Im trying to make a proxy dv video stream with gearshift in Vegas 6, ive loaded the 1 hour M2t clip onto the timeline, the size of the M2t is 11.6GB, i select PAL DV for the converted file, then click on "Entire timeline" within gearshift and click save it to a spare hard drive however the outputted file is comeing out at over 300GB!!!

Is this the correct size or have i got some settings wrong somewhere ?
i knew it was going to be big but an 11gb file into a 300gb one???
any help appreciated

Si