Forum Replies Created

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  • Jeff Brown

    August 6, 2008 at 2:39 pm in reply to: HDV – export to 24fps tiff images

    I’m not in PAL-land, so you may get better advice elsewhere, but:
    The 25->24 conversion is usually done “directly”, ignoring the speed change that will result; the footage will slow down 4%. What is a “con” is that your sound will no longer be in sync. And a 4% change in audio will be noticeable, so the audio will require conversion. As to tiff frames, they are just a series of stills, so there is no actual “frame rate” to them.

    -jeff

  • Sounds like you are missing the necessary codec for the QuickTime files. Inspect the file properties (using QT Player) and see what codec is needed; most you can download from the appropriate vendor.

    -jeff

  • Jeff Brown

    July 29, 2008 at 5:25 pm in reply to: Greenscreen & rotating camera 90 degrees

    That’s a not uncommon approach. Less “empty” space means more resolution to work with. Although, it does add a bit of overhead to the greenscreen comp (scale & rotate), along with possible softening due to scaling. If your talent really nails the first take, shoot it both ways.

    -jeff

  • Jeff Brown

    July 23, 2008 at 3:17 pm in reply to: Faux High Speed Film

    You may want to look at reVisionFX (dot com) Twixtor, as it goes way beyond frame blending. It can take some effort to get clean results, but it’s very impressive. I use it in Combustion; not sure if any functionality is compromised in Premiere, but I think there is a demo version.

    -jeff

    Jeff Brown
    Fire Mist Media
    http://www.firemist.com

  • Jeff Brown

    July 21, 2008 at 1:09 pm in reply to: hot spot in footage

    You can also try a luma key on the duplicate layer to isolate the highlight, then color-correct that.

    -jeff

  • Jeff Brown

    July 11, 2008 at 1:28 pm in reply to: Lines not straight

    Dan– on reconsideration, you may just be up against the relatively low resolution of video. A 5-degree swing will take horizontals to a slight angle, and if there are fine lines, they will show artifacts.
    Photoshop has pretty good scaling; try “perspective-ing” a still frame in that, and if you still see artifacts, it’s probably time to live with it or increase the swing angle in hopes of reducing the stepping.

    -jeff

  • Jeff Brown

    July 10, 2008 at 2:16 pm in reply to: Lines not straight

    I believe that’s due to Premiere’s less-than-optimal (i.e., lousy) scaling algorithms. AfterEffects (or some other compositing app) would do better for you if you have that option.

    -jeff

  • Jeff Brown

    July 1, 2008 at 12:46 am in reply to: Good camera for SD Green Screening

    One suggestion: Rent a panasonic AJ-SDX900, and shoot DVCPro50.
    Or rent a Sony DigiBeta package. Both will give you nice footage to work with.
    My opinion– Unless you are shooting more than 30 days a year, you’re probably better off renting.

    -Jeff

  • Jeff Brown

    June 25, 2008 at 12:57 pm in reply to: premiere sound/encore too low!

    How are you viewing the DVD product? Windows Media Player has some problems with audio levels (DVD levels play back low).

    Typically, people mix so that audio peaks at -12 dBFS.
    -jeff

  • Jeff Brown

    June 22, 2008 at 4:30 pm in reply to: Preview Video has significant grain/noise

    Does the noise appear on an external monitor? If not, I would suggest checking your general preferences and setting the desktop display the “other” way– one way is “OpenGL Draw Pixels”, i forget the other option. But switching that setting might make a difference, as it could be a graphics card issue.
    If you have noise on an external monitor image as well, then that would point to a more serious issue, as that would affect your final output.

    -jeff

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