From: Steve Mack <[EMAIL PROTECTED]> Subject: Re: Vidcap, Adobe Premiere, & RealProducer 7.0 Yvan - We share your pain. 5.1 is great when it works, and a complete pain when it doesn't. We've seen the same behaviors you describe. I won't speak about those, but will chime in on the RP7.0 issues: 1) Capture at 15fps, 320x240, and render same. Bump up to 30fps if you're producing for broadband. Do all your resizing in RP 7.0. Use the high quality resize option. Rendering out 4 different AVI files is ridiculously time consuming, and the RP encodes at between 4-8 times real time. The quality is just as good if not better. The reason capture cards don't do a good job of capturing at odd frame sizes (like 176x132) because there isn't enough hardware on them to do a good job of anti-aliasing while they capture. Aliasing is the 'jaggy' phenomenon you talk about. Full screen in computer talk is 640x480, and sure, you'd have better quality if you captured full screen, but the data rates are so crippling (200 + Mbps!) that you generally start to drop frames. Capture at 320x240 - the cards just either throw out every other pixel or do some simple pixel value averaging and usually look pretty good. 2) 2-pass, VBR, and Loss protection are all recommended by the medialab here. Takes a bit longer but worth it. Personally, I wouldn't mess with the Advanced settings - unless you *really* understand VBR and know your content inside out. Our codec guys put a lot of effort into the default settings. >From: "Yvan Gagnon" <[EMAIL PROTECTED]> >Subject: Vidcap, Adobe Premiere, & RealProducer 7.0 <snip> >QUESTIONS: > >1) I was told that I would get better end results if I was to capture at the >TARGET FRAME SIZE. However, my initial attempt to do this resulted in very >unacceptable looking, jagged-edged video >2) perhaps get better quality video if I were to initially capture my footage >at 640x480 instead of 320x240. >4) What are the recommended settings for the new RealProducer 7.0 beta? I >have all of the boxes checked under the "Video Codec" tab in the >preferences. Should they NOT all be checked? The descriptions all seem to >imply that they enhance quality instead of degrade it. Is this not the >case? Also, are there any tweaks I can make under the "Advanced" tab that >would get me better results when encoding? Lastly, does the video resize >feature when encoding (Option | video settings) work as well as when using >multiple frame-sized videos as the sources for the different bitrates? ******************************************************* The RealForum is an email discussion group focused on using RealNetworks products. The RealForum is a place to post messages about the best methods for creating content using RealNetworks technologies and the planning and implementation of streaming-media web sites. Archives of RealForum can be found at http://realforum.real.com If you ever want to remove yourself from this mailing list, you can send mail to <[EMAIL PROTECTED]> with the following command in the body of your email message: unsubscribe realforum or from another account, besides the address you subscribed with: unsubscribe realforum <[EMAIL PROTECTED]>
