webcam flipped aka v4l1compat.so troubles

Question

So since I installed 14.04 an old issue re-arises: In cheese my webcam works fine, in skype its upside down. Before you could fix that by:

LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype

but now you can't, as I understand, because you end up here:

/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so

which results in:

ERROR: ld.so: object '/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.

Now it was suggested to use the 32bit version in

/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so

but there is only the one version in x86_64, I searched my whole system, nothing... How is this fixable? Any help highly appreciated!

Solution 1

I found a fix for this problem:

LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so skype

Did the trick for my Ubuntu 14.04 64bit. If you haven't got the 32bit library install it by:

sudo apt-get install libv4l-dev

I hope that works for you too.

Regards pecuna

Solution 2

You have to install 32 bit (i386) version of libv4l-0:

sudo apt-get install -y libv4l-0:i386

then start Skype with this command:

LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so

or modify the Exec command in /usr/share/applications/skype.desktop

Comments

[ski]

I worked it out! Combining the answer here: askubuntu.com/questions/315643/ld-preload-fails-with-skype?l‌​q=1 and the answer here: askubuntu.com/questions/463337/asus-k50ij-webcam-problem it worked for me! Thanks!

[ski]

Thank you very much for your reply, I installed libv4l-dev but there is still no folder libv4l in /usr/lib/i386-linux-gnu/ how did you make it appear?

[pecuna]

I don't know. I just install libv4l-dev and nothing else. I should have done something before that to have it :(

[muru]

This is the same as askubuntu.com/a/463443/158442.

[MadMike]

@muru The other answer says "libv4l-dev" whereas this one says "libv4l-0:i386". Could this be the missing piece to solve the 32-bit problem?

[muru]

@MadMike ah, yes. You're right: packages.ubuntu.com/… The poster of the accepted answer probably already had it installed.