[gst-devel] why this pipeline doesnot work

[Jerry Tan]

Here is my log file when I run GST_DEBUG=GST_CAPS:5 gst-launch 
videotestsrc ! ffmpegcolorspace ! ximagesink  >/tmp/dtu.log 2>&1
 I can not post it on pastebin.com, so I post it here. sorry for that

0:00:00.380226000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:2020:gst_pad_get_caps:<ffmpegcsp0:sink> get pad caps
0:00:00.380272000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:1926:gst_pad_get_caps_unlocked:<ffmpegcsp0:sink> get pad caps
0:00:00.380316000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:1930:gst_pad_get_caps_unlocked:<ffmpegcsp0:sink> 
dispatching to pad getcaps function
0:00:00.380368000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:2048:gst_pad_peer_get_caps:<ffmpegcsp0:src> get peer caps
0:00:00.380415000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:2020:gst_pad_get_caps:<ximagesink0:sink> get pad caps
0:00:00.380459000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:1926:gst_pad_get_caps_unlocked:<ximagesink0:sink> get pad caps
0:00:00.380503000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:1930:gst_pad_get_caps_unlocked:<ximagesink0:sink> 
dispatching to pad getcaps function
0:00:00.380572000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:1943:gst_pad_get_caps_unlocked:<ximagesink0:sink> pad 
getcaps returned 7c180
0:00:00.380620000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 7c260
0:00:00.380681000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 7bee0
0:00:00.380748000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 7c020
0:00:00.380897000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 6f700
0:00:00.380949000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 6f7c0
0:00:00.380999000  3007 2c1f0 DEBUG 
            GST_CAPS 
gstpad.c:1943:gst_pad_get_caps_unlocked:<ffmpegcsp0:sink> pad 
getcaps returned 6f7c0
0:00:00.381046000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 6f740
0:00:00.381188000  3007 2c1f0 LOG   
            GST_CAPS gstcaps.c:147:gst_caps_new_empty: 
created caps 6f720
ERROR: Pipeline doesn't want to pause.
ERROR: from element /pipeline0/videotestsrc0: Could not negotiate format
Additional debug info:
gstbasesrc.c(1837): gst_base_src_start (): /pipeline0/videotestsrc0:
Check your filtered caps, if any
Setting pipeline to NULL ...
FREEING pipeline ...