It may not seem much (1024 - 1000) but it does make a significant difference over a 2 hour film when calculations are incorrect! But both DivX (version 4 upwards) and MP3 work in kb, which is actually 1000 bytes. Your standard output sizes are worked out normally in MB’s, which are 1024 bytes per Kb (1024MB in a GB etc). Working out bitrates is not as simple as 1-2-3, namely because you are working with very large numbers.
#Mplayer dvd install
The QT project is not maintained any more, however the calculations still apply (should you decide to install it). I once wrote a simple QT program to do this called DivxCalc, which I have converted to an online web calculation. The bitrate used & the output filesize are directly linked, so we have to calculate the right bitrate to give us the intended output size. Why you ask? Well, bitrate is the quality of the video… the higher the quality, the bigger the output filesize is. OK, so we need to work out a bitrate for the video. The simpler solution to this is to rip just one chapter when testing, otherwise you have to wait several hours each time you want to see how the result turns out -) Of course I will not suggest ripping an entire DVD each time you want to test something, as this does take quite a while to do. So we now have a working MPlayer/MEncoder with DVD support, and the object is to rip this DVD to your harddrive in a 700MB “DivX” file. There are of course several ways to rip a DVD to MPEG-4, but I will explain the method that I personally use, describing the technique and use. I have chosen to create this rip using lame for MP3 audio, and XviD for it’s MPEG4 codec. MPlayer & MEncoder support many different types of audio and video codecs, both for reading and writing. It uses console commands for this (there are GUI’s for it, but you will have to search yourself for those). MPlayer comes with a very handy tool called MEncoder, which is used to convert one video/audio stream into another. If not, please refer to the MPlayer documentation before going any further as it will not work if you are missing any of the above features. You will need a working installation of MPlayer with lame (MP3), Xvid & DVD support built in.I presume you have basic understanding of the Linux command-line.
#Mplayer dvd how to
This is not a tutorial of how to use MPlayer, but how to use MEncoder to convert a full DVD from around 6GB into an MPEG-4 (also known incorrectly as DivX) file of about 700MBs.This tutorial uses the Xvid video codec due to it’s backwards compatibility with standard hardware DivX players.
This is a rewritten tutorial (December 2008) replacing the previous one I had which was severely outdated (from the end of 2004), and was written with MPlayer v4.1.2.
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