Frequently Asked Questions

The HD inputs are via DVI and SDI. DVI is a very flexible HD input and when combined with inexpensive (meaning a few dollars) cable adapters it can accept HDMI, DVI-I, DVI-A, analog RGB, analog component / YPrPb / YUV, and VGA.

SDI is an option on the LT-101 and accepts both SD and HD signals.

No. Audio/video materials that are copy protected with HDCP can't be acquired or compressed by general purpose hardware such us ours. As our products are not closed systems there is no way for us to guaranty that they won't be used for illegal duplication or transmission of copy protected materials. Consequently, we are not permitted to include HDCP decoding.

Unfortunately, there are some equipment manufacturers who have taken to HDCP encoding their outputs even for non copy protected materials (e.g. home movies, etc.) We have seen this problem with the HDMI outputs of some BlueRay players which treat non-copy and copy protected material identically. If this is the case, you can try an adapter such as the HDfury (use your favorite search engine to find one).

If the camcorder has an HDMI, RGB, or component output, it should work. Recently, several low cost HD camcorders with HDMI outputs have been introduced giving good quality 1080 video.

A frame is a picture (or an image) in compression terminology. I frames are Intra coded images where the same image content is used as reference for prediction. Inter frames are temporal referenced pictures.

"Intra SAD threshold" is a parameter that is used to steer the amount of "Intra" coded Macroblocks in a frame. 17000 should be a good average value. This value has been determined empirically. If set to 0, all Macroblocks will be coded as Intra

"Use I-frame EPL" stands for use Intra frame entry point layer syntax element. EPL is an optional VC-1 header syntax element that can be placed just before an Intra frame. This syntax element allows a player to enter the stream at random positions.

A GOP is made up of one I-frame followed by zero or more P-frames. E.g. a GOP of 5 is composed of following I and P frames IPPPPIPPPPPI...

When used, this mode bypasses the bitrate control mechanism and configures a constant quantization parameter. The result is a constant quality video no matter what target bitrate has been set. If set to 0, bitrate control will try to achieve the target bitrate given by the user.