Webcam capture is upside-down

[dierre]

With ubuntu 11.04 I noticed that, when starting the video chat feature in gmail, the video capture is upside-down.

I tried the workaround of running
    LD_PRELOAD=/usr/lib32/libv4l/v4l1compat.so /opt/google/talkplugin/GoogleTalkPLugin
before running the browser, but this has no effect.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: libv4l-0 0.8.3-1
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed Dec 28 13:21:18 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=it_IT:en
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: v4l-utils
UpgradeStatus: No upgrade log present (probably fresh install)

[dierre (fdr)]

Attaching output of dmidecode.

[dierre (fdr)]

Attaching output of lsusb, so that the exact model of webcam can be retrieved.

[dierre (fdr)]

The workaround I tried is detailed here (with the difference I'm using firefox instead of chrome):
http://askubuntu.com/questions/52357/uvc-webcam-upside-down-with-google-gtalk-plugin

but didn't work. I tried both paths /usr/lib/libv4l/v4l1compat.so and /usr/lib32/libv4l/v4l1compat.so

[Gregor Jasny (gjasny)]

Please try the following:
apt-add-repository ppa:libv4l/stable
apt-get update
apt-get upgrade

If you type "dpkg -l libv4l-0" you should see a 0.8.6~something version printed. If you run cheese, your webcam image should be in the right orientation now.

Now install the 32bit version of libv4l:

apt-get install libv4l-0:i386

Now you should be able to preload the installed library:
LD_PRELOAD=/usr/lib/i386-linux-gnu/v4l1compat.so /opt/google/talkplugin/

[Gregor Jasny (gjasny)]

I just realized that you're on Natty. The above PPA and instructions work only on Oneiric and Precise.

[Gregor Jasny (gjasny)]

I've added natty to the stable PPA:
https://launchpad.net/~libv4l/+archive/stable

Please install lib32v4l-0 and use /usr/lib32/libv4l/v4l1compat.so for the preload.

If that does not help, please reply here.

[Gregor Jasny (gjasny)]

In case you're stll on Natty, could you please test the libv4l stable PPA?

[dierre (fdr)]

Sorry, I updated from Natty.

--
Sent from my phone, sorry if this message is not wordy!

Francesco
Il giorno 11/giu/2012 09:21, "Gregor Jasny" <email address hidden> ha
scritto:

> In case you're stll on Natty, could you please test the libv4l stable
> PPA?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/909352
>
> Title:
> Webcam capture is upside-down
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/909352/+subscriptions
>

[Gregor Jasny (gjasny)]

Is Natty still supported? If not I'd suggest closing this bug as wontfix. A work around is available via the stable PPA. Later libv4l versions have a much better support for ASUS Notebooks with upside down cameras.