If you’ve ever played around with the different microSD recording settings or you’ve spent a fair amount of time in our FAQ, you may have noticed that you can store up to seven more days footage on your microSD card when you switch your live stream from HD to SD. That’s about 10 full days of continuous recording always accessible in your camera’s Playback section!
How exactly does switching your live stream from HD to SD allow you to store over three times the amount of identical 1080p footage? The SD option on the live stream uses something called file compression.
To explain, imagine a picture your yellow Labrador Retriever, Sandy. In the picture, each row of pixels making up her yellow body are stored in the file as “yellow pixel, yellow pixel, yellow pixel…” over and over until all the pixels in her body have been written down. Writing out the code for each “yellow pixel” takes up quite a bit of space, but wouldn’t it just be easier to say “500 yellow pixels”? Grouping together identical parts of the image like this can save a lot of space, and the SD option does a similar process when compressing the live stream.
With the SD live stream, the compression process finds objects that don’t move and don’t update their images in frames as much as moving objects and tries to compress the still frames similar to the process described above, all while keeping the 1080p resolution. While doing this, sometimes the compression process can cause the feed to appear to not update as often and things that barely move, like shadows or hanging objects, may appear to be frozen for a few seconds.
Despite what seems to be the live stream freezing, the SD compression is great for connectivity! Because the video file sizes are smaller, the speed requirements are lower and switching to SD may help with connectivity issues.
It doesn’t matter whether you choose to keep your feed in the smoother HD stream or you decide to switch to SD for practicality. It’s always good to be aware of how file compression works and how it can help you in your daily life. Whether you’re recording the live stream from your Wyze Cam or trying to get an email attachment to fit within size limits, file compression can’t be beat when it comes to saving space!