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Project Properites, Interlacing and Vimeo HD
Hello,
I was just reading this article:
https://eugenia.gnomefiles.org/2007/11/09/exporting-with-vegas-for-vimeo-hd/
In it, it says to create an Interpolate setting in the Project Properties De-interlace method for any HD video with Vimeo ambitions.
I have a couple questions about this:
1) Can you change these settings after you have finished an edit, or is it crucial they be properly set before you begin, as stated in the article. Vegas lets you adjust these settings any time, so just wondering. Similarly with other settings in this dialogue box, such as rendering quality, etc. Will they still “work” if you set them after you’re done with the cut?
2) What is the difference, anyway, between Interpolate, Blend (which it automatically switched to later on after I added a video track, though it was set to None when I began), and None? The only video I have is an AVI file that was actually rendered from a previous Vegas edit a few years ago. I have done some basic video effects to the AVI and am now rendering it back out. The original source camera on the footage is a 16mm film transfer to video.
3) Finally, when I render out, the H.264 codec which Vimeo recommends does not appear to be an option. The article above suggests two codecs, Sony and Mainconcept, but are these natively installed in Vegas? I do not see them.
Jaxon
Vegas 7 Pro
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4 Replies
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Sony and MainConcept are definitely available in Pro 8… not sure about Pro 7 as 8 was the first Pro version I used. Possibly the confusion may be that Vegas never calls H.264 by that name, unless it’s buried in the help documentation. They refer to it as AVC.
I’ll leave it to someone more knowledgable to comment on the different blending methods for interlaced video. If the source file you’re using is already rendered as progressive scan, the interlace settings might be irrelevant. Not clear to me whether that is the case with the clip you mentioned, though.
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I made a little video for Vimeo a while back that covers this for a general audience and it’s got some background on the topic:
More specifically, in Vegas:
* Interpolate means you toss away one interlaced field and duplicate the other to create your progressive frame (at the cost of half of your resolution).
* Blend means the two fields are averaged together into the progressive frame.
* None means the two fields are just glued together as-is into the progressive frame. This is probably what you get if you just upload interlaced video to Vimeo. This is definitely not necessarily the disaster it sounds like and is, for the most part, good enough.
Conventional wisdom says that you should use Interpolate on high-motion video (it’ll create sharper edges on fast moving objects) and Blend on relatively static shots. That’s not terrible advice. Honestly though, you can use whatever you want. Sure, blend will result in a softer, blurred look on high-motion, but isn’t that apart of the 24p Magical Mystical Film Look that everyone is obsessed with? So maybe you DO want to Blend high motion. Really the choice is yours. And you can make it at the very end of your project before rendering, but once you settle on a technique, it’s probably better to start with your project using your chosen method.
Some caveats:
1. Toggle the Preview Window to “Best (Full)” to actually see the output frames when fooling around with interlacing settings, however…
2. Do NOT make your deinterlacing decision based on still frames. The only way you can judge is by watching the video in full motion, so Shift+B a section of video to see the results. -
Is there a way to check if a particular piece of footage is already progressive or not?
Jaxon
Vegas 7 Pro
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Sure:
right click > Properties – Media Tab – Field order
Which brings up a great point: you can also deal with interlacing on the clip level. For example, I work with a lot of mixed sources on a typical timeline and generally leave the Project deinterlacing to Blend, but I’ll still Disable resample (Video Event tab in the Properties dialog) on some problematic clips (like one with an isolated, distinct high-speed object in it). Again, you can only see the results with the Preview window set to best and only judge the real result with a full-motion preview.
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