| If your source file is format: | . . . then we will try to derive the following formats: | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Animated GIF | Cinepack | Closed Caption Text | h.264 | h.264 720P | MP3 | MPEG2 | Ogg Video | SubRip | Thumbnail | Video Index | |
| 3GP | (*) | (*) | |||||||||
| 56Kb QuickTime | (*) | (*) | |||||||||
| 64Kb MPEG4 | (*) | (*) | |||||||||
| 64Kb QuickTime | (*) | (*) | |||||||||
| 256Kb MPEG4 | (*) | (*) | |||||||||
| 256Kb QuickTime | (*) | (*) | |||||||||
| Cinepack | (*) | (*) | (*) | ||||||||
| Closed Caption Text | |||||||||||
| DivX | (*) | (*) | (*) | ||||||||
| DV Video | (*) | (*) | (*) | ||||||||
| Flash Video | (*) | (*) | (*) | ||||||||
| h.264 HD | (*) | (*) | |||||||||
| h.264 MPEG4 | (*) | (*) | (*) | ||||||||
| h.264/MPEG2-TS | (*) | (*) | (*) | (*) | (*) | ||||||
| ISO Image | (*) | (*) | (*) | ||||||||
| IV50 | (*) | (*) | (*) | ||||||||
| Matroska | (*) | (*) | (*) | ||||||||
| Motion JPEG | (*) | (*) | (*) | ||||||||
| Movie Frames | |||||||||||
| MPEG1 | (*) | (*) | (*) | (*) | |||||||
| MPEG2 | (*) | (*) | (*) | (*) | (*) | ||||||
| MPEG2-TS | (*) | (*) | (*) | ||||||||
| MPEG4 | (*) | (*) | (*) | ||||||||
| Ogg Theora | (*) | (*) | (*) | ||||||||
| QuickTime | (*) | (*) | (*) | ||||||||
| Real Media | (*) | (*) | (*) | ||||||||
| WebM | (*) | (*) | (*) | ||||||||
| Windows Media | (*) | (*) | (*) | ||||||||
video (h.264):
640x480 (width scaled if wider/narrower than 4x3 ratio)
~768kb/sec (maxrate)
audio (AAC):
stereo, 128kb/sec 44.1Khz sampling
video (theora):
400x300 (width scaled if wider/narrower than 4x3 ratio)
target ~512 kb/sec
audio (vorbis):
stereo, ~128kb/sec 44.1Khz sampling
MP3 format, stereo, lame compressor "-standard" parameter/setting
which targets ~140 kb/sec
If for some reason, you prefer to not have your item create the derivative of one or more formats, you can upload to your item a special "rules" named "_rules.conf". That file should be a text file, with a single line of each format to disallow.
So, for example, to make (all videos in) a video item *not* create our
"Animated GIF" and "h.264" formats, you would upload "_rules.conf"
containing the following:
To prohibit *just* video and audio derived formats that are "lossy"
(eg: mp3, ogg, mp4, ogv)
you would upload "_rules.conf" containing the following:
To prohibit *all* derived formats,
you would upload "_rules.conf" containing the following:
To make any previously created derivatives "disappear" after adding or updating a "_rules.conf" file to an item, use the "Item Manager" link to submit a "derive" task (which will remove the undesired derivatives). (Find the "Edit Item" link in the upper right of your item while you are logged in, click "change the information" link, click the "Item Manager" link near the top of that page, then hit the "derive" button).