Subtitles of the Movie

This movie will cover how to retime footage using the Timing tab of the File In parameters. I've opened a new Shake script and I've Image, filed in a sequence of images. Next, I go to the parameters tab and instead of Source, I choose Timing. Let's expand these so we can see them. Down at the bottom, we have the retiming parameters. None means that the clip plays at its original speed and is not retimed; it's the default. Speed lets you universally speed or slow a clip throughout its duration. Remap lets you change the speed of a clip in a variable way so part of it can be slow, and another part fast if wanted. A curve is used as your control, where the X axis is your frame number, and the Y axis is your remapped frame. Convert gives you advanced ways to convert media to other formats than their original. When you choose Speed or Remap, you get options for blending frames to minimize slow motion strobing. Let's select Speed first. The three options that I get here are Blend, Nearest, and Adaptive. Let's try each of these settings out, first with Speed. I see that the parameters window changed from when I had None selected to when I have Speed selected. The number in the Speed settings area is slowing footage when the value is under 1, and speeding it when the value is above 1. Slower, faster, slower, faster. Let's reset the speed to 1 and try the Remap option. The Remap option opens up a graph and you can add additional points to the graph by Shift clicking it. You can drag them up or down to change the value of the current frame to a different frame. Remember that the X axis is your current frame number and the Y axis is your remapped frame. In the Speed and Remap options, we get three frame blending options. Nearest uses the frame just below the calculated frame number, so if your retime led the computer to calculate the next frame as 4.6, then it would use frame 4. If the retime led the computer to calculate 5.1 as the next frame, it would use frame 5. This causes a decent amount of strobing. Blend averages frames with one another using cross dissolves. This gives you another three options. Retime Bytes - higher bit depth here will give you better calculated imagery than lower bit depth. Wait - higher values, like 2 blend together frames in a way that favors the center frame in a blending operation. And Range tells Shake how many frames you want blended together to make the final result. The value you input here adds this many frames to the currently blended frames. The third Retime mode blending option is Adaptive, and this uses advanced image analysis tools to create new in between frames. The Convert Retiming option uses only Adaptive. Now, when I choose Adaptive, my parameters below it change. With motion, you can set it to Fast or Best. Fast works in most situations. If you choose Best, you get even more options. Backward Flow analyzes frames forwards and backwards when creating in between frames. Accurate? Yes, but also very slow. Flow Smoothness - lots of stuff moving and changing shape in a frame like flags waving, people dancing, running animals, use low values. Still objects that don't change shape, like houses, parked trucks, use high values. Flow Precision - this increases the resolution that optical flow uses for its motion estimations, but zero works most times. Back to our Adaptive options. Deinterlacing - we have both fast and good options here. These are used to interpolate data from both fields of each frame when you're working with interlaced video footage. If you have no moving actors, choose Good. For standard def. video like Mini DV or Beta, you should use Fast because it looks exactly like Good. If you deinterlaced before inputting to Shake and it looks bad, try the interlacing on the badly deinterlaced stuff here and see if that makes a difference. Next we have, when we choose Convert, the Always Interpoloate option. You should turn this on whenever you're using the Convert option for your retiming. If only some of your images are processed, the unprocessed ones may stick out like a sore thumb. This way, when this is on all of them get some fluffing by Shake. Don't forget that the simple retiming options you can do it manually in the File In node right here when you input your image. You won't get all the fancy frame blending options, but it will retime quickly. View the movie on basic retiming using the File In node for more information on manual frame retiming. You can also learn more about retiming footage in the Shake user manual, chapter 3: Adding media, retiming, and remastering.