iMedia R093
TA4: Distribution considerations
TA4: Distribution considerations
| Keyword | Definition |
|---|---|
| Distribution platform | a way of getting media to the target audience after it has been created |
| kiosk | a computer that allows users to view media but doesn't allow them to close it or open other apps |
| Online distribution | releasing media via app, multimedia or web |
| Physical distribution platform | showing media via a computer, interactive tv, kiosk or mobile devices |
| Physical media | distributing media via CD / DVD, memory stick or on paper |
| Keyword | Definition |
|---|---|
| bitmap | another name for a raster image (made up of coloured pixels) |
| bmp | uncompressed file format suitable for high quality original bitmap images |
| DPI | the number of ink Dots Per Inch on a printed image) |
| jpg | compressed file format suitable for bitmap images on the Internet |
| pixel dimension | the width and height of an image measured in pixels |
| png | file format suitable for bitmap images that supports transparency (can be compressed) |
| PPI | the number of Pixels Per Inch when an image is displayed on screen |
| raster | another name for a bitmap image (made up of coloured pixels) |
| static image | a single image (not an animation or video) |
| svg | file format for vector images (can be compressed) |
| vector | a type of image made up of shapes and text which can be scaled with no loss of quality |
| Keyword | Definition |
|---|---|
| bit depth | the number of bits used to store each sample. Using more bits increases sound quality |
| mp3 | a compressed audio file format suitable for streaming or sharing online |
| sample | an individual value read from a microphone at a particular moment in time |
| sample rate | the number of samples recorded or played back every second. More samples per second increases sound quality |
| wav | an uncompressed audio file format suitable for high quality editing |
| Keyword | Definition |
|---|---|
| 4K | Cinematic quality video resolution with a slightly wider aspect ratio to UHD with 4096x2160 pixels in total |
| 8K | Video resolution equivalent to 4 UHD screens with 7680x4320 pixels in total |
| aspect ratio | a ratio of the number of horizontal pixels to the number of vertical pixels of an image to give an indication of the shape (e.g. 16:9 for widescreen) |
| avi | uncompressed video file format suitable for high quality video editing |
| frame rate | the number of video still images displayed per second. More frames per second means a smoother, higher quality video |
| gif | compressed video file format suitable for short animations but doesn't support sound |
| HD | High Definition video resolution with 1920x1080 pixels in each frame. Suitable for standard size screens |
| mp4 | compressed video file format suitable for streaming or sharing online |
| SD | Standard Definition video resolution with 480 pixels vertically in each frame. Only suitable for small screens. |
| UHD | Ultra High Definition video resolution equivalent to 4 HD screens with 3840x2160 pixels in total |
| video resolution | the number of pixels on each frame of a video. A higher resolution means a clearer, sharper video but requires more space to store or more bandwidth to download |
| Keyword | Definition |
|---|---|
| compression | reducing the size of a file so that it takes less space to download or store |
| jpg | example of a file format that uses lossy compression for bitmap images |
| lossless compression | a type of compression that can be perfectly reversed to get the uncompressed original data. No detail or quality will be lost in compression. |
| lossy compression | a type of compression that cannot be perfectly reversed to get the uncompressed original data. Some detail or quality will be lost in compression. |
| mp3 | example of a file format that uses lossy compression for audio |
| mp4 | example of a file format that uses lossy compression for videos |
| zip | example of a file format that uses lossless compression for any type of file |