winavi output size

[moults]

I have an 8.4gb video downloaded from my minidv camcorder. I want to burn this to a dvd but when i run this through winavi or mainconcept the resulting video is only 1.5gb.

Obviously this reduces quality, any ideas how to make the file output larger (4.5gb) so it can be burnt without such a drastic reduction ni quality.

[jimmalenko]

The AVI that comes from your camcorder is probably 25MBps DV-AVI w/ 1536kbps PCM WAV audio. I'm guessing your video is around 38 minutes long.

Now even at the max compliant bitrate for DVD (10.08Mbps), this video would only take up around 2.8GB by my calculations. But you shouldn't need bitrates that high to keep similar quality levels - I'd suggest that WinAVI is crap and that you're using the wrong settings in MainConcept. 1.5GB is probably 5000kbps video and 224kbps audio which should produce a reasonable result provided your source is free of shake and noise.

Are you noticing a visual reduction in qulaity, or are you just going by file sizes alone ?

[moults]

Thanks for the prompt reply.

the video is approx 44 mins long, can you advise me on the correct mainconcept settings.

I was mainly looking at the file size but you can certainly see the reduction in quality.

[guns1inger]

The BitRate Calculator is your friend. You can find a selection of them here -> https://www.videohelp.com/tools?s=1#1

The Videohelp Bitrate Calculator is nice and straight forward, but requires java. VideoCalc is a nice simple standalone calculator.

[jimmalenko]

File size does not really mean a lot without understanding the difference in codecs.

A bitrate calculator should always be used. https://www.videohelp.com/calc.htm is as good as any.

You should be able to get excellent quality using CBR 8000kbps for video and retaining the PCM WAV audio.

[moults]

You guys are ace. I've just used videocalc and it shows a calculated bitrate of 9576 kbit/s.

Where do i enter this in mainconcept.

[guns1inger]

RTFM, mate. All these programs come with extensive manuals and/or help files. Surely you can find your way now.

[jimmalenko]

[moults]

I realised the last post of mine was stupid as soon as i sent it. I knew where to set the constant bitrate.

I think as it was 1am my brain must have been tired???

An emotional day with my fav football team (Portsmouth) saving themselves from relegation.

Once again thanks for all your help.

[guns1inger]

Is cool. We all have brain fart days

[KBeee]

Is cool. We all have brain fart days

Hmmmmphhhhhhhhhhh

I get brain fart months....