Broken picture after l4t decode+transform interlaced source

Hi,

in l4t sdk 32.4.2 broke transcoder interlaced h264 source. After transcode picture twitching.

mag_broken

Reproduce:

gst-launch-1.0 filesrc location=mag0.mp4 ! qtdemux name=demux demux.video_0 ! queue ! h264parse ! nvv4l2decoder ! nvvidconv  ! 'video/x-raw(memory:NVMM), format=(string)I420' ! nvv4l2h264enc bitrate=5000000 ! h264parse ! queue ! matroskamux name=mux ! filesink location=mag.mkv -e

Downgrade to # R32 (release), REVISION: 2.3, GCID: 17644089, BOARD: t186ref, EABI: aarch64, DATE: Tue Nov 5 21:48:17 UTC 2019 solve problem.

Hi,
r32.4.3 is production release. Please try this version. If the issue is still present, please share the video file so that we can reproduce the issue.

Hi,

last r32.4.3 also broken. Looks like bug from nvbuffer api, because my v4l2 code produce also twitching picture. For you fast investigate, gstreamer without nvvidconv create picture without twiching and source must be interlaced.

Hi,
Please share the video clip so that we can reproduce the issue.

Hi,

interlaced sample https://drive.google.com/file/d/1I4KAwT-2-Wf69x7GeKgZZwW9PGerui0K/view?usp=sharing

Hi,
We can reproduce the issue with the video file. Will investigate further and update.