convert Video.
- Download the result.
A MOV from your iPhone becomes an MP4 your Windows coworkers can open. An MKV from a download becomes something your Samsung TV will actually play. Straightforward.
Common Scenarios
iPhone to Windows. You AirDropped a MOV to yourself and need to share it with the team. Half of them are on Windows. Convert to MP4 and everyone’s happy.
Website embedding. You’re adding a product video to your landing page. The <video> tag needs MP4 (H.264) for Safari or WebM (VP9) for the smallest possible file. Either way, you need to convert from whatever format the videographer delivered.
Editing compatibility. Your editor uses DaVinci Resolve and it’s being picky about the MKV you downloaded. Convert to MOV and the import works smoothly.
Archiving with metadata. Converting important recordings to MKV lets you bundle multiple audio tracks (like the original plus a commentary track) and subtitle files into one container. Good for long-term storage.
Legacy systems. Some SCADA panels, older medical imaging viewers, and embedded displays only accept AVI. It’s not glamorous, but the need is real.
If you want the audio track as a standalone file (MP3, WAV, or AAC), use the Extract Audio from Video tool instead. To shrink the file size after converting, the Video Compressor can help.
FAQ
Which format should I default to? MP4. It’s got the widest support across devices and platforms. Only go with something else if you have a specific reason.
Does conversion hurt quality? Re-encoding always involves a small quality trade-off. The server uses sensible FFmpeg defaults to minimize the difference. If quality is critical and your player supports the original format, skip the conversion.
What about the audio? Audio is preserved (or re-encoded to fit the target container). You won’t lose your sound track.
How long does it take? A few minutes for most files. Larger videos and certain format combinations take longer.
Can I convert audio files with this? No, it’s video-only. For audio format conversion, there’s a dedicated Audio Format Converter tool.