Image Pull is the ability to generate a small thumbnail image of the video being displayed on HDMI. In addition to being a powerful troubleshooting and diagnostic tool, Image Pull provides a more powerful user experience by giving the control system the capability of displaying a preview image inside the user interface.
Image Pull was introduced into the 2G/2G+ platform with a firmware update in version A5.21D on February 28, 2014 and is included in all releases after that date. This firmware can be applied to any Just Add Power 2G device built as early as September 2010.
To view Image Pull:
http://172.16.128.1/pull.bmp
http://172.27.1.1/pull.jpg
Settings are applied on boot-up of the device, and persist through a reboot. Settings can be applied through the Console API of the webUI or a telnet connection.
Setting | Description | Variables | Example |
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astparam s pull_on_boot {$SIZE}_{$PRI}_{$FREQ} |
Set default Image Pull parameters | {$SIZE} = Integer width of video (320, 640, 1280, 1920, etc)Larger image sizes may cause video stuttering |
astparam s pull_on_boot 320_1_3 (default on 3G) |
{$PRI} = 1 or 0 Recommend 1 , as 0 will cause video stutter |
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{$FREQ} = Integer, number of seconds between image capturesRecommend 1 or higher |
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astparam s pull_on_boot |
Disable Image Pull | None | astparam s pull_on_boot (default on 2G) |
astparam save |
Send at the end of all other settings to Save to permanent memory | None | astparam save |
Commands are executed immediately, but do not persist through a reboot. Commands can be executed through the Console API of the webUI or a telnet connection.
Command | Description | Variables | Example |
---|---|---|---|
start_image_pull {$SIZE} {$PRI} {$FREQ} |
Start an Image Pull process with the input variables Stops all previous Image Pull processes |
{$SIZE} = Integer width of video (320, 640, 1280, 1920, etc)Larger image sizes may cause video stuttering |
start_image_pull 320 1 3 |
{$PRI} = 1 or 0 Recommend 1 , as 0 will cause video stutter |
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{$FREQ} = Integer, number of seconds between image capturesRecommend 1 or higher |
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stop_image_pull |
Stops all Image Pull processes | None | stop_image_pull |
bmp2png -o /www/tmp.png /www/pull.bmp;mv /www/tmp.png /www/pull.png |
Converts the pull.bmp image to a PNG and names the file pull.png |
The name of the png file can be changed, but it is not recommended |
Notes on using the Commands:
start_image_pull
is executed. If the telnet session is closed, the Image Pull process will stop and the image will not refresh.start_image_pull
should only be sent via TELNET. Sending through the Console API will cause device instability.