It is wet-finger guesswork because except for raw video, the actual required bitrate depends heavily on video contents. The “H.264 baseline” button represents encoding with H.264 without advanced options like trellis, CABAC, RD, etc., which also would only be appropriate in limited situations.įor giggles, the “Raw” button shows bitrate for raw (uncompressed) video-try it and you'll see why codecs were invented.īeware that this is not exact science. The other buttons are legacy: the “MP4” button represents encoding with the old MPEG-4 based Xvid or DivX which only makes sense if the target is some old constrained playback device. (If you don't know what a codec is, I have another page that explains this.) Most likely you should use either the “H.264 high” button because practically everything nowadays sypports the ‘high’ H.264 profile, or the “H.265” button if you are encoding with that codec. The ‘Suggest bitrate’ buttons try to give an OK average video bitrate estimate for a movie, based on given dimensions, frame rate, and the video codec. In case of doubt and if the file must fit within a certain size, it's better to use a conservatively high overhead estimate. In reality there will also be a one-time overhead for the file itself and metadata. This calculator assumes overhead is proportional to the length of the video, which is a simplification. This is heavily dependent on the container format, codecs and parameters, and includes any extra streams like subtitles. Overhead is what is left of the file after removing actual video and audio data.
448 KBPS TO MBPS SOFTWARE
In case of doubt, assume KiB, MiB and GiB values: if the software does use kB, MB, and GB, your file will be slightly too small, which is not as bad as too large. Unfortunately a lot of software still uses the ‘MB’ symbol while they actually mean MiB. If you don't know the difference between a MB and a MiB, check out my other page that explains it. Mind that sizes are given in two ‘flavours’. Just to give an example: with H.264 there is no way to fit a normal two-hour film on a single CD-R at anything higher than DVD resolution without making it look or sound awful, so please do not try it. If the suggested video bitrate is much higher than the actual one (about double or more), video quality will probably be unacceptably bad. Click the appropriate ‘Suggest bitrate’ button (see instructions below). Then enter the film's image dimensions and frame rate in the lower part of the calculator. To do this, do the same as above to calculate the actual video bitrate and write down or memorise this number.
448 KBPS TO MBPS DOWNLOAD
Or likewise, if you want to avoid wasting download time on a file that is just too small to possibly offer good quality. You can use this to either represent multiple tracks (for instance languages), or multiple discrete surround channels.Īnother useful scenario is to determine whether a video file can fit in a fixed-size medium like a DVD-R at acceptable quality. Total audio bitrate is the number of audio tracks times the given audio bitrate. To do this, enter the duration, audio bitrate and target size, and press the “Video from time,size,audio” button.
448 KBPS TO MBPS MOVIE
The classic use case is to determine the required video bitrate to fill a fixed-size medium like a CD-R or DVD+R, given a fixed audio bitrate and movie duration. If you prefer either or the other, or if touch UI detection should fail, the button below the calculator allows to override it. Highlighting behaviour differs between desktop and touch browsers due to differences between a cursor- or touch-driven UI. When clicking a button or having edited a field, fields updated due to this action will flash bright yellow. Fields used as inputs for a button or edit field are highlighted in green, and output fields in pale yellow. This calculator is intended to make bitrate calculations for encoding movies easier.