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Field timing issues with HDV Vegas Rendering
I’m getting strange intermittent problems with my renders. I’m working in Vegas 10c on a video that was shot by Z7U and Z1U cameras. Its a mixture of Progressive and Interlaced video on the timeline. the footage looks fine on the timeline, but when I render out to HDV or Blu-ray MPegs (haven’t tried other formats), I get an assortment of issues that all seem to apply to some of the interlaced footage in the edit. At times it seems as though it is skipping a frame every 1/2 second or so, and at other times, a shot will be a double image, as if one field is a frame or 2 off of the other in timing. I’m using the vegas preset settings for a 25Mbps blu-ray render or 1080i HDV output. Project settings. The footage was shot at 1/30th shutter, but this is not the typical slow shutter motion blur.
PC: 2.4Ghz Intel Core2quad, 4Gb, Win7 64bit.
Click here to download a short sample of what I’m seeing (much better than just looking at the stills: https://www.neighborsvideo.com/temp/problems.mp4
Here are some stills:
Source footage (how it should look)
Same frame taken from render (Notice the image doubling)
Any help is much appreciated. I need to get this video on a Blu-Ray.
Thanks!-Tim
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6 Replies
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It looks like your rendering an interlaced clip as progressive with Method set to blend.
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Danny, do you need to select match media to project settings in the project properties as well? I believe it is unticked by default.
My system specs: Intel i7 970, 12GB RAM, ASUS P6T, Vegas Pro 10 (x32/x64), Windows 7 x64 Ultimate, Vegas Production Assistant 1.0, VASST Ultimate S Pro 4.1, Neat Video Pro 2.6
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I never check that box. I usualy play my videos from a computer so I always deinterlace 1080i, where DVD and BR players will do it for you. I set my project settings to progressive, bes,t interpolate (if the movement in the video inst to fast.) blend if it is fast. That double image footage will look smoother than interpolated footage.
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How would you suggest rendering if you have Progressive and Interlaced footage mixed on the same timeline? It’s all HDV footage. Does it make any difference what the project properties are prior to render? The confusing thing about this is that the problem is not consistent. Some interlaced shots come out ok while others look like this. Should I render in Preview mode?
Thanks
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I would set the project settings to the format of your best quality clips. If that’s progresive, then I would deinterlce the others and then add them to the timeline.
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I resolved my problem and learned something new about Vegas in the process. When I was on my shoot, I switched from progressive to interlaced on the same tape, the captured without scene detection, so each tape was one large file. When I looked at the properties for each of my captured files, they register as either progressive or interlaced. Unfortunately one of the files was both but, since it has to be labeled as one or the other, Vegas had called that one Progressive (I presume because it began with progressive footage). So when the render hit interlaced footage from that source file, it mishandled it, treating it as Progressive footage.
solution: I rendered that entire source file out to an interlaced file and, from within my edit, I replaced the “progressive” file with the interlaced file (pointed it to the new file).
lesson learned: don’t switch between progressive and interlaced on the same tape unless you plan to capture with scene detection enabled.
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