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Odd AVI issue
Anyone know why I have a blurriness when I render to an AVI? I am working in HDV 1440x1080i, I have comped about 20 layers from a PSD with track motion on each, pulling into a “poster”. When I render to the native format it all looks great. When I render AVI in YUV format, great, (SD or HD). When I render to AVI DV-widescreen I get blurriness around the circles in my composted layers….I can render out to MPEG2 and all is fine as well…it is only in a compressed AVI that there is issue. At this point I am lucky that the TV station takes MPEG 2 as well. I have tried with “reduce interlace flickering” on and off on all tracks, stretch to fit screen on and off, same issue. Rendered in Vegas 9 and 10…no diff…
Any ideas?
Thanks!Scott Francis
Mind’s Eye Audio/Video Productions -
6 Replies
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This could just be the limitation of the DV codec. It’s quite bad once you’re use to seeing HD. 😉 DV only uses a 4:1:1 color space whereas MPEG2 uses 4:2:0 so I would expect the MPEG2 to look better. I’m just guessing here but DV never did give crisp edges to graphics. Try using a little sharpening if you must render to DV.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks John, I am trying to upload for TV spots and AVI’s tend to be what they want. The other issue is the YUV AVI format looks great but is HUGE for FTP upload…any ideas? BTW I ALWAYS use sharpening when I go to a non-HD(V) format, really helps to keep some of the “crispness”!!!
Scott Francis
Mind’s Eye Audio/Video Productions -
I would render to YUV or Uncompressed and send it to them a hard drive. If they accept MPEG2, use a high constant bit-rate and it should look fine.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Hard drives are out…this is for a “low paying” client anyway…if you know what I mean..So a CBR is better than VBR for TV spots? I will try that… any idea for what to set it for? And should I also do a 2 pass or not…I always do when going to MPEG’s anyhow!! Thanks!!!
Scott Francis
Mind’s Eye Audio/Video Productions -
[Scott Francis] “.So a CBR is better than VBR for TV spots?”
CBR ensures that a constant quality is used throughout and nothing gets compromised because of lack of bits.
[Scott Francis] ” any idea for what to set it for? And should I also do a 2 pass or not…”
There is no two-pass with CBR because it’s a constant bit rate. Only VBR has two-pass because it has to calculate how to vary the bits. I would use CBR 15,000,000. That should be pretty clean. If the file is too big to upload try less but don’t go below 9,000,000.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks John, wasn’t sure if there was a 2 pass in CBR and didn’t have Vegas open to check…appreciate all your input!!!
Regards
Scott Francis
Mind’s Eye Audio/Video Productions
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