Why is the mpeg file so big??

[MalcolmC]

I have converted a avi. file on like 150mb to mpeg. When its done it became 600 mb. Is there any possibilities to make it smaller. Without cutting it into two pieces.

Thanx for help!

[agzz]

you'd have to re encode it.
but count with 10-15mb / min depending on bitrate ofcorse.

[w00kiee]

i like sefys sevcd filter for tmgenc..you can get it in the tools section to the left

you can also just get a bitrate calculator and figure out how much space you want to give the file and the length of the movie and it will tell you what bitrate to use.. if you dvd player can handle xVCD then you should be ok

but at full VCD your stuck.. you probably had a 60 minute movie that was compressed to 15- megs in avi.. well.. in vcd 60 mins = 600 megabytes

if you lower the bitrate you have a non standard xvcd... but will be a smaller file... i use xvcd alot for my small avi movies.. why put a 300 megabytes of avi onto 2 vcd disks.. they dont need the high bitrate so i cut them down to fit onto one cd.

you can also cut the audio to 112 kbps.. 224 is overkill imo

[MalcolmC]

ok so u mean that I can decide how much mb I want to give a file. But how will it be with the quality

[mijman]

First of all, what are you encoding TO? VCD? SVCD? DVD?
You are converting a 150mb DIVX file (which is already encoded with a rough equivalent to mpg4) and making it mpg1 or 2 (much larger). That is the reason for the size difference.
VCD specs allow only certain bitrates to be used. These are mpg1.
SVCD's are not as standard, allowing for the non-standard XVCD to be created. These are mpg2, and tend to have slightly larger screen sizes (though they don't have to be)

[MalcolmC]

I´m encoding from a avi or divx. I don´t know wich it is. But I´m encoding to vcd. mpeg1.

[Vejita-sama]

If you're encoding to VCD (white book standard) then:

MPEG1 352x240, video=1150kbits/s & audio=224kbit/s

This works out to 1min=10MB. Notice that the bitrate is in kbit/s, that is per second. So the only thing that affects the size of your encoded MPEG is the bitrate and runtime of our source.

The size of the source doesn't matter! Neither the resolution of the source, nor the resolution of the encoded MPEG matter. Only the source runtime and bitrate.

VCD standard 1min=10MB. So a 60min video will encode to a 600MB MPEG.

Since x(S)VCDs are burnt as mode2 data (no error correction) you can store 740MB on a 74min CDR or 800MB on an 80min CDR. Notice that works out to 74min on a 74min CDR, and 80min on an 80min CDR (for white book VCD standard, if you change the bitrate you can fit more or less video per CDR).