Published on March 31, 2017
Hey guys I’m here this time to tell you all about data compression. Remember when I talked about downloading vs. streaming? Have you ever wondered why streaming uses less data?
It’s all about compression. Think of compression like a vacuum sealed bag. You can fit as many objects into the bag if you place them carefully and maximize the space, and then the package can get even smaller by vacuum-sealing (ie removing the air) from the bag.
For example, you have a file that’s 300MB in size and you want to share with others. You can upload it online as a whole, but for it to be streamed faster some apps or websites will compress it so people can view it even when the whole video hasn’t finished loading yet. Essentially while you upload the full file, not everyone who is viewing the video or photo has to download the full file to view it.
This is like how streaming works. Your favorite streaming site for example hosts large files of several GB each. However when you watch it’s first compressed and sent to you in small chunks as you watch the stream. The faster your internet connection, the less time it takes to load the video. Buffering is when it hasn’t yet downloaded a certain chunk.
Why is this important for your mobile data? Two reasons: data usage and quality loss.
When uploading photos, the whole photo gets uploaded, but when it’s viewed by others the photo is compressed. When you upload and view a picture on Facebook, the image is compressed saving your mobile data, but lessens the picture quality. IG on the other hand doesn’t compress the photo quality, but your data takes a larger hit.
So when uploading videos or images take note of data compression. Facebook tends to compress the quality of uploaded files while apps really meant for photo or video sharing like IG or YouTube have better quality, but use more of your data.
Image Source: https://www.freedigitalphotos.net/blog/tutorials/avoiding-facebook-image-compression/
So now you know what all the hullabaloo about compression is! This will help you save data by knowing where to post your photos and videos and how much of the quality gets saved. Share this with your friends and spread the good word of data compression!