[meta-freescale] gstreamer1.0 imxvpudec creates artifacts under packet loss where avdec_h264 does not

[Rodger Benham]

Hello all,

I am having an issue with the imxvpudec plugin when decoding a h.264
stream using gstreamer1.0.

In the event of a network interruption, artifacts display in the
decoded output using imxvpudec. When swapped out in place to
avdec_h264, it does not garble the output.

When saving the h.264 output and decoding using avdec_h264 instead, it
doesn't have this issue. I would prefer to use hardware decoding
however.

This is the pipeline I am using to have established this bug is
deterministically reproducible:
gst-launch-1.0 -v filesrc location=video.h264 ! h264parse ! imxvpudec
! imxipuvideosink

To juxtapose the two results:

https://cloud.githubusercontent.com/assets/4905775/6100904/1d019d5e-b06d-11e4-854a-f6de87831361.JPG
- imxvpudec
https://cloud.githubusercontent.com/assets/4905775/6100907/47dda248-b06d-11e4-8aec-86f190654f95.JPG
- avdec_h264

I've created an issue for it on GitHub in the gstreamer-imx repo
(https://github.com/Freescale/gstreamer-imx/issues/28) but I am not
sure how frequented it is. I sincerely apologize if this is considered
cross-posting, this is my first time using a mailing list.

Are there any options I can use to skip frames with errors and instead
cause a small jerk in playback rather than producing corrupt output?

Kind Regards,
Rodger Benham