View-Master Interactive Vision (partially lost VHS-based games; 1988)
The View-Master Interactive Vision was a children's VHS-based game console released in 1988. The console was produced by View-Master Ideal Group, Inc. The company is most well-known for their View-Master film-slide viewer toys. In a message that was printed on all of the View-Master Interactive Vision boxes, View-Master Ideal Group Inc. president Arnold Thaler explained the philosophy behind the product. He viewed the system as a "two-way learning and entertainment television system", as the characters on screen would often address the user directly, and their interactions would change depending on the user's choices. He was particularly fond of the console's ability to remember the choices that had been made, allowing for a recap or final score to be provided to the user.
In the end, only seven tapes were released for the system. Four tapes were taken from Sesame Street. They used a mixture of newly recorded footage, which often explained how to use the console, as well as Sesame Street stock footage that was used as a backdrop for games. Two tapes were taken from Jim Henson's Muppets, and they used entirely original scenarios built around giving the player the View-Master Interactive Vision controller to control the outcome of the story. The last tape, Disney Cartoon Arcade used footage from classic Disney cartoons as a sort of framing device for simple arcade games.
The console used special VHS tapes to supply full-motion video for the games. These were chosen so that the console could be attached to the family VCR, which was a common household item at the time. The video and audio from the VHS tapes was passed through the console en route to the television. The system used gen-lock technology to generate moving graphics on top of the full-motion video, merge the video streams together, and output the video to the television. In addition to the full-motion video, the tapes contain hidden data in the overscan of the video frame which the console is able to interpret.
If a tape is played directly from a VCR to a television without the console, the user will see a barcode moving up the right-hand side of the screen. This contains the information that the console needs to generate the moving graphics and switch to an alternate audio track. The left side of the video frame contains a moving audio waveform. Essentially, the designers wanted to have a separate audio track to allow the characters to respond differently depending on the user's actions. However, many VCRs at the time were only capable of mono audio output, so it was not as simple as switching the console to only output the left or right audio channel from the tape. Instead, they hid the second audio track inside the video stream, and the console is able to pull the data out and swap between outputting the regular audio and the hidden audio based on the programming data.
VHS is a linear format, and the console had no ability to control the tape transport. This alternate audio track allowed them to have the user's actions seem to control the outcome. Often, the characters' lip-syncing would be carefully timed so that it looked natural with either audio track. Other times, a split-screen would be used in which the FMV showed both outcomes. However, one of the outcomes would be covered up by graphics depending on which track was being played. In the ending of Disney's Cartoon Arcade, failing the final game resulted in a full-screen FMV sequence being completely covered up by graphics and muted, as it was only shown as a reward for success.
Capture and Preservation
Given the complexity of the tapes, there is a large amount of data that should be captured in order to fully preserve a tape. First, the tape should be captured directly from a VCR to preserve the original hidden audio waveform and programming barcode. While the console does not currently have an emulator, the raw footage will be useful for future emulator development, as the emulator will need to be able to interpret the hidden data. For this same reason, the hidden data should be captured at the highest quality possible. However, the output of the console with the rendered graphics should also be captured in good quality so that the graphics themselves are available for reference. This will require multiple capture sources for some scenes, as user choice will sometime result in entirely different graphics being rendered. Finally, all of the audio from both the regular and alternate track should be captured, which will also require multiple captures.
The console's instruction manual explains how to hook up the console to the VCR and television. The VCR's RF output, composite video output, and mono audio output must be connected to the console. It is not entirely understood why all three connections are required, as an RF signal for televisions contains both the audio and video in a single cable. The console itself only has an RF output, while most digitizers require composite video and separate audio. Therefore, the signal should be demodulated, either through a second VCR or another piece of equipment capable of performing this task. Once we have this signal, we will need to add extra steps in order to get the signal into our digitizer, rather than a television.
In order to capture either raw video footage or video with rendered graphics, the VCR must be connected to a capture device that can handle the video signal. The data in the over-scan is often rejected by the capture device, resulting in a "No Signgal" error. It has been shown that sending the signal through a composite-to-HDMI video upscaler and then into an HDMI capture device can work to capture the signal. This works both for direct capture from the VCR and from the console. However, the top of the video frame folds down on top of itself, the frame is generally unstable, and the video drops so many frames that the audio and video end up out of sync. The only saving grace of this method is that the alternate audio track is maintained properly, with only a light hum when the alternate track switches in. This light hum may have occurred on televisions of the time as well, due to the unusual audio delivery. An alternate method has been discovered using a higher-end VCR that had extra circuitry for video stabilization. This was able to stop the frame from folding down on itself, and stabilized the image. At this point, the composite video, whether taken directly from the VCR or routed through the console, worked correctly with a composite-to-USB digitizer. However, this video stabilization broke the alternate audio track, which became heavily distorted by a loud buzz. Therefore, a complete capture of the video with the rendered graphics will require two separate captures, one done with each method, or a good video capture from the high-end VCR and a separate audio-only capture of the good audio.
|Title||Status of Raw Video and Main Audio||Status of Rendered Graphics and Alt Audio||Notes on Missing Material|
|Sesame Street: Let's Learn to Play Together||Found||Found||Everything is believed to be found here, though it is possible that some obscure piece of alternate audio or graphics could be missing.|
|Sesame Street: Magic on Sesame Street||Found||Partially Lost||The alternate audio and graphics from the "voice changing" sequence have not surfaced. Also, the alternate audio and graphics from the storytelling segment is missing.|
|Sesame Street: Let's Play School||Found||Found||Everything is believed to be found here, though it is possible that some obscure piece of alternate audio or graphics could be missing.|
|Sesame Street: Oscar's Letter Party||Found||Partially Lost||The alternate graphics and audio for different words have not all been accounted for.|
|Disney's Cartoon Arcade||Found||Found||Everything is believed to be found here, though it is possible that some obscure piece of alternate audio or graphics could be missing.|
|Muppet Madness||Found||Partially Lost||The alternate graphics and audio for Beaker successfully reaching the moon, as well as Kermit and friends defeating the evil Doctor Achoo have not surfaces|
|Muppet Studios Presents: You're the Director||Found||Partially Lost||Various alternate choices that result in different graphics and audio are missing.|
- The message from View-Master Ideal Group president Arnold Thaler, taken from the back of the console box. Retrieved 17 May '20
- Online unofficial FAQ explaining how the VMIV console works. Retrieved 17 May '20
- The instruction manual which explains the hook-up process for the console. Retrieved 17 May '20