DVX3 files MUCH bigger than AVCHD MPEG-2 - help!

[djewesbury]

Hi there

Hope someone can give me some advice.. fairly urgently..!

I'm encoding several hours of AVCHD MPEG-2 HD files to DVX3 to use in Avenue. This is the first time I've used HD with DVX - and I have a problem. The encoded files, which I was expecting to be neat dinky little things, are MUCH bigger than the original .MTS files - by way of example, a 1'18" .MTS comes in at 214.5 MB, but the corresponding DVX3 encode is a whopping 1.59 GB. This could be a big problem, surely?

I'm doing batch encodes with Adobe Media Encoder.. and the files are 1920 x 1080, 25fps - standard HD in other words, nothing fancy.

Is this normal? Or have I made basic error? These are NOT encoded with HQ, they're 'Normal' quality files with no Alpha.

Should I just not worry about this? Any clues would be appreciated.

Thanks
Daniel

[Zoltán]

don't worry, long hi res DXV files are big.

[djewesbury]

don't worry, long hi res DXV files are big.

Thanks.. reassuring! Didn't expect such a big hike, but will see how it plays..

[djewesbury]

I've noticed that the bitrate of the original MPEG2 file is 20.7 Mb/s, whereas the DVX3 bitrate is 158 Mb/s. I haven't limited the data rate of the encode - should I..? I don't want to do that if I'm just making trouble for myself.

[Zoltán]

I don't think you can limit the data rate for DXV files, the codec setting has the 4 options you can use to tweak quality and alpha, and I think that's it.

to get smaller files you'd have to lower resolution, or frame rate.

[djewesbury]

OK.. AME is being very unhelpful at present but I'll persist and see what happens. Thanks.