[gstreamer-bugs] [Bug 529672] New: [videomixer] Big latency and bad framerate while mixing multiple live streams
GStreamer (bugzilla.gnome.org)
bugzilla-daemon at bugzilla.gnome.org
Thu Apr 24 01:18:11 PDT 2008
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GStreamer | gst-plugins-good | Ver: 0.10.7
Summary: [videomixer] Big latency and bad framerate while mixing
multiple live streams
Product: GStreamer
Version: 0.10.7
Platform: Other
OS/Version: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: gst-plugins-good
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: sakdean at gmail.com
QAContact: gstreamer-bugs at lists.sourceforge.net
GNOME version: 2.21/2.22
GNOME milestone: Unspecified
Please describe the problem:
When mixing multiple live streams with non-live streams the output framerate is
inconsistent and a big latency gain (10s+ for QCIF output) is achieved.
Steps to reproduce:
1. 2 client machines: with pipeline: gst-launch videotestsrc ! ffmpegcolorspace
! videoscale ! video/x-raw-yuv,format=\(fourcc\)AYUV,width=176,height=144 !
ffmpegcolorspace ! ffenc_h263 ! rtph263pay ! udpsink port=some_port
host=mixer_host
2. on the mixer host side: gst-launch udpsrc port=some_port1 !
gstrtpjitterbuffer ! rtph263depay ! ffdec_h263 ! ffmpegcolorspace ! videoscale
! video/x-raw-yuv,format=\(fourcc\)AYUV,width=88,height=72 ! mix.
gst-launch udpsrc port=some_port1 ! gstrtpjitterbuffer ! rtph263depay !
ffdec_h263 ! ffmpegcolorspace ! videoscale !
video/x-raw-yuv,format=\(fourcc\)AYUV,width=176,height=144 ! mix.
videomixer name=mix. ! ffmpegcolorspce ! ximagesink
Actual results:
The output framerate is not smooth. Big latency gain.
Expected results:
The output video should be smooth, with as little latency as possible
Does this happen every time?
yes
Other information:
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