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exhibit research | NCM | R10 Bronc | Support Page
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How it Works
The computer displays a live video feed from the camera, which is connected to one of the computer's two Firewire (IEEE 1394) ports. When it receives a button press, it begins counting down from 3. It also sends a confirmation signal to the show controller (ASCII "a"), which also triggers the show controller to play a sound. (Audio resides on the show controller to free up the computer for doing video processing.) At this time, the computer also begins blocking any further button presses. When the Bronc software first starts up, it begins recording a ride automatically. (This is so that there is always a video clip available for the attract loop, as the plasma monitor is highly susceptible to image burn-in.
At zero, the computer begins recording a video clip for a specified time (currently set at 10 seconds). At the end of recording, it sends an ASCII "b" to the show controller, which stops whatever sound is playing and plays another one. The software then manipulates the video to add a background clip in place of the green, edits the captured clip into a sequence with clips before and after, and applies an "old film" effect to the edited sequence. The entire sequence is then saved as a Quicktime movie in the captured_movies folder. While it is manipulating the video, the computer will be locked up and cannot perform any other tasks. During this time, the screen that says "Wait about 30 seconds" is displayed. To quit out of the program, wait until processing is finished and the completed clip begins to play back.
When it begins playing the finished clip, the computer sends ASCII "s" through "v" (different for each of the four different rides) to the show controller, to trigger the appropriate soundtrack to play.
After playback, the computer then prints a receipt which contains login and password, for the visitor to view and download the clip on the web. Login and password strings are generated randomly from a list of all letters and numerals. The logins and passwords are also written to an external text file called users062702.txt (one named for each day) which lives in the movies_final folder. A thumbnail-sized image from the captured video is also added to the printed receipt.
After the receipt has been printed, and the print screen has been displayed for 10 seconds, the program will return to a live video feed and wait for a button press. After 5 minutes (adjustable in the settings file) the computer will run an attract loop. This is a separate program which just displays the latest 10 clips in a certain folder. This program has its own adjustable settings. When a button is pressed, the computer closes the attract loop and begins the countdown to recording.
In the evening, the computer automatically adds soundtracks to all of the captured movies from that day (since audio has been offloaded to the show controller), then uploads the files to an FTP site. After uploading is finished, the computer shuts down.
Greenscreen Masking
If the greenscreen masking looks wrong, this probably means that either the lighting or camera position has changed. Adjust the camera angle on the tripod, and zoom with a wheel on the back of the camera (the size of a quarter, with two ridges to grip). To calibrate the software to new lighting conditions, do the following:
Open the crate on the floor by lifting straight up (assuming it's not locked). Press the ESC key to exit the bronc program. Look in the bronc014 folder on the desktop, in the movies_source folder, and double-click the file called Captured Movie). This opens the last captured movie (this works better if there is someone on the bronc so if there is not, run the program and take a ride yourself. The quit the program after the live video feed comes back on, and open the last captured movie using the path specified above.)
When the movie is open, Go to the File menu and choose Export. Make sure Quicktime Movie is selected from the drop-down menu. Choose Options, then Filter. Select the Filter called Blue or Green Screen. Choose Green from the drop-down menu, and select the box that says Mask Only. Now you can use the Threshold slider to adjust the masking. Set it so that all the background is masked out but none of the person is. Set Smoothing to High, Background to None. Then uncheck the Mask Only box. Select Save from the lower left, and save the file under the default name (Blue or Green Screen.qfx), in bronc014/Settings. Replace the file that is already there.
Troubleshooting
If the video feed is all white, or not clear: First, try unplugging and re-plugging the Firewire cable going into the computer, then reboot (press ESC to exit the Bronc program, and select Restart from the Special menu).
Error Messages: The computer has a Control Panel called Okey Dokey which says OK to any dialog box that appears on the screen. If an error keeps flashing on the screen, that means that each time Okey Dokey is dismissing it but the error persists. In this case, try pressing the ESC key repeatedly, or holding the Apple (Command) key and pressing the period key repeatedly.
If the message is a Script Error: please make a note of it and email to kevin@woed.com. (Pressing OK to one of these errors will attempt to keep running the program.) But if the error prevents continued running it will keep appearing, in which case the error must be cancelled (using the ESC or Cmd-. keys) and the program stopped. Then reboot (Special menu/Restart).
If the message is a communication error between the computer and printer: first try rebooting. If that does not work, check the printer power and data cables. On the computer's desktop, go to the Chooser from the Apple (far left) menu, select POSjet, and verify that a USB connection appears in the right-side window.
If the program crashes to the desktop: An error message will be displayed but will probably be immediately dismissed by Okey Dokey, so the computer will be sitting on the desktop. Reboot. If the problem persists, contact kevin@woed.com. You can try reloading the Bronc software.
Networking Issues
If files are not being uploaded, check the "zerror" log file "Network Connection Found!" or "Network Connection Not Found!". The insertSFXandFTP.exe can be triggered manually by double-clicking on it. If there are movies in the movies_created folder, it will add soundtracks, then attempt to upload whatever is in movies_final.
If there is network connectivity and the insertSFXandFTP.exe appears to be running and quitting properly, check the iDo Script Scheduler control panel (under the Apple menu). To test, you can set the time for 10 minutes later or so, then run the Bronc program (to create a new file), and wait to see if it executes properly. If so, don't forget to reset the time in the script scheduler.
Note that there is also a scheduled reboot at 9 AM. This is just in case the file transfer has stopped or frozen, and to start the Bronc software cleanly. A maximum of about 300 movies could be generated in a normal day. In eight hours, under normal conditions, the computer can upload about 1100 files.
An alternate method of file transfer has been provided. A file called insertSFX.exe can be triggered from the after hours script (open afterhours.script , change the script, then save as a Run Only Classic Applet, Startup Screen disabled, saved as afterhours.exe). This merely adds the soundtracks back to movies, then triggers a separate app called FTP.exe. FTP.exe opens a file transfer program called Fetch, uploads the entire movies_final folder, then deletes the folder and shuts down. The FTP settings are specified in the ftp.script (which must be recompiled if changed).
The danger in this method is that it does not know which files have or have not been uploaded, and it will delete the movies_final folder regardless. So it should be used only if there is ample time to upload the number of files in the movies_final folder.
Files could also be uploaded manually by opening Fetch (in the Applications (OS 9) folder on the hard drive, or from the Recent Applications.) There is a bookmark to the FTP site, and files can be dragged into the window.
One note of caution when manually moving files around: The Bronc software creates a users file for each day, and if that file is not in the movies_final folder, it will create one. If there are two files for one day, and one is uploaded, if the other file is uploaded, it will overwrite the previous, thus creating the possibility of erasing login/password information.
Camera
If a tape is inserted, the camera will turn off after five minutes.
Computer
This machine is a 933MHz G4 with 512MB RAM and a fast SCSI-2 hard drive.
More information on the G4 is available here.
Stealth Serial Port driver is here.
Monitor
More information on the CMP307XU is available here.
Audio
Cabling and Connections
Data: An Ethernet cable comes in from the floor to the computer. The printer is directly connected by USB with a cable run from the crate to the printer. A keyboard is plugged into the other USB port, with a mouse plugged into one of the two USB ports on the keyboard. The camera is directly connected with a Firewire cable which runs from the side of the camera (bottom as it is mounted), down through the floor, and up into the crate. The show controller is directly connected to the serial port on the computer, with all cables inside the crate.
Printer
In the Bronc program, printing layout is controlled by a file called "barcodeprinting.cst," in the Bronc014 folder on the desktop. (Download it here.) To re-install the Dymo Labelwriter, use this barcodeprinting.cst file.
After heavy use, the Dymo LabelWriter 330 Turbo was deemed unsuitable for this application, due to difficulties with paper spooling and tearing, heat buildup, and communication problems with the computer.
Bronc Software
Manual Control: A button press can be simulated with the number 1 key on the keyboard. The "l" key (lower-case L) will manually trigger the Attract Loop, and the "q" will exit the Attract Loop (it runs in a window on top of Bronc).
Other Adjustable Parameters: There is an external text file which holds Bronc settings, in Prefs/broncprefs.txt. This information can be adjusted from this file if necessary, though the Calibration Screen is easier. In the broncprefs.txt file, look for the following parameters: secondsTillAttractLoop, snapDisplayTime. capturetime can be adjusted, but the audio files on the show controller are also set at 10 seconds, so they should also be changed or they will be cut off. 8-second and 6-second version of all of the source files have been provided, in case a change of this sort is desired.
Also note the parameter called moviecount, as this shows the current number used in naming clips. This number is incremented every time a clip is recorded. It can be manually set, but if it is set to a low number, it may write over existing files on the FTP server. When it reaches its upper limit, this number will reset back to zero. Since the limit is quite high, it will likely take years to roll over.
You can adjust the video codec (the video format or compression algorithm) by launching the Bronc software while holding down the Shift key. It will record as usual, but during processing, it will display a dialog box allowing you to choose the type of compression, framerate, etc. It will then save those settings to a file called melded_OUT_settings, in the settings folder. So if you want to make changes or experiment with this, it is recommended that you first remove this file, so that you can replace it if necessary. The next time the Bronc software starts up (without the Shift key held down), it will use the settings specified in settings/melded_OUT_settings.
Bronc Naming Convention: Each clip is named according the incremental counter described above, and padded with zeroes to create an 8-digit filename. Each file also includes an extension, separated by a dash, which indicates its ride number (1 through 4). In general, each file has a unique name which makes them relatively easy to locate (either by computers or humans). The users file lists each filename along with login and password generated for each.
Video Issues: The video feed displays at VGA (640x480) resolution. If ever the video display shows all white, or an abstract pattern, check the camera connections, and try unplugging and re-plugging in the Firewire cable going into the computer.
Files & Folders: The Bronc software utilizes externally linked files and folders, and if any file or folder names are changed, it will ask for help in locating them. The files bronc, displaysnapsbronc, insertSFX, and insertSFXandFTP are Director movies which can be opened and manipulated in Director; the StartHere file is merely a "stub projector" which opens bronc, and it contains no other code. The files in the CASTS folder are Director cast files which also can be opened in Director.
There are a few Applescripts provided. afterhours simply quits out of the Bronc (StartHere) program and runs another Director file called insertSFXandFTP.exe. This inserts soundtracks into all of the movies in the movies_created folder (because sound is offloaded to the show controller to speed processing during exhibit hours), then saves the movies with sound in the folder movies_final. Then it uploads everything in movies_final (movies, user files and a log file that it generates) to the FTP site specified in Prefs/insertSFXandFTP.exeprefs.ini. After each movie is uploaded, it is deleted, and when all uploading is finished, it runs the Applescript app called shutdowner.exe, which shuts down the computer for the night. (It is set to startup at 8 AM in the Energy Saver control panel.) There is also a script to reboot the machine (currently set for 9 AM), and an FTP script which is not currently being used (see Networking above).
The movies_source folder holds all of the source files the program uses to piece together each completed movie. This includes start and end clips, background clips, and soundtracks for each of the four distinct rides.
The Prefs folder holds bronc preferences as described above, and also settings for the displaysnaps (attract loop) program and the after hours FTP program.
Utilities and Settings: Also installed on the computer are a couple of Control Panels: Okey Dokey is a freeware utility which simulates pressing "OK" to any alert box or error message that appears. The time is adjustable, and it has been set to its fastest setting. No "special apps" are specified, so it will toggle between being on and off.
There is a Control Panel called iDo Script Scheduler, another utility which triggers Applescripts at specified times. In this case, it is being used to reboot the computer at 9:55 AM every day.
The monitor resolution should be set to 640x480@75Hz, Millions of Colors (Monitor Control Panel). Sound should be turned off; the keyboard provides keys for adjusting volume or muting. Energy Saver settings should be set so that the computer never goes to sleep or spins down the hard drive. This Control Panel is set to start up and shut down the computer at specified times.
Attract Loop Software
This is a separate program which acts as a slide show for recently snapped posters. This program is important because the plasma monitors can easily have an image burned in permanently if that image is left on the screen too long.
The program looks in a specified directory for the 10 (or specified number) most recent clips, then plays them. A button press closes the program and goes back to Bronc. There must be at least one movie in the movies_created folder, so the bronc software is set to record one when it first starts up. (The day's clips are deleted after they are uploaded to the FTP site.)
Manual Control: Clicking the mouse will bring up the settings screen. Unfortunately, the Bronc software wants to hide the cursor, so you may have to move the mouse around a bit to see it. You can also quit (Apple-q), and adjust the settings from the external text file Prefs/displaysnapsbroncprefs.txt. Look for the following parameters in the text file: folderPath (where to get the clips: in the movies_created folder); totalNumberOfImagesToCycle (number of clips to play).
Downloads