Answers to commonly asked questions about CADET
- What operating systems can I use to run CADET?
CADET has been tested on OS X and Windows (7 and 10). You can also run CADET on Linux: from the command line or from an executable script, run the following two commands:
$ cd <path-to-cadet-directory>/cadet-resources
$ node cadet-server —dir ~
- Why do I need to install Node.js in order to run CADET?
Node.js provides a local Web server (that is, a Web server that runs on your own computer), which makes it possible for CADET to run without being connected to the Internet.
- Can I run CADET in more than one browser simultaneously?
Yes. If you do run more than one instance of CADET, though, you should not be working on the same project file simultaneously.
- What file formats will CADET import?
CADET will import the following file formats: WebVTT, TTML, SRT, QTtext and plain-text files with the extension ".txt". CADET will not import Word files.
- What file formats will CADET export?
CADET will export the following file formats: WebVTT, TTML, SRT, QTtext, SAMI and plain-text (.txt) files.
- I've used an automatic-captioning service and the captions are full of errors! Can I import this caption file into CADET and clean it up?
Yes. Import the auto-generated caption file into CADET (using one of the supported import formats), correct the errors in text and timing, and re-export in the appropriate format for your target video player.
- I styled some of my captions using colors and different fonts, but these styling features do not appear when I export the captions and play them in a media player. Why not?
CADET provides a wide range of styling options. However, not all caption formats support all of these styling options: for example, SRT does not support markup for text colors or different font faces. Other formats, such as WebVTT and TTML, do support styling options, but not all media players are capable of correctly interpreting styling markup. So even if you export a TTML file with markup for red text, the target player will only show white text if it doesn't know how to interpret the markup for red text.
- My caption styles appear correctly in the caption-editing grid in CADET, but the captions in CADET's media player don’t show the styling. Why is that?
CADET uses WebVTT to display captions in the player. While WebVTT supports markup for certain kinds of caption styling, some browsers (such as IE, Edge and Firefox) simply ignore all styling markup that is included in WebVTT files. This is why you will only see styled captions when you are running CADET in a browser that supports the styling markup found in WebVTT. Be assured, however, that the WebVTT files that you export from CADET (as well as other caption formats that support styling markup, such as TTML, QTtext and SAMI) contain the appropriate styling commands, regardless of the browser in which CADET is running. Whether or not your target player will render those styles depends on the player’s ability to interpret the markup correctly.
- I've exported WebVTT captions and put them in a directory with the video on my computer. When I play the video in Chrome, I don't see any captions. But when I play the video in other browsers, I do see captions. Why?
Chrome won't play captions locally, but if you transfer the WebVTT file to a server you'll see the captions.
- Can I position captions somewhere other than at the bottom of my video?
CADET only positions captions at the bottom of the video. Vertical-placement options will be supported in a future release, however.
- Can I change the default display of the captions in CADET's video player?
Because CADET uses your browser's native video player, the captions in the player might look different from one browser to the next. If you're using Safari or IE, however, you can change the default look of the captions:
- IE 11: go to > > > .
- Edge: go to > > > .
- Safari: go to > > .
Note: All of the styling options that you choose will affect the captions that you see in CADET only, but not in the exported caption file.
- In IE, when I type Control-O to open a project, a browser dialog appears with no files in it. What should I do?
In IE, the Ctrl-O key combination is first trapped by the browser itself, which pops up IE’s "Open URL" dialog. Simply close this dialog (either with the mouse or by hitting the Escape key) and CADET's file-browser dialog will fill up with files. Alternatively, you can just open the menu and select .