Bug 477183

Summary: dvgrab hangs when no DV payload is found
Product: Red Hat Enterprise Linux 5 Reporter: Olivier Fourdan <ofourdan>
Component: dvgrabAssignee: Jay Fenlason <fenlason>
Status: CLOSED ERRATA QA Contact: BaseOS QE <qe-baseos-auto>
Severity: high Docs Contact:
Priority: high    
Version: 5.3CC: cward, jarod, jfeeney, kem, rbiba, spurrier, tao
Target Milestone: rcKeywords: OtherQA
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-01-13 23:46:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 499522    
Attachments:
Description Flags
Patch from upstream cvs commit revision 1.6 on v4l2reader.cc none

Description Olivier Fourdan 2008-12-19 14:24:23 UTC 
Created attachment 327451 [details]
Patch from upstream cvs commit revision 1.6 on v4l2reader.cc

Description of problem:

dvgrab can capture  from a USB Video Class (UVC) device that supports DV via the command line option "-V" or "-v4l2".

As documented in the man page, that works only with devices that support DV (such as the ones listed on http://linux-uvc.berlios.de/).

Unfortunately, if no DV data is found in the stream, dvgrab will hang.

Version-Release number of selected component (if applicable):

dvgrab-3.0

How reproducible:

100% reproducible

Steps to Reproduce:
1. Plug a webcam supported by uvcvideo (one that does not do DV otherwise it should work)
2. Try to capture with "dvgrab -V"
  
Actual results:

dvgrab hangs and cannot be interrupted oither by a kill -9 from another terminal/console.

Expected results:

dvgrab display an error and exits cleanly.

Additional info:

This is bug#2337246 upstream:

    http://sourceforge.net/tracker/index.php?func=detail&aid=2337246&group_id=14103&atid=114103

Fixed by this patch 

    http://kino.cvs.sourceforge.net/viewvc/kino/dvgrab/v4l2reader.cc?r1=1.5&r2=1.6
Comment 1 RHEL Program Management 2009-03-26 17:26:10 UTC 
This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".
Comment 24 errata-xmlrpc 2011-01-13 23:46:48 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0120.html