Hi There,
Does the latest released (Yocto 3.10.17 GA1.0.2) BSP support deinterlacing of video captured on the CSI port ? It would be preferable to deinterlace the input to avoid having to deal with it in the encoder or playback side.
I did see the post below, but it is fairly old so I figured I'd check for any updates
https://community.freescale.com/docs/DOC-93633#
Thanks, /Otto
Hi Otto
one can look at imx-test-3.10.17 mxc_v4l2_tvin.c
Patch to Support BT656 and BT1120 Output For i.MX6 BSP
Best regards
igor
Hi Igor,
Looks like mxc_v4l2_tvin.c does the deinterlacing on the output side, unless I'm mistaken... My main concern is when feeding CSI captured video to the encoder. I would like to avoid encoding interlaced video
Thanks,
/Otto
Hi Otto
one can deinterlace to buffer, then encode it with vpu.
~igor
Hi Igor,
Do you mean the following mentioned path to show de-interlaced image ?
Camera --> V4l2 Capture -->[interlaced data] V4l2 Display (what output device to use here? virtual FB?) [de-interlaced data] -> [how to pass de-inteaced buffer here?]Encode --> Decode [like to use GPU path here for display] --> LCD
I think mxc_vpu_test might be modified to do what i mentioned above. But as I am not much familiar with VPU and video processing, it doesn't look trivial to me.
As I am also facing this saw kind artifacts issue and looking for solutions. See my post: How to avoid aliasing artifacts using X11/GLES2 to display interlaced YUYV camera output?
Regards,
Vikash
Hi vikash
regarding csi deinterlacing one can look at simple SDK example
i.MX 6Series Platform SDK : Bare-metal SDK :
adv7180_capture.c, camera_test.c
Best regards
igor
Hi Igor,
I think you misunderstood my question. I am able to de-interlace using mxc_v4l2_tvin with -m option but it is V4l2 output path. I am not getting how to de-interlace using X11/GLES2.0 as v4l2 output path is not used with this?
Regards,
Vikash
Hi vikash
I am not aware of de-interlacing methods using GLES2.0.
Best regards
igor
Hi Igor,
Unfortunately I'm fairly green to the mx6 video processing. Any hints on what needs to be done or other similar code examples ?
Thanks,
/Otto
Hi Otto
I think one can also look at adv7180 example (adv7180_capture.c)
in SDK
i.MX 6Series Platform SDK : Bare-metal SDK
~igor
Will do. Thanks a lot for the quick replies. Have a good weekend !
/Otto
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