| srt | SubRip Subtitle Format |
| ssa | SubStation Alpha Subtitle |
| sst | Sonic Scenarist Subtitle |
| ssts | Stream SubText Script Subtitle |
| stj | STLabs Video Data |
| stl | EBU-STL Standard Subtitle File |
| str | Sony Playstation Video Stream |
| strg | E-Viewer Recorded Stream |
| sub | VobSub Subtitle |
| sub | MicroDVD Subtitle Format File |
| svi | Samsung Video File |
| svq3 | Sorenson Video v3 |
| tdt | AVCHD Thumbnail Data |
| theater | iMovie Theater Movie |
| thm | Panasonic HD Camcorder Thumbnail |
| tid | AVCHD Thumbnail Index |
| tivo | TiVo DVR Video |
| tix | DivX Ticket |
| tlv | Plotwatcher Time Lapse Video |
| tmi | TCM-3 Encoded Video File |
| tod | JVC Camcorder Video |
| tp | Beyond TV Transport Stream |
| tp0 | Homecast PVR TP0 Video |
| trec | Camtasia Studio v8.4 Recording |
| ts | Transport Stream |
| ts4 | Technisat Digicorder HD Video |
| ttxt | MPEG-4 Timed Text File |
| tvs | TeamViewer Video Session |
| tvv | TV NOW Portable Video Recorder Video |
| ty | TiVo Video Stream |
| ub1 | DRS-1100 Recorded Video |
| umv | Unimo DVR Video |
| usf | Universal Subtitle Format File |
| usm | USM Game Video |
| uvm | DECE Mobile Video |