In most cases, you will want to leave this set to Heavy or mixed, but for footage with very simple, very regular motion, or with no motion at all (ex., a slide show), setting it to Light or none will result in a more optimised GOP structure suggestion. 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).ĭescribe the amount of motion in the footage Two stereo sound tracks count as two streams.
A 6-channel surround track counts only as one audio stream. This refers to the number of audio tracks not to the number of channels. If you will be using a different audio bitrate, enter it manually. A few common presets are included in the drop-down list. Most other formats (ex., Dolby Digital, MPEG audio for DVD or SVCD, etc.) can use different levels of compression.
The VCD MPA preset sets the bitrate to 224 kb/s (as used by VCD MPEG-1 audio). The DVD PCM preset sets the audio bitrate to that of 48-kHz, 16-bit, stereo uncompressed sound. 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.ĭetermines resolution, frames per second and GOP limit If your disc will have more than one clip, enter the sum of the lengths of all clips. Here is a brief description of the different areas: In this calculator, all values that are displayed in bytes (indicated by an uppercase "B") use a factor of 1024, and all numbers displayed in bits (indicated by a lowercase "b") use a factor of 1000. For this reason, a "4.7 GB" disc will typically appear as having only 4.37 "gigabytes" (technically it has 4.37 gibibytes, or GiB), but a bitrate of 9.8 Mb (megabits) is equivalent to 9800 kb (kilobits). Bits are nearly always calculated using a factor of 1000 (not 1024). Note that when describing the size of media (ex., the size of a DVD), a gigabyte is usually considered to be equivalent to 1000 megabytes, whereas operating sytems normally consider that one gigabyte is equivalent to 1024 megabytes (the same is valid for kilobytes, megabytes, etc.).
#Bit resolution calculator update
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. If you see the message ENABLE SCRIPTS, that means that your browser does not support JavaScript, or that for some reason it is not working correctly. All the calculations are done in your browser, by a script, therefore you need a browser with JavaScript support (and script execution must be enabled). 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).
0 kommentar(er)
