The CASUS system saves the multimedia data in the form in which you import it into the program. This means that your pictures and movies are not automatically compressed. The reason for this is that only you as the author can decide if the substantial information of the multimedia data should be kept or not. The more fluently the data appears on the screen the more fun it is to study with CASUS. Loading a 100 kb image from the database only takes about one second. It is not possible to upload images bigger than 2 MB or movies of more than 10 MB! In order to reach a compromise between the quality of the picture and the time taken to load it, we have put together some advices based on our experience. We would be pleased to hear any comments or suggestions of yours on this subject.
Already when recording the data, you can be aware of compression compatibility. In general:
Especially for movies:
Generally the finished product is not as good as that seen on the camera screen. It would be ideal to test and optimize the whole productive procedure in CASUS just once from the recording to the presentation.
We assume that you can use some pictures from your store of slides. Experience has shown us though, that it is necessary to renew the illustrations from the patient in the case (original findings to histology, technical tests etc.). It is easiest to make new slides, which can then be further used by means of a slide scanner. Digital cameras are now cheaper to buy than before, and they save the need to scan the pictures. When adapting pictures (re-scaling, cutting out details,…), we recommend for example Adobe Photoshop®
Video sequences can be recorded in any available format, preferably with a digital camera. The size of the film should be made compatible to the capabilities of the server and network. But playing time of more than 2 minutes per card should be avoided due to motivation reasons.
To play videos and audio sequences Apple Quick Time Version 4 or higher is neccessary. You can download Apple Quick Time for free from Apple.
E.g. auscultation sounds should be made available in a digital form as far as possible (sound storage medium). Format and Compression: Same as for movies.
Text can be written outside of the CASUS authoring system. You can then incorporate the written text into the intended fields in the editor with copy and paste. Problems can occur when using special characters. The most reliable procedure is to type the text directly into the authoring system.