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mxc_v4l2_capture driver with gstreamer mfw_gst_v4lsrc fails at startup

Question asked by Norman C on Mar 5, 2014
Latest reply on Apr 27, 2014 by Norman C

I am using Linux 3.0.35 FSL sdk 4.0.0 on iMX6-solo. My pipeline is an audio and video capture and mux to a MKV container and then write to filesink.


When starting the pipeline, both gst-launch or my program, will fail (fails intermittently 50/50) with timeout on this ioctl call to mxc_v4l2_capture

-- ioctl (v4l_src->fd_v4l, VIDIOC_QUERYBUF, buf)

in function mfw_gst_v4lsrc_start_capturing ()

console also log a timeout error.


Once it started the pipeline works well, no issue.


I wonder what might be the problem with the mxc_v4l2_capture device driver?  Is this timing related?