delay in pipeline for back record.

[bamboosso]

Hello.

First of all, I'm modifying old embedded system and only option for me is to
use gstreamer 0.10.36 (becouse of dependencies).

I need to make back record (about 10 seconds) of video after button is
pressed.

My pipeline:

rtpsrc location=rtsp://192.168.1.140:554/profile4/media.smp !
gstrtpjitterbuffer ! queue min-threshold-time=10000000000
max-size-time=20000000000 leaky=2 ! rtph264depay ! fakesink

Then I use pad blocking mechanism to change pipeline to:

rtpsrc location=rtsp://192.168.1.140:554/profile4/media.smp !
gstrtpjitterbuffer ! queue min-threshold-time=10000000000
max-size-time=20000000000 leaky=2 ! rtph264depay ! legacyh264parse
 access-unit=true output-format=0 ! mp4mux ! filesink location=test.mp4

This works and I get nice recorded video (after sending EOF to pipeline
ofcourse). But the delay is not 10 seconds like queue threshold is set to. I
get about 2 seconds delay NO MATTER WHAT I SET TO QUEUE min-threshold-time
parameter.

Using this pipeline to play video I see delay of 10 seconds (or whatever I
set to queue):
rtpsrc location=rtsp://192.168.1.140:554/profile4/media.smp !
gstrtpjitterbuffer ! queue min-threshold-time=10000000000
max-size-time=20000000000 leaky=2 ! rtph264depay ! legacyh264parse
 access-unit=true output-format=0 ! mfw_vpudecoder name=vpudecoder
codec-type=0 ! queue ! mfw_isink sync=false max-lateness=100000000 mode=1

Why queue delay works when playing byt not when recording???

I've tryed also to add latency to rtpsrc and jitternbuffer without success.

Please help

Maciek




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