I have downloaded some movies from internet. They are in mkv format. I want to convert them to a VCD format. Please tell me what is the extension of VCD as i will be playing it on my DVD player. Secondly pls tell me a software for converting the same and it should be such that the software is able to tell me the outfile file volume (in MBs).
Regards
First convert them to avi and then use Nero to write them as VCD.
VCD’s have extension .dat but that won’t work directly if you convert it. That has different encoding.
Format Factory will do you job.
you have a DVD player so convert mkv to DVD
the easiest software is convertX to DVD
I had converted the files to avi and put it on CD RW and also on DVD RW, but both the cds did’nt worked on my DVD player.
Did you burned those CD/DVD as Data DVD, then the chances are it won’t work.
For viewing in VCD / DVD Player, you need to write the AVI in VCD Format, use Nero to create VCD.
And for DVD it’s more complex, you need to write that in Video DVD format, what Nero Vision does.
Yes i had written the CDs in data form. But if i use nero to write avi as vcd format it first converts the movie in its own vcd format which takes lot of time.
That’s write, as I said in my first post both VCD and Video DVD have their own encoding, so Data CD / DVD won’t work.
You’ll see sometimes they are working fine, but that’s luckily or because the DVD / VCD player supports the format / encoding which he/she used. But in general case it won’t work.
See, when you’ll bring(rent / buy) VCD’s and will open in computer you’ll see many folder one of which is MPEG on which the video file exists with .dat extension.
And for DVD’s you’ll see Video_TS and Audio_TS folder on which you’ll find the videos have extension with .vob and some other files are there too.
So if you are just writing the AVI’s directy as data CD / DVD it simply won’t work.
Do it properly and you’ll surely success 
But there must be a software other than nero which can do that thing. So which software can do this faster?
There are many burning softwares out there, but the time taken is for encoding, which won’t get solved by using any other burning software.
Encoding needs processor power(very imp.) and memory(less imp.)
use nero vision> add the files>select menus>encode & burn
this will convert the files to dvd format so that it can be playable in any dvd player. mkv files may not be supported by nero vision, in this case convert the mkv files to avi using any video converter( you can use xilisoft video converter or total video converter ).
Alternately you can use ulead dvd movie factory to convert these files to dvd format.
It is better to convert these to dvd format, vcd format will ruin the video quality as it will downscale the video to 352x288, whereas dvd will maintain 720x480, which is of-course better then vcd
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PS: 800th post 
If you have Haali Spliter installed you can directly convert them to VCD using TMPGenc, for more information head over to Doom9. This will save you time converting between formats and the lesser number of conversions better the quality
But what abt the size of movies, can i fit 5 movies in DVD and 1 in a single VCD.
^^I guess that depends upon Source Size, Source Encoding and Destination Encoding.
upgrade to a divx/mp4 supporting dvd player. they are available below the 3.5k mark from more than 2-3 years and the cheap locally made ones are even available for 1.5k.
Beats hours of encoding/ converting to lower quality formats and not enjoying the picture quality after finally burning it to a cd/dvd.
Yeah you can, but for that you will have to decrease the bitrate and the resolution of the movie thereby decreasing the overall quality of the movies