Search the web with Google

Android install

Android installation weblog


Enter your email address:


Jeroen´s weblog

Ubuntu install

Ubuntu installation weblog


Tuesday, June 9, 2009

Firewire troubles

here, you find a manual for connecting firewire to a ubuntu of mint machine

mind that the file /dev/raw1394 should be read write for you too.

sudo chmod 777 /dev/raw1394


If you experience Firewire problems, please follow these steps:
Which firewire stack is installed ?

GNU/Linux recent kernels may be compiled with an old or a new firewire stack. To understand which firewire stack is installed, query the list of loaded modules

lsmod | egrep 'firewire|1394'

This is the old firewire stack:

ohci1394 37040 0
ieee1394 306104 2 sbp2,ohci1394

This is the new firewire stack:

firewire_sbp2 15152 0
scsi_mod 163832 5 firewire_sbp2,sg,sr_mod,sd_mod,libata
firewire_ohci 23140 0
firewire_core 39492 2 firewire_sbp2,firewire_ohci
crc_itu_t 2288 1 firewire_core

Old firewire stack

Make sure to load modules at boot time:

sudo gedit /etc/modules

add these lines:

raw1394
video1394
dv1394

Fix udev permissions

sudo gedit /etc/udef/udef.conf

add these lines:

# ieee1394 devices
KERNEL=="dv1394*", NAME="dv1394/%n"
KERNEL=="video1394*", NAME="video1394/%n"

If you still cannot capture from firewire, there may be a bug in udev permission.

change these lines into

KERNEL=="dv1394*", MODE=”0666″, NAME="dv1394/%n"
KERNEL=="video1394*", MODE=”0666″, NAME="video1394/%n"

New firewire stack

Write a custom udev script and store it in /etc/udev/rules.d/z95_firewire.rules:

# /etc/udev/rules.d/z95_firewire.rules

# Set GROUP="video" for some IEEE 1394 device types, driven by the new firewire stack.
# We cannot use the GROUP directive because the significant device type attributes
# live in child devices. So change the group after the fact with chgrp.

# IIDC devices: industrial cameras and some webcams
KERNEL=="dv1394*|video1394*|raw1394*|fw[0-9]*", GROUP="video"

# libraw1394 older than v2.0.1 and some special-purpose applications also need
# access to the local node(s). Alas there is no simple way to tell local nodes apart
# from remote ones; here is a simple hack.

SUBSYSTEM=="firewire", ATTR{vendor_name}=="Linux Firewire", GROUP="video"
# Or if your application needs access to all nodes, simply use:

SUBSYSTEM=="firewire", GROUP="video"

Debug and test using dvgrab

Your username should be part of the video group:

sudo adduser username video

Reboot your system for rules to apply. After reboot, run dvgrab in interactive mode:

dvgrab -i

Type h for help.

You should be able to rewind and play your camcorder.

If this is the case, enter "q" for quit dvgrab.

Kdenlive should now be able to acquire video.

No comments:

Post a Comment