Convert a video to the format you need: MP4 for phones, TVs and browsers, WebM for websites, MKV to keep every sound track and subtitle, MOV, AVI, WMV, FLV, 3GP, DVD-style MPEG-2 or an animated GIF. Old and unusual formats are read too: VOB from DVDs, TS and MTS from camcorders and TV recordings, DV, MXF, RealMedia (RM, RMVB), OGV, F4V, 3G2 and Y4M.
Copied when possible, re-encoded when needed
A video file is a container holding a video stream, sound streams and sometimes subtitles. Often the streams already fit the new container: an MKV with H.264 video and AAC sound becomes an MP4 just by moving the streams. The converter checks every stream and:
- copies it unchanged when the new format can hold it and devices play it from that format: no quality loss, and much faster than re-encoding;
- re-encodes it with the format's standard codec otherwise: H.264 and AAC for MP4, MOV, MKV and FLV, VP9 and Opus for WebM, MPEG-4 (Xvid) and MP3 for AVI, WMV and WMA for WMV, MPEG-2 and AC-3 for MPG, Theora and Vorbis for OGV.
The result lists what was copied and what was re-encoded. Choose Always re-encode for the most compatible file, for example when an older player refuses a copied stream.
What is kept
- Sound tracks: all of them in MP4, MOV, MKV, WebM, AVI, WMV, MPG and OGV; the main one in FLV and 3GP.
- Subtitles: MKV keeps every subtitle track. MP4, MOV and WebM keep text subtitles, converted to their own subtitle format; picture-based DVD and Blu-ray subtitles need MKV.
- Orientation: upright phone videos stay upright. MP4 and MOV keep the rotation flag when the video is copied; other formats get the picture turned upright.
- Picture: interlaced video (DVD, broadcast) is deinterlaced and non-square pixels are made square when re-encoding, so the picture has the right shape in every player. HDR video is converted to standard dynamic range when it is re-encoded.
The file's own tags (title, recording date, location) are not copied into the result.
Limits
Uploads can be up to 2 GB. Copying works for videos up to 3 hours. Re-encoding is limited by processing time: about 25 minutes of 1080p video at 30 frames per second, about 6 minutes of 4K, and longer for smaller videos. Choose a lower maximum resolution under “More options” to convert more, or cut the video into parts first with the video trimmer.