Media Compression
Prior to this task, I had a vague understanding of the definition of compression and frame rate. I had an understanding, although not a very deep one, of what compression entails due to my experience in digital art and having files be too big to send or upload, and the discussion of frame-rate often comes up in relation to video games and animation. Entering this task, I had a basic understanding but I had still managed to glean more information on the topic that may be useful in the future.
One such piece of information from our first video was the introduction of bitrate. Before watching the video I had only heard it in passing without much concern for it. The video explains the relation between image quality and file size to bitrate, and how a lower bitrate can mean a smaller file size at the risk of a lower quality image. While this information was learned with a certain ease, the rest of the video had proven to be more difficult. As such, the only other information I was able to process was the explanation behind the appearance of videos and how data can be corrupted. In addition to this video, there was text accompanied with the provided videos which mention that compression of a video can affect different aspects of a video. One such aspect is the frame rate.
The frame rate is often summarised as the number of images, or 'frames', that are compiled to create a video sequence. This is measured in 'frames per second' or 'fps'. Our second provided video is a visual representation of how different frame rates can look. The four rates presented are 60fps, 30fps, 15fps, and 8fps. There is a stark contrast between 60fps and 15fps, let alone 8fps. However, it was difficult to exactly see a difference between 60ft and 30fps. Perhaps to someone with a keener eye, it may seem more obvious but regardless the video made its point fairly clear in demonstrating how fps may affect a video.
Similarly, compression can have the same effect on audio. Our third video demonstrates the effect and explains to the viewer what is occurring. While informative, watching the video proved to be rather tedious as they go into more detail than I would care to know in all honesty. The same can be said for the next two videos, although they are less tedious to watch.
The next two videos go into detail regarding 'video files, codecs and containers' and 'file sizes'. While these videos were more engaging compared to the video discussed before, it compiles a large amount of information into a relatively short amount of time. I can be helpful however when not looking for a specific answer to something, it becomes rather banal. As such it was rather difficult to gain any significant amount of information.
Techquickie, 2014. Video Compression as Fast As Possible. [video] Available at: <https://youtu.be/qbGQBT2Vwvc>
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