[mythtv-users] StartEncoding failed

David Gabler dg-mythtv.org at gablerfamily.org
Tue Nov 10 07:08:09 UTC 2009


I can not seem to find the magic combination for video4linux and ivtv. 
the ivtv module fails to insert due to conflicts.
running centos 5.3,  2.6.18-164.6.1.el5PAE

Works fine with out video4linux/video4linux-kmdl

Thoughts?

Paul Bender wrote:
> David Gabler wrote:
>> Updated kernel and ivtv to newest  kernel-PAE-2.6.18-164.6.1.el5
>>
>> Still having the problem and do not understand the error being thrown.
>>
>> David
>>
>> David Gabler wrote:
>>> All,
>>>
>>> Just started noticing this error on my backend but can not seem to 
>>> figure
>>> it out.
>>> Upgraded to 0.22 and still having the same problem.  Hardware 
>>> consists of
>>> a HP500 (video1-2) and HP150 (video0).
>>>
>>> Have removed and re-added tuners to no avail.
>>> target directory (/data/videos/tv) exists and has enough space.
>>>
>>> What I can see it all boils down to is :
>>> 2009-11-08 23:42:19.403 MPEGRec(/dev/video0): StartEncoding
>>> 2009-11-08 23:42:19.403 MPEGRec(/dev/video0) Error: StartEncoding failed
>>>                         eno: Invalid argument (22)
>>> 2009-11-08 23:42:19.404 MPEGRec(/dev/video0) Error: Failed to start 
>>> recording
> 
> I believe I may have found the problem and the fix. However, I cannot 
> test it until I have time switch my system back to MythTV 0.22. Right 
> now it is running MythTV 0.21 so that it can record.
> 
> Looking at the MythTV source, the problem appears to be with the statement
> ioctl(fd, VIDIOC_ENCODER_CMD, &command)
> However, VIDIOC_ENCODER_CMD is not present in the version of V4L in the 
> 2.6.18 kernel. I have been using the ATrpms ivtv driver package, so I am 
> using the 2.6.18 V4L. However, ATrpms has a video4linux driver package, 
> which has a V4L with VIDIOC_ENCODER_CMD. Therefore, I suspect switching 
> from ATrpms ivtv driver package to the ATrpms video4linux driver package 
> would fix the problem.
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