Gstreamer nvv4l2h264enc recorded video flicker issue

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi,

I am capturing video using gstreamer with nvv4l2h264enc in recorded video i am having flickering isuue.

below is my pileline

gst-launch-1.0 -e -v v4l2src device=“/dev/video0” do-timestamp=true ! “video/x-raw,format=BGRx,width=1680,height=1050” ! clockoverlay halignment=right valignment=bottom text=“Edge City” shaded-background=true font-desc=“Sans, 36” ! gdkpixbufoverlay location=spectross.png ! nvvidconv ! “video/x-raw(memory:NVMM),width=1680,height=1050,format=I420,framerate=60/1” ! nvv4l2h264enc maxperf-enable=1 insert-sps-pps=1 insert-vui=1 profile=4 preset-level=4 control-rate=1 bitrate=8400000 ! h264parse ! rtph264pay ! shmsink socket-path=/tmp/test3 shm-size=20000000 wait-for-connection=false pulsesrc device=alsa_input.usb-BurrBrown_from_Texas_Instruments_USB_AUDIO_CODEC-00.analog-stereo ! queue ! audioconvert ! lamemp3enc ! rtpmpapay ! shmsink socket-path=/tmp/audio3 wait-for-connection=false shm-size=1000000

gst-launch-1.0 -v -e shmsrc socket-path=/tmp/test3 do-timestamp=true is-live=true ! application/x-rtp,clock-rate=90000 ! tee name=t ! queue ! rtph264depay ! video/x-h264,stream-format=avc,alignment=au ! h264parse ! matroskamux name=mux ! filesink location=video1.mkv sync=true shmsrc socket-path=/tmp/audio3 do-timestamp=true is-live=true ! application/x-rtp,media=audio,clock-rate=90000,encoding-name=MPA ! tee name=aud ! queue ! rtpmpadepay ! mpegaudioparse ! mux.

i am attaching recorded video also please have look and tell me what setting i should chane for encoder or anything else

Regards
Parth

3

Hi,
The issue may be from audio/video synchronization. Please try video-only case. Check if it happens in video-only pipelines.

4

Hi, DaneLLL

I have recorded only video as per your suggestion but isuue is still there. so can you suggest any other possible sollution.

5

Hi,
Please check if it happens in saving to local file.

gst-launch-1.0 -e -v v4l2src device=/dev/video0 do-timestamp=true ! 'video/x-raw,format=BGRx,width=1680,height=1050' ! clockoverlay halignment=right valignment=bottom text="Edge City" shaded-background=true font-desc="Sans, 36" ! gdkpixbufoverlay location=spectross.png ! nvvidconv ! 'video/x-raw(memory:NVMM),width=1680,height=1050,format=I420,framerate=60/1' ! nvv4l2h264enc maxperf-enable=1 insert-sps-pps=1 insert-vui=1 profile=4 preset-level=4 control-rate=1 bitrate=8400000 ! h264parse ! matroskamux ! filesink location=a.mkv

gst-launch-1.0 -e -v v4l2src device=/dev/video0 do-timestamp=true ! 'video/x-raw,format=BGRx,width=1680,height=1050' ! nvvidconv ! 'video/x-raw(memory:NVMM),width=1680,height=1050,format=I420,framerate=60/1' ! nvv4l2h264enc maxperf-enable=1 insert-sps-pps=1 insert-vui=1 profile=4 preset-level=4 control-rate=1 bitrate=8400000 ! h264parse ! matroskamux ! filesink location=a.mkv

or video preview:

gst-launch-1.0 -e -v v4l2src device=/dev/video0 do-timestamp=true ! 'video/x-raw,format=BGRx,width=1680,height=1050' ! nvvidconv ! 'video/x-raw(memory:NVMM),width=1680,height=1050,format=I420,framerate=60/1' ! nvoverlaysink
6

HI DaneLLL,

This isuue is because of source i am taking i have check it on preview.
and it only came if i am taking input from widows as my input is VGA. in ubantu there is no issue.

Regards
Parth.