FAST MEDIA TOOLS · MADE SIMPLE
Video Format Converter
Find a format for your goal, compare containers and codecs, and open an available conversion tool.
FORMAT FINDER
Find the Right Video Format
Choose your current format and what you want to do.
MKV is a flexible container that can hold multiple audio and subtitle tracks.
RECOMMENDED OUTPUT
MP4
Preferred video codec: H.264
MP4 with H.264 is widely compatible with phones and video players. Playback still depends on the device and audio codec.
FIND A CONVERSION
Format Matrix
Filter by format or search for a codec, conversion or use.
Container conversions
| Video codec / Method | Best for | Action | |
|---|---|---|---|
| MKV to MP4 | Compatible H.264 remux or H.264 transcode | Device compatibility | Open tool ↗ |
| MOV to MP4 | H.264 or MPEG-4 re-encoding | Sharing and playbackAudio may be omitted if encoding fails. | Open tool ↗ |
| Video to MP4 | H.264 or MPEG-4 re-encoding | Compatible playbackOn the home converter, select MP4 output. Audio may be dropped if encoding fails. | Open tool ↗ |
| Video to WebM | WebM video encoding | Web delivery | Not available |
| WebM to MP4 | H.264 or MPEG-4 re-encoding | Playback on more devicesOn the home converter, select MP4 output. Audio may be dropped if encoding fails. | Open tool ↗ |
Animation conversions
| Video codec / Method | Best for | Action | |
|---|---|---|---|
| AVI to GIF | Animated GIF encoding | Short silent animationsThe browser must be able to preview the source. | Open tool ↗ |
| GIF to MP4 | Video encoding | Share an animation as video | Not available |
| MKV to GIF | Animated GIF encoding | Short silent animationsThe browser must be able to preview the source. | Open tool ↗ |
| MOV to GIF | Animated GIF encoding | Short silent animationsThe browser must be able to preview the source. | Open tool ↗ |
| MP4 to GIF | Animated GIF encoding | Short silent animations | Open tool ↗ |
| Video to GIF | Animated GIF encoding | Short silent animationsThe browser must be able to preview the source. | Open tool ↗ |
| WebM to GIF | Animated GIF encoding | Short silent animationsThe browser must be able to preview the source. | Open tool ↗ |
Codec and optimization
| Video codec / Method | Best for | Action | |
|---|---|---|---|
| AV1 to MP4 | AV1 video re-encoding | Compatibility with older devices | Not available |
| Compress Video | Lower resolution or bitrate | Reduce file size when possible | Not available |
| HEVC to H.264 | Video codec re-encoding | Wider playback compatibility | Not available |
THE BASICS
Container vs Codec
A container packages media tracks. A codec describes how a track’s content is encoded; one container can hold different compatible codecs.
Container: MP4
- Video trackH.264, H.265 / HEVC, AV1 and others
- Audio trackAAC and other supported codecs
- SubtitlesDepending on format and implementation
Container: MKV
- Video trackH.264, HEVC, AV1 and others
- Audio track(s)One or more encoded audio tracks
- Subtitle track(s)One or more supported subtitle tracks
Remux
Changes the container while copying compatible tracks without re-encoding. The copied tracks retain their original quality.
Transcode
Decodes and re-encodes media into another codec or setting. This can change quality and usually takes longer.
AT A GLANCE
Compare Video Formats
Playback depends on the container, codecs, device and player. File size cannot be determined from the container alone.
| Format | Type | Typical codecs | Audio | Subtitles / tracks | Browser support | Typical use |
|---|---|---|---|---|---|---|
| MP4 | Container | H.264, HEVC, AV1 | Supported | Multiple tracks and some subtitle formats | Widely supported; codec dependent | Sharing and playback |
| MOV | Container | H.264, HEVC, ProRes | Supported | Multiple tracks and subtitles | Varies by browser and codec | Recording and editing |
| MKV | Container | H.264, HEVC, AV1 | Supported | Multiple audio and subtitle tracks | Limited; player and codec dependent | Multi-track media |
| WebM | Container | VP8, VP9, AV1 | Supported | Audio and selected subtitle tracks | Common in modern browsers; codec dependent | Web video |
| GIF | Animated image | GIF image frames | Not supported | No audio or subtitle tracks | Widely supported as an image | Short silent loops |
- Broad compatibility: MP4 with H.264
- Short silent animations: GIF
- Browser-oriented media: WebM where supported
- Flexible multi-track media: MKV
FAQ
What is the difference between MP4 and MKV?
Both are containers for media tracks. MKV is flexible with multiple tracks; MP4 is widely supported. Playback depends on the codecs and player.
What is the difference between MOV and MP4?
MOV and MP4 are containers that can hold similar codecs. MOV is associated with QuickTime; MP4 is widely used for sharing.
When should I use a GIF instead of MP4?
Choose GIF for a short, silent animation. Use MP4 for audio or longer video; GIF can be larger and uses fewer colors.
What is HEVC versus H.264?
Both are video codecs. HEVC can compress efficiently, while H.264 is supported by more older devices and players.
What is AV1?
AV1 is a video codec designed for efficient compression. Support depends on the device, browser and player.
What is WebM?
WebM is a media container used on the web, often with VP8, VP9 or AV1 video.
Does ClipCodec upload files to convert them?
No. The available converters process files in your browser. Large files may exceed device memory.
Which page converts MKV, and which page only accepts MP4?
MKV to MP4 accepts MKV files. MP4 to GIF accepts MP4 only; Video to GIF accepts other formats your browser can preview.
Use MKV to MP4, MP4 to GIF, or Video to GIF to start a conversion.