this is the first for me here so if I am wrong then just say so, I wanted to know how would I be able to compress a vcd file. Imean, when I take a AVESQ file from a (vcd)disc and put it on my hard drive then I cant put that same file back onto a disc again. I knw that it has something to do with the compression but why doesn't it work
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VCD has a set bitrate of 1150kbps. You can't change that and stay within the VCD specification. See ' What is' VCD to the upper left for the specification. <<<<<< This means you can't really compress a VCD.
thanks for reply, now how do I get it to go back onto a disc once I have put it onto a harddrive
2 things to keep track of here:
1. Windows CDXA headers
2. Difference between Mode1/Mode2Form1 Data discs and Mode2Form2 Data Discs
#1. When you rip the AVSEQ normally, you're getting the MPEG as a ".DAT" file, but you're also getting a bunch of padding created by Windows (or more likely, not ignored by Windows). Don't use Windows to copy the file. Use VCDEasy, VCDGear, or ISOBuster--all these have special recognition of the fact that these are Packetized MPEG streams in Mode2Form2 CDXA Tracks. What they'll give you will be a true, plain MPG. Much better to work with.
#2. My guess is that you are trying to burn NOT another VCD, but a Data CD. Data CD's would (usually) be Mode1, which have an available user data sector size of 2048bytes, which gives you the Max available CD disc of ~700MB. The MPG tracks on a VCD aren't burned as a standard DataCD, but as Mode2Form2 tracks. These have an available user data sector size of 2324bytes, which gives you the Max available CD disc of ~800MB.
So what happens when you pull a (equivalent)725MB MPG track off of a VCD, which balloons in Windows to 740. Now it's too big to be burned as a data disc.
What to do next depends on what format you want the final thing to be: another VCD? (whether dupe or compilation or edited), an MPEG file on a Data CD?, some other filetype?...
If A--you "re-author" a new VCD and it should take care of the Mode2Form2 stuff for you.
If B--you're going to either have to re-encode to smaller bitrate (and hence filesize), split the file to 2 discs, or put it on a larger disc (Overburned, 90/99min, DDCD?, HDburn?, or DVD).
If C--you're gonna have to give us more info. Who knows???