File compression ratio formula

This codec is being promoted for use by video pioneers such as Netflix and Youtube to improve the streaming video quality and experience, especially on slower connections.

There are a lot of different container formats. MP4 is very popular on the web and WebM is an open container format being actively promoted by Google for royalty-free internet use. The file format is just a matter of choice often used along with well-known codecs that work together. Some containers allow streaming video playback while others require the file to be downloaded entirely before playback.

Since these container formats support different feature sets and require some agreement and royalty payment by the manufacturer, vendors tend to prefer one format over another. If you like to learn more here is a detailed comparison on Wikipedia. This container allows storage of multiple video, audio, subtitles, and other metadata, where containers such as mp3 container only allowed audio tracks and a limited set of metadata inside it.

A variant of this format supports progressive streaming , this is the most preferred format for internet video playback. HDR: High dynamic range. Modern TVs and cameras are able to capture greater details of images and video in senses that contain brighter and dark objects. In traditional SDR Standard dynamic range images were either bright or dark depending on the contrast application.

HDR format can, however, capture more information per pixel 32 bits and let the display decide the actual contract at the time of presentation.

This method requires double the amount of storage file size and some advanced compression technique that can impact the final file size when applied. Audio: Some containers allow multiple audio tracks embedded in the video files.

Hence the size of the video depends on no of tracks and bitrate of the audio as well. Encryption: Video security mechanisms such as DRM Digital Rights Management that use encryption to protect playback of the content on authorized devices. For example, Netflix only allows you to play their video only if you have an active membership.

This is often done to implement licensing and prevent piracy. This protection usually increases the file size due to metadata inclusion. Video streaming: Video streaming is a process of watching a video over a network without having to download the entire video file.

This technique often begins by buffering downloading some metadata and the portion of video currently being watched parts of the video and provides seeking and skipping parts that are not being watched. Streaming provides smoother watching experience and requires less network bandwidth and disk storage. There are many methods available on the web to implement streaming. JimMischel I have alreadu done it but don't know them by names.

Am i right? Thanks a lot — Sss. Show 4 more comments. The size of the table depends on how you represent it. You need to communicate your encoding to the de-compressor - otherwise it will not know how to interpret the bits.

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This article has been viewed , times. Learn more An engine's compression ratio is essential to know so that you can tune your car to get the most horsepower out of it. To find the compression ratio, divide the total volume of the engine i. Tip: Many of the measurements you need are provided in the manufacturer specs. Log in Social login does not work in incognito and private browsers.

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Measure the bore in centimeters. Remember that the diameter refers to the width of the cylinder. Write this number down so you can refer back to it later. Find the stroke in centimeters. The stroke refers to how far the piston travels within the cylinder. Move the piston to top dead center, then position the bridge over the cylinder.

Zero out the calipers, then put the piston at bottom dead center by rotating the crankshaft. Open up the calipers until the depth rod is touching the piston deck, then read the number. Determine the deck height in centimeters.

Ensure the piston is at top dead center, then measure between the top of the cylinder and the flat surface at the top of the piston. If your piston is below deck, it adds to the clearance volume. Figure out the piston top volume in cubic centimeters. Use the manufacturer specs for this one or look up the part number online to find the volume. Measure the head gasket volume in cubic centimeters. You may be able to find this information online or in the specs.