This value is multiplied by the source length and the audio bitrate to determine how much space will be taken up by the audio this is then subtracted from the available space to determine how much is left for the video. Two stereo sound tracks count as two streams. This refers to the number of audio tracks not to the number of channels.Ī 6-channel surround track counts only as one audio stream. If you will be using a different audio bitrate, enter it manually. A few common presets are included in the drop-down list. This will set the appropriate GOP limit and frame rate. Select the video standard that your disc will use. If you want to encode each clip with different settings, you will have to calculate the bitrate for one at a time, using the Media size or Other assets fields described below to decide how much space each clip is allowed to use. In this calculator, all values that are displayed in bytes indicated by an uppercase 'B' use a factor ofand all numbers displayed in bits indicated by a lowercase 'b' use a factor of If your disc will have more than one clip, enter the sum of the lengths of all clips. Bits are nearly always calculated using a factor of not For this reason, a '4. Note that when describing the size of media ex. To update the results after editing a value manually, just click on any empty area of the page or press return. The user settings are displayed on the left and the results are displayed on the right or below, if your browser window is too narrow to display them side by side. The calculator is divided into two sections. Alternatively, you may want to create one or more presets with the values you use more frequently see below. That way you won't need to scroll down each time you visit the page. If you want to store a direct link to the calculator, select the appropriate anchor from the menu on the left or click here before setting a browser boomark or 'favourite'. This calculator has been tested in recent versions of Opera, Mozilla Firefox and MSIE the latter has some display bugs, but the calculations should work correctly. After scripting is enabled, you may need to reload the page for it to function properly. The calculator below was originally designed for DVD, but has been updated a few times and can now be used to determine the bitrate values for several different formats including HD-DVD and Blu-ray.Īll the calculations are done in your browser, by a script, therefore you need a browser with JavaScript support and script execution must be enabled.

Audio bitrate calculator