Forum Replies Created

Page 150 of 152
  • Pierre Jasmin

    July 30, 2005 at 10:07 pm in reply to: about HD(1080, 60i) to 35mm Film(24p) transfer

    You say ”
    1. deinterlace: 60i -> 60p
    2. twixtoring : 60p -> 24p
    3. motionblur : to compensate the difference of shutter angle(ie. exposure time) between
    30fps and 24fps, especially for fast moving objects.

    Is this in AE, if not I would need to change the instructions that follow:

    Some start-up cues:
    https://www.revisionfx.com/generalfaqsFieldSupport.htm

    Comp 1: Deinterlacing

    Would worry about deinterlacing primarly on locked-off shots

    option A. No camera motion:
    Set Comp1 to 29.97
    deinterlace 1 frame per field (turning motion masking on)

    option B. Camera Motion
    Set Comp1 to 59.94
    work at double FPS mode

    option C. Ignore FieldsKit

    Comp 2: Drop Comp1 into Comp2, Apply Twixtor
    Set Comp2 to 24 FPS
    if Comp1 case A above in Twixtor set Input FPS to 29.97
    if Comp1 case B above in Twixtor set Input FPS to 59.94
    if Comp1 case C above in Twixtor set Twixtor Fields In to Lower

    You could set Motion Blur Compensation to 0.5 and bypass the next step
    Else set Motion Blur Compensation to 0

    Comp 3 Motion Blur: Drop Comp 2 into Comp3 (if you have not optioned out– You should get a slightly better result that way but it’s one more step)
    Comp Frame Rate 24 FPS,
    Apply RSMB
    So you say you want to go from 60I HD to 24P.
    The last point should be going from 59.94 to 24 (2 fields per frame X 29.97), so is even more significant.

    Set Motion Blur to 0.5 or 0.4 whatever feels visually right to you

    Render 24 FPS.

    Pierre
    http://www.revisionfx.com

  • Pierre Jasmin

    July 22, 2005 at 10:45 pm in reply to: Motion Blur with Shatter

    You might want to try the demo of ReelSmart Motion Blur and simply drop the comp with Shatter in it into another comp and apply Shatter to it

    Pierre
    http://www.revisionfx.com

  • Pierre Jasmin

    July 15, 2005 at 5:56 pm in reply to: Timing issue with Twixtor 4.5 and After Fx 6.5

    Just to add if for some reason you also want to remap sound, the second technique will essentially allow you to use Twixtor for image interpolation and AE for sound remapping

    Pierre

  • Pierre Jasmin

    July 15, 2005 at 5:56 pm in reply to: Timing issue with Twixtor 4.5 and After Fx 6.5

    Just to add if for some reason you also want to remap sound, the second technique will essentially allow you to use Twixtor for image interpolation and AE for sound remapping

    Pierre

  • Yes you have to use the Mental Ray shader
    https://www.revisionfx.com/generalfaqsMVFrom3D.htm
    I am noticing though reading the sub Maya FAQ that it still says “# a value of 1 for Normalize transltes to a value of 32 for our ‘MaxDisplace’ value. 2 –> 64, 3 –> 128, 4 –>256, 5 –> 512, 6 –> 1024, 7 –> 2048, 8 –> 4096”. That’s to be ignored with the latest lm_2dMv version.

    Unfortunately Maya puts the Motion Vectors when you press Keep Motion Vectors into auxiliary channels of an IFF which no app supports so there is nothing we can do with it.

    Pierre
    http://www.revisionfx.com

  • Yes you have to use the Mental Ray shader
    https://www.revisionfx.com/generalfaqsMVFrom3D.htm
    I am noticing though reading the sub Maya FAQ that it still says “# a value of 1 for Normalize transltes to a value of 32 for our ‘MaxDisplace’ value. 2 –> 64, 3 –> 128, 4 –>256, 5 –> 512, 6 –> 1024, 7 –> 2048, 8 –> 4096”. That’s to be ignored with the latest lm_2dMv version.

    Unfortunately Maya puts the Motion Vectors when you press Keep Motion Vectors into auxiliary channels of an IFF which no app supports so there is nothing we can do with it.

    Pierre
    http://www.revisionfx.com

  • Is Motion Blur Compensation set to 0?
    Going from NTSC to PAL is a form of speed-up so if MB is not set to 0 it will add some motion blur to simulate the difference in shutter opening if you like. If you don’t want that make sure it’s set to 0

    Also, yes, particularly when you speed up, you might prefer nearest to blend mode look (your call). Also it will be faster to render if that is an issue for you

    Pierre
    http://www.revisionfx.com

  • Is Motion Blur Compensation set to 0?
    Going from NTSC to PAL is a form of speed-up so if MB is not set to 0 it will add some motion blur to simulate the difference in shutter opening if you like. If you don’t want that make sure it’s set to 0

    Also, yes, particularly when you speed up, you might prefer nearest to blend mode look (your call). Also it will be faster to render if that is an issue for you

    Pierre
    http://www.revisionfx.com

  • Pierre Jasmin

    June 27, 2005 at 9:41 pm in reply to: How do I create a foreground matte?

    It’s mainly an issue if you have a foreground object close to the camera (like someone jumping on your bed) and you follow that person with an hand held camera. In this case with the “proper” camera motion you can create a situation where a large chunk of the image is revealed at a new frame (occlusions). For such case as well more frames per second can help (that is would probably work better from 59.94 then 24P). As well if you are in control of shoot, perhaps try to move the camera slowly and have the actors sort of play their part in slow-mo if possible. In the end it’s all about how much something moves in pixels per frame, so often times, to capture someone jumping on your bed looking at them from the front as opposed to the side will produce better results.

    I am not sure which is faster, to clean your bedroom or to do roto… Seriously, you can use tracking points (the Point Positions) or roto shapes to first help the background registration and make sure that is perfect. Once you add geometry guidance then crank up sensitivity to 100%. If the lighting is low, as is often the case with interior shots, try the Image Prep (edge-contrast) setup. Geometry is animatable (on-off) so you can limit your intervention for that to only the frames and within frames to the frame areas that are bad (read the doc for details). If you have frame edge artefacts, you can try Inverse /Smart Blend mode for Warping.

    Pierre
    http://www.revisionfx.com

  • Pierre Jasmin

    June 27, 2005 at 9:41 pm in reply to: How do I create a foreground matte?

    It’s mainly an issue if you have a foreground object close to the camera (like someone jumping on your bed) and you follow that person with an hand held camera. In this case with the “proper” camera motion you can create a situation where a large chunk of the image is revealed at a new frame (occlusions). For such case as well more frames per second can help (that is would probably work better from 59.94 then 24P). As well if you are in control of shoot, perhaps try to move the camera slowly and have the actors sort of play their part in slow-mo if possible. In the end it’s all about how much something moves in pixels per frame, so often times, to capture someone jumping on your bed looking at them from the front as opposed to the side will produce better results.

    I am not sure which is faster, to clean your bedroom or to do roto… Seriously, you can use tracking points (the Point Positions) or roto shapes to first help the background registration and make sure that is perfect. Once you add geometry guidance then crank up sensitivity to 100%. If the lighting is low, as is often the case with interior shots, try the Image Prep (edge-contrast) setup. Geometry is animatable (on-off) so you can limit your intervention for that to only the frames and within frames to the frame areas that are bad (read the doc for details). If you have frame edge artefacts, you can try Inverse /Smart Blend mode for Warping.

    Pierre
    http://www.revisionfx.com

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