Compression algorithms (ie: Divx -) or intel indeo or ATI's VCR1 and VCR2, etc.) break the video color information into 16x16 pixel blocks. THE COMPRESSION ARTIFACTS:Īnother interesting point is the compression you use. If you capture at 352x240 or 352x288 you'll be skipping every second field, which results in only half of the resolution. You can find more information about this in the articles session of Those two fields mean that every frame carries much more than just 240 or 288 lines of information. In fact, every frame of an interlaced video is divided in two fields (the reason for this is a long story that comes from the first TV sets. The VHS video works with the interlaced system (not progressive), which means it draws every frame twice on the screen.

So all those documents were wrong? No, they were inaccurate, or maybe just incomplete. You capture with that resolution and you get a video that looks like shit. If you search through the internet looking for information on the VHS resolution, you will find basically 352x240 at 29.967fps (Frames Per Second) for NTSC and 352x288 at 25fps for PAL-M. Any damages caused to your system by the procedures suggested bellow will be your problem, not mine. This is provided just a a guide to help you with your captures. Talking about risks, I will take no responsability about the procedures described in this document. LEGAL STUFF:īe aware that you MUST have the rights to make a copy of any copyrighted material, such as movies or video clips. I'm no expert in digital video, but I've been through the painfull process of chosing a resolution for my captures, and I'll share my experience so you won't waste all the time I did capturing and compressing over and over. Of 2: English Version INTRODUCTION:Ī few different factors must be considered when capturing video from a VHS source.

Mp4 compression rate setting