Frame synchronization problem during video cameras switching

[antonivanov]

Hi all.

I'm using VAR-SOM-MX6_V2 with TVP5150AM1PBS Video Decoder and with two video cameras.

For video cameras image viewing  I'm using command mxc_v4l2_tvin.out -ow 640 -oh 480 -fUYVY.

For cameras switching I'm using command echo 1 ( or 0) >> /sys/bus/i2c/devices/0-005d/input

During the cameras switching frame syncronisation takes too much time. How could I fix it?

Best regards, Anton Ivanov.

[igorpadykov]

Hi Anton

i.MX6 IPU has not hardware support improving camera

 switching frame syncronisation. One can try to debug it (measuring with

oscilloscope) which part of software takes much time, use mxc_v4l2_tvin

sources in imx-test package:
www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-test-5.7.tar.gz

Best regards
igor
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