Corrupted image about facetimehd HOT 8 CLOSED

Hi,

dnf install xawtv

Then use the streamer command line to try to grab a picture then a video. Check http://www.tldp.org/HOWTO/Webcam-HOWTO/framegrabbers.html

On my Fedora 23 I have to unload the facetimehd (modprobe -r facetimehd) then reload it (modprobe facetimehd) between EACH try. the camera initiates only ONCE, then I have to cycle the module.

I could get a picture, and I tried a 5 seconds video, but only got like 3 frames. Hey, considering we're early to the party, it is great!!!

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Also as per patjak's comment in #17 try mplayer and run player tv:// It works for me. Looks like Cheese is the culprit of the camera issue.

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I found out, that cheese (and gnome-contacts too) don't display a corrupt image if the driver is limited to the maximum hardware resolution:

#define FTHD_MAX_WIDTH 1280
#define FTHD_MAX_HEIGHT 720

But cheese is still unusable (as the picture grab feature in gnome-contacts too).

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Haha it looks some Linux apps have issues with very high resolution webcam.
Apple faced the same issue a few years ago. Lowering the resolution indeed
"solves" the issue with cheese. The v4l2 interface of the driver is still a
big shaky but it 's already great job.
Le 23 déc. 2015 9:33 PM, "Tilo Prütz" [email protected] a écrit :

I found out, that cheese (and gnome-contacts too) don't display a corrupt
image if the driver is limited to the maximum hardware resolution:

#define FTHD_MAX_WIDTH 1280
#define FTHD_MAX_HEIGHT 720

But cheese is still unusable (as the picture grab feature in
gnome-contacts too).

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Reply to this email directly or view it on GitHub
#16 (comment).

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@xgnata How do you force driver to load lower resolution ubuntu 15.10?

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I've lowered the max resolution in the driver to 1280x720. The ISP might be able to handle higher resolution but other components probably can't. Does this fix the issue?

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Yes it does solve the issue at least with cheese. Thanks.
According to the Apple website (http://www.apple.com/macbook-air/features.html) it is a 720p FaceTime HD camera". Therefore limiting the resolution to 1280x720 seems to be the right thing to do.

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Great, I'll close this for now. Reopen if needed.

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