#/bin/bash
#casio_prototype.sh
gst-launch \
videotestsrc pattern=2 ! \
videorate ! \
videoscale ! \
video/x-raw-yuv,format=\(fourcc\)I420,width=112,height=80,rate=\(fraction\)4/1 ! \
ffmpegcolorspace ! \
textoverlay ! \
ffmpegcolorspace ! \
tee ! \
queue ! \
mix. \
filesrc location=video.ogg ! \
decodebin ! \
queue ! \
videoscale ! \
video/x-raw-yuv,format=\(fourcc\)AYUV,width=320,height=240 ! \
ffmpegcolorspace ! \
videomixer name=mix ! \
ffmpegcolorspace ! \
videoscale ! \
sdlvideosink \
videotestsrc pattern=1 ! \
videoscale ! \
video/x-raw-yuv,format=\(fourcc\)I420,width=320,height=240 ! \
ffmpegcolorspace ! \
tee ! \
queue ! \
mix. \

$ ./casio_prototype.sh 
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /pipeline0/decodebin0/oggdemux0: Internal data stream error.
Additional debug info:
gstoggdemux.c(3085): gst_ogg_demux_loop (): /pipeline0/decodebin0/oggdemux0:
stream stopped, reason error
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...

$ ./casio_prototype.sh 2>&1 | grep -i error0:00:04.778585000 17953 0xb3a24890 LOG         GST_SCHEDULING gstpad.c:3455:gst_pad_chain_unchecked:<theoradec1:sink> called chainfunction &0xb3baa0b0, returned error
0:00:04.778655000 17953 0xb3a24890 LOG         queue_dataflow gstqueue.c:1010:gst_queue_loop:<queue3> pause task, reason:  error
0:00:04.778830000 17953 0x81e3328 LOG         queue_dataflow gstqueue.c:910:gst_queue_chain:<queue3> exit because task paused, reason: error
0:00:04.778897000 17953 0x81e3328 LOG         GST_SCHEDULING gstpad.c:3455:gst_pad_chain_unchecked:<queue3:sink> called chainfunction &gst_queue_chain, returned error
0:00:04.778935000 17953 0x81e3328 WARN              oggdemux gstoggdemux.c:1113:gst_ogg_pad_stream_out:<oggdemux0> could not submit packet for stream 37110686, error: -5
0:00:04.778976000 17953 0x81e3328 LOG               oggdemux gstoggdemux.c:3058:gst_ogg_demux_loop:<oggdemux0> pausing task, reason error
0:00:04.779045000 17953 0x81e3328 WARN              oggdemux gstoggdemux.c:3085:gst_ogg_demux_loop:<oggdemux0> error: Internal data stream error.
0:00:04.779062000 17953 0x81e3328 WARN              oggdemux gstoggdemux.c:3085:gst_ogg_demux_loop:<oggdemux0> error: stream stopped, reason error
0:00:04.779219000 17953 0x81e3328 INFO      GST_ERROR_SYSTEM gstelement.c:1619:gst_element_message_full:<oggdemux0> posting message: Internal data stream error.
0:00:04.779287000 17953 0x81e3328 LOG            GST_MESSAGE gstmessage.c:287:gst_message_new_custom: source oggdemux0: creating new message 0x81e5418 error
0:00:04.779338000 17953 0x81e3328 DEBUG              GST_BUS gstbus.c:335:gst_bus_post:<bus0> [msg 0x81e5418] posting on bus, type error, GstMessageError, gerror=(GstGError)(NULL), debug=(string)"gstoggdemux.c\(3085\):\ gst_ogg_demux_loop\ \(\):\ /pipeline0/decodebin0/oggdemux0:\012stream\ stopped\,\ reason\ error"
0:00:04.779388000 17953 0x81e3328 DEBUG                  bin gstbin.c:2623:gst_bin_handle_message_func:<decodebin0> [msg 0x81e5418] handling child oggdemux0 message of type error
0:00:04.779439000 17953 0x81e3328 DEBUG              GST_BUS gstbus.c:335:gst_bus_post:<bus1> [msg 0x81e5418] posting on bus, type error, GstMessageError, gerror=(GstGError)(NULL), debug=(string)"gstoggdemux.c\(3085\):\ gst_ogg_demux_loop\ \(\):\ /pipeline0/decodebin0/oggdemux0:\012stream\ stopped\,\ reason\ error"
0:00:04.779487000 17953 0x81e3328 DEBUG                  bin gstbin.c:2623:gst_bin_handle_message_func:<pipeline0> [msg 0x81e5418] handling child oggdemux0 message of type error
0:00:04.779538000 17953 0x81e3328 DEBUG              GST_BUS gstbus.c:335:gst_bus_post:<bus2> [msg 0x81e5418] posting on bus, type error, GstMessageError, gerror=(GstGError)(NULL), debug=(string)"gstoggdemux.c\(3085\):\ gst_ogg_demux_loop\ \(\):\ /pipeline0/decodebin0/oggdemux0:\012stream\ stopped\,\ reason\ error"
0:00:04.779732000 17953 0x81e3328 INFO      GST_ERROR_SYSTEM gstelement.c:1642:gst_element_message_full:<oggdemux0> posted error message: Internal data stream error.
0:00:04.779633000 17953 0x804e050 DEBUG              GST_BUS gstbus.c:523:gst_bus_timed_pop:<bus2> pop from bus, have 1 messages, got message 0x81e5418, error
ERROR: from element /pipeline0/decodebin0/oggdemux0: Internal data stream error.
stream stopped, reason error
ERROR: pipeline doesn't want to preroll.