Video Clarity


The Record pane allows you to record the current ClearView sequences, or to record from the Broadcast or DVI Input. The list of Input Sources (input devices) is dependent on the ClearView input modules installed. While recording from the video source, ClearView will do the following:

  • Capture based on the sensed video format. Note: during DVI input, the DVI output module is turned off to avoid conflicts with EDID codes.
  • Store the uncompressed video sequence on the file system or in memory.
  • Create the detailed and thumbnail information.

Record ClearView Output

The ClearView Output tab allows the user to record the video sequences currently playing in Viewport A and Viewport B. 3 reasons exist to do this

  • Record split screen video sequences as a single video sequence so that they can be exported later for offline analysis/viewing
  • Record a portion of the video sequence (or split screen video sequences) as a single video sequence so that they can be exported later for offline analysis/viewing. ClearView records the video area with the zoom box, when AOI is checked.
  • Record both video sequences as new video sequences after applying spatial alignment, normalization, and window commands. ClearView records the new video sequences to show the user the effect of the adjustments when the Use Metric Adjustments is checked.

Record ClearView Output

Record 1 SDI Input

The Broadcast tab – Record Mode Single Input records the video sequence as sensed on the SDI input. The SDI can be either SDI Input #1 or SDI Input #2 (as set by Config).

Record 1 SDI Input

Record 2 SDI Inputs

The Broadcast tab – Record Mode Dual Input records the video sequences as sensed on both SDI inputs. Each video can go to a different library and both must have different sequence names.

Record 2 SDI Input

Record SDI While Playing

The Broadcast tab – Record Mode Input/Output records the video sequences as sensed SDI Input #2. SDI Output #1 is the video being served. The video format must be the same (i.e. both 1080i).
Note: If you want to play to a video encoder while recording from a video decoder. Then set the sync source to SDI #2 (the source) under Config.

Record SDI While Playing

Record DVI Input

The Record DVI Input records a single input from the DVI input module. The DVI output is turned off during recording to ensure that frames are not dropped.

Record 1 DVI Input

Record Pane Description

Input ClearView supports the following Inputs if the Modules have been purchased

  • ClearView Output: records the video sequences currently playing in the preview window as a new Video Sequence. Note: This is useful if you want to export a Split AB image or re-record after spatial alignment/normalization.
  • Broadcast Input: records the video sequence from the Broadcast I/O Module (i.e. SDI, HD-SDI, 3G-SDI, HDMI, Component, S-Video, and Composite).
  • DVI Input: records the video sequence from the DVI Input Module (i.e. DVI, HDMI, VGA)
Config Configure is different depending on the Input Source

  • ClearView Output: No meaning; thus, it is disabled.
  • Broadcast Input: Select the Digital and Analog A/V inputs and formats
  • DVI Input: configure the VESA input device

Note: You should always check configure because ClearView requires that you set the audio and video parameters by hand.

Record Mode This only applies to the Broadcast Input Module

  • Input/Output – this allows you to simultaneously record and play up to 1080i
  • Single Input – this allows you to record 1 channel
  • Dual Input – this allows you to record up to 2 channels up to 1080i
Library This lets you set the library for recording so that you can change it from the library used for playing
To Disk Checking this button records the input to the file system
Unchecking records the input to Memory Note: Audio is not current written to memory.
AOI If you have zoomed and panned to a particular area. You can record the video sequence in 1 of 2 ways:

  • AOI checked: Record the video sequence with pixel replication turned off, but only record the pixels shown on the preview window. (i.e. with zoom 2x and a 1920×1080 video sequence, this will record a video sequence with the size 960×540.
  • AOI unchecked: Record the video sequence as it is displayed in the preview window. Possibly with pixels replicated.

Note: to play a reduced size video sequence, you can use no video output mode.

Use Metric Adjust Checking this box will start the process of re-recording the 2 video sequences associated with Viewport A and Viewport B. The video sequences are re-recorded after apply spatial alignment, normalization, and windowing.
Note 1: for spatial alignment, the alignment must be an even number to avoid color shifts in Y’CbCr space and/or flipped fields in interlaced modes. 
Note 2: for spatial alignment, both sequences are moved and centered while performing the adjustment.
Sequence This is the name that is displayed in the thumbnail.
Note: this can be renamed later.
Frames Select the number of frames to record in the Record Pane. The number of frames defaults to the maximum number of frames available in memory or on the disk.
Abort on Drop Checking this aborts the record on the first dropped frame
Unchecking this allows the system to keep recording albeit with the error frame.
Status This simply says previewing, recording, or nothing.
Drop This increments the number of frames that have been dropped.
Out enable If you are using the CV-SDI-IO-DL or LHI modules, then this button will be active. It allows the operator to capture and playout simultaneously.

  • Playout must be connected to SDI out #1
  • Input must be connected to SDI in #2
  • Genlock will free run unless you connect a Genlock device

Note 1: Dual Link will not work. 
Note 2: Input is connected to SDI In #2.

Preview Press this button to preview the record from Broadcast or DVI to make sure that something is connected to the input.
Note: In Broadcast Input or DVI Input modes, preview is not active on the preview window once you select the record button. A hardware preview is supplied with the Broadcast and DVI Input Modules.
Record Start the record process. It will automatically end when the frame count is reached
Stop Stop recording

To record the current ClearView sequence, jog to the desired frame. In the Clip Alignment pane, set the first frame. To record a number of frames, you can either set the last frame in the Clip Alignment pane or you can select a number of frames in the Record pane.

You would want to record the output of ClearView if you intended to:

  • Export the video sequences as they are playing side-by-side to an AVI file (or BMP, Raw, etc.)
  • Export the video sequence as a smaller version (just looking at the spokes of the wheel as opposed to the whole car).
  • Create 2 new video sequences after the spatial alignment and normalization has adjusted the 2 video sequences relative to each other.

Note 1: that if you simply want to hit play and then record, you do not need to set the Clip Alignment. If you want to record just from frame n to frame m, and give it a new name, etc., you need to use a combination of the clip alignment and the record function.

Note 2:  Please be in Stop mode before starting the record or you will record more than 1 first frame. (Of course, you can edit these out, using the Clip Alignment pane.) This is because in pause mode, ClearView is displaying the same frame over and over. If you hit record while ClearView is doing this, then it will record that same frame over and over. In Stop mode, ClearView is not displaying, but the last frame that was played stays on the screen. The confusing part is that when you hit play, it will not start at this frame. It starts at the frame number given by the “clip alignment first frame” (probably frame 0).

To record from Broadcast or DVI input, connect your source.

  • In Broadcast input mode, ClearView auto senses the video format. To make sure that it has selected the correct format, select the Config button.
  • In DVI input mode, a configuration option will pop up as shown below.

Configure Broadcast Input Module

Input Source Chose among HDMI, Analog, SDI if you have a CV-SDI-IO-LHI module
Analog Format Chose among various 525 (486i), 625 (576i), 720P, and 1080i analog input standards
Sync Source Chose among SDI#1, SDI#2, External or Free Run (no source)
Audio Source Chose among embedded HDMI, embedded SDI, Analog, and AES if you have a CV-SDI-IO-LHI module or embedded SDI and AES if you have a CV-SDI-IO-DL module
Smpte 372 Dual Link If you have a CV-SDI-IO-DL module and you are using both inputs in Dual Link mode, then check this box
HD Down Convert (QRez) Do not touch this

Configure DVI/VGA Input Module

If the image dimensions, frame rate, etc. are correct, then click on OK. If they are not, then select the Input tab, and select VESA detect. The following dialog will appear. Press start. If the parameters are correct, then press OK.

Note: If you run into problems, please call Tech Support. To find your local office, please refer to

Use Auto Detect to configure DVI/VGA Input Module

Click on Start to begin, then OK. Now check the image dimensions. If everything look good, click on Apply and then OK.

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