Which Video Formats Does TeraBox Support

Before uploading a video to TeraBox, or wondering why one will not play, it helps to know which formats TeraBox actually names as supported, rather than guessing.

What TeraBox says it supports

TeraBox's own documentation names three formats directly: MP4, AVI and WMV. These are the formats you can rely on uploading and having TeraBox play back without issue.

What is not officially confirmed

Formats like MKV, MOV, FLV, WebM, TS and 3GP show up often in unofficial "supported formats" lists across the web, but none of them appear in TeraBox's own documentation. That does not necessarily mean they fail, TeraBox's upload page rejects very little by extension, but it does mean you should not rely on official support for anything outside MP4, AVI and WMV. If a format outside that list gives you trouble, converting to MP4 first is the safest fix.

Streaming is a separate format entirely

Whatever format the original file is in, TeraBox does not stream that file directly when you or someone else opens a share link. Its platform converts video to HLS streams (files ending in .m3u8) at 480p, 720p and 1080p for playback, plus a separate audio-only stream. This is why the format of the file you uploaded rarely matters once it is shared: the player is working from a converted stream, not the original container.

High-resolution files are fine to store

TeraBox's own material also mentions support for high-resolution video, including 4K, as something the service handles. The distinction to keep in mind is between storing a file (broad tolerance) and the free playback limit (capped at standard definition), which is a separate topic covered in our quality guide.

If a video will not play at all

TeraBox's own troubleshooting advice for playback failures on Android points to three general causes: a corrupted file, a format the player cannot decode, or a damaged file header. None of these are TeraBox-specific diagnoses, they apply to almost any video player, so the fix is the same as anywhere else: try re-encoding the file to MP4 (H.264) if you control the original, or ask the sender to re-upload it.

To open a share link someone sent you regardless of its original format, paste it into the iTeraPlay player. It plays whatever stream TeraBox is currently serving for that link.