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25 Jul 2018
Glad to announce of release of INDI Library v1.7.4 on 2018-07-25. A few drivers were added in this release as we continue to improve & stabilize existing drivers.
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TOPIC: indi_v4l2_ccd error

indi_v4l2_ccd error 2 months 3 weeks ago #27003

  • Boris
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Hi all!

I have been using for some time indi_v4l2_ccd lib on a raspberry with an SQ11 cam for guiding with no problem, but the indi lib was old, and outdated. Yesterday I updated it (compiled from the source) to the latest version, and since than I cannot do a still photo. Live video still works, but when I click on Preview, the driver quits with an error. The error is the following:

2018-07-01T06:06:00: [WARNING] Manual/auto exposure control is not possible on the device!
2018-07-01T06:06:00: [WARNING] Absolute exposure duration control is not possible on the device!
2018-07-01T06:06:00: [INFO] Found intial Input "Camera 1", Format "Motion-JPEG", Size 1280x720, Frame interval 1/30s
2018-07-01T06:06:00: [INFO] V4L2 CCD Device is online. Initializing properties.

2018-07-01T06:06:39: [WARNING] No exposure or streaming in progress
2018-07-01T06:06:39: [WARNING] Failed 1.000-second manual exposure, no adequate control is registered.
2018-07-01T06:06:39: [ERROR] Failed exposing, the absolute exposure duration control is undefined
2018-07-01T06:06:39: [WARNING] Failed 1.000-second manual exposure, no adequate control is registered.
2018-07-01T06:06:39: [ERROR] Failed exposing, the absolute exposure duration control is undefined
2018-07-01T06:06:39: [WARNING] Failed 1.000-second manual exposure, no adequate control is registered.

I also compiled the latest indi drivert on my main pc which is Arch linux based, but the phenomenon is the exact same.

And since this exact same webcan (Sq11) was working with a previous version, I think my setup should be ok, for even the latest version.

Any advice / help on this guys?

log file:

File Attachment:

File Name: log_2018-07-01.txt
File Size: 75 KB



UPDATE:
2018. July 2nd: Just tried another web camera, it produces the same error. I will report it as a bug.
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Last Edit: by Boris.

indi_v4l2_ccd error 2 months 2 weeks ago #27050

Sorry, I don't know too much about the V4L2 driver, or what might be wrong with it currently, but you may be in luck though because over the past week I have been developing a new driver that I am calling the INDI Webcam driver that supports V4L2, Firewire, and DC1394 cameras on linux as well as AV Foundation cameras on Macs. I primarily developed it because the V4L2 driver does not work on Mac OS X computers. But since it is based on FFMpeg, it not only supports V4L2, but also numerous other devices/cameras. It supports single exposures as well as streaming. I also added a feature that uses the exposure time in single exposure mode to either integrate or average as many individual frames as it can fit in your selected exposure time and then return the result. We need to do some final testing on it and then hopefully it will be published to the repository soon.

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