the vtfs stores video in a 16-235 color range. its native format is yuv.

    the maximum number of dps files per folder is 2048.

    the video capture rate is a target, not an absolute. m-jpeg calculates compression on the basis of quality, not data rate. so, if you choose to capture a series of black frames at a very high data rate, there just isn't the information to expand those black frames. this is, of course, an extreme example. but a series of images that do not have a lot of variation within or between the individual frames may not be captured at the 14 mb/s that you set the compression to.

    compression rate - choose the video compression to use during capture. just because you set your compression to the maximum compressed rate of 14 mb/s does not mean that is the rate it will be captured at.

    the m-jpeg compression algorithm that dpsvelocity uses is not based on compression ratios. it is based on quality settings. so it is possible that something will compress well at a high quality setting, meaning that it will take up less space than expected on the hard drive.

    this is dependent on the video data that is being encoded.

    uncompressed - check this box to capture uncompressed video. when you choose uncompressed on the quick capture settings screen, the data rate specified will be overridden. uncompressed video is captured at a 4-2-2 data rate, because that's the rate it was recorded onto the video tape at.

    padding:- also called fixed field size, this forces each frame to use exactly the same amount of drive space, depending on your capture rate (the number of mb/s). when this option is not checked the capture program can use different amounts of drive space for each frame, depending on how much compression is needed for each frame, to reduce the amount of drive space used for the entire clip. however, if you plan to modify individual frames in your clip (for an animation for example) the size of the new frame may be greater than it was for the old frame (because of the compression) and you may run into problems. if you have checked the padding option all the frames will have the same data size reserved for them, so the new frames will always have enough space.

    proc amp all unity - resets all proc amp sliders to their default positions.

    v-scope - open a waveform analyzer and vectorscope. (see chapter 13 for details.) the dpsreality hardware passes the video input signal through its processing circuitry to the video output monitor. you can see the effect that each control has on the video signal interactively in real time.

    when in the batch/hybrid/recapture settings screen, you also have an option to reset the proc amps to standard ccir settings.

    save - once you are satisfied with your settings, you may want to save them for future use. click the save button and you will be able to give your batch capture settings file a name.

    load - if you have already saved a settings file that you want to reuse, you can click the load button to re-set all the settings.