#Ulead video studio 9 and .vob series#

Think of an MPEG as being the motion equivalant of its still image cousin a JPG. Eventually the completed AVI files will be compressed into an MPEG (Lossy) format to create the DVD VOB files.ДVD VOB files are MPEG files but also contain slightly more information than a normal MPEG file which is why simply renaming VOB to MPEG does not always work correctly. Normal video editors such as the Ulead range, Adobe Premier, Pinnacle, Sony etc are designed to work with AVI files (lossless) and so editing AVI files should not produce out of synch problems. (Before anyone jumps in I am keeping this simple and easy to understand.) Smaller in file size but retaining the quality of the original BMP. Think of these compressed AVI files like you would a TIFF file in the still image world. Those files known as lossless are grouped together into what are termed AVI files (Audio/Video Interleaved.) There are many CODECs in existence some are what are known as lossy and others lossless. We will also need something to decompress the files again later so we have COmpression and DECompression and end up with something called a CODEC. So we introduce something called compression to make the file sizes smaller. Wow thats going to be huge and one hours worth of video will devour some 60 gigabytes of Hard Drive space. Now then lets just imagine 25 BMP pictures every second each measuringД§68x576 pixels. The reason for the difference between PAL and MPEG is due to the electricity supply of that particular country. Linked to these pictures are sound files. The NTSC system comprises of almost 30 pictures and so you get just under 30 frames per second (29.97). In the PAL system 25 pictures every second made up of 2 frames upper and lower to make 1 complete frame and so described as 25 frames per second.

#Ulead video studio 9 and .vob series#

Video is a series of still pictures passing in front of your eyes very fast. but in a nutshell here it is again kept simple. There are several posts concerning this and a search will find plenty of information. In the list of top 10 frequently asked questions this one would rank number 1.

You havent said so but I bet that you are editing MPEG files.