4.6.4 File types

File types are defined to let SMS know how to handle uploaded files properly. Currently, there are 4 types of files, they are 'image', 'audio/{audio type}', 'vedio/{video type}', and 'aud_convertable'. Image files handling is very simple, all images files will be displayed on SMS with a much lower resolution version, click on the images will bring up the full resolution image file. Recognised audio and video files will be put on HTML5 multimedia object, which can play audio or video files on web page directly. 'aud_convertable' file type means an uploaded audio file can be converted to OGG audio file, so that audio file converter FFmpeg will handle it automatically for you (provided that you have installed this optional software). Please note that no platform can handle all audio and/or video files flawlessly. For example, iPhone and iPad are the worst platforms to handle web based multimedia files, many commonly used multimedia file types can't be handled properly on iOS web browsers. To maintain file types, select item 'System Settings' on main menu (figure 2.1.2), then click on the button 'File Types' (figure 4.6.1.1), screen like figure 4.6.4.1 will be displayed to show you existing file type list.

Figure 4.6.4.1

If you want to defind a new file type, click the button 'Add File Type' on figure 4.6.4.1, screen like figure 4.6.4.2 will be seen. You could input file extension and file type on it. For existing file types, you can select from the drop down list, or you could input your new file type. Then, click on 'Save' button to add a new file type. You will be switched back to the file type list, and your newly added file type will be shown on the list.

Figure 4.6.4.2

To modify a file type, click on it's file extension or file type on the list, then screen like figure 4.6.4.3 will be displayed. Details of selected file type will be shown, just modify it's data, and clicking the 'Save' button will update the selected file type. To delete a file type, click cross icon on the 'Delete' column of selected file type in the list (figure 4.6.4.1), a dialog box will show up for you to confirm the file type deletion. Clicking on 'OK' button will remove the selected file type record.

Figure 4.6.4.3