Red Hat Bugzilla – Bug 434902
istanbul produces (probably) ill-formed ogg
Last modified: 2008-11-26 17:46:59 EST
When I view a video created with istanbul in totem, totem crashes when done
playing back the video. This does not happen with other videos that I play in
totem. See bug 434900 for the stack trace from totem.
As per the irc discussion, istanbul is a thin layer of gui over gstreamer.
ALL video encoding is handled by using gstreamer pipelines.
What I need you to do, is attempt to find a reproducible situation and record
the pipeline that istanbul used, so we can test that pipeline directly in
gst-launch on the cmdline.
You can see what the final pipeline is that istanbul constructs and passes to
gst, by running istanbul in a terminal. You'll see a message like this:
DEBUG: final pipeline: istximagesrc name=videosource display-name=:0.0
screen-num=0 use-damage=false ! video/x-raw-rgb,framerate=10/1 ! videorate !
ffmpegcolorspace ! videoscale method=1 !
video/x-raw-yuv,width=512,height=384,framerate=10/1 ! theoraenc ! oggmux
name=mux ! filesink location=/tmp/tmpS3UN0V
That's the magic..and its all gst magic. You can use the exact same pipeline via
gst-launch in a shell script(appropriately escaped of course) and gst will
produce the same video.
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