[gst-devel] Got ERROR: pipeline doesn't want to preroll

[axel lin]

hi list,

I want to playback a Theora video file and output the audio to my
bluetooth headphone.

First, I try below command to playback an audio and output to
bluetooth headphone, it works.
$ gst-launch-0.10 -v filesrc location=ubuntu\ Sax.ogg ! oggdemux !
vorbisdec ! audioconvert ! audioresample ! alsasink device=bluetooth

Then, I playback the Theora video file and output audio to default
(wired) earphone, it works.

$ gst-launch-0.10 filesrc location=/home/ume/media/video/Experience\
ubuntu.ogg ! oggdemux name=d d. ! queue ! theoradec ! ffmpegcolorspace
! ximagesink d. ! queue ! vorbisdec ! audioconvert ! audioresample !
alsasink device=default
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstAudioSinkClock
Caught interrupt -- handling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 2968758593 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
FREEING pipeline ...

However,I got below error messages when playback the Theora video file
and output to bluetooth headphone.

$ gst-launch-0.10 -v filesrc
location=/home/ume/media/video/Experience\ ubuntu.ogg ! oggdemux
name=d d. ! queue ! theoradec ! ffmpegcolorspace ! ximagesink d. !
queue ! vorbisdec ! audioconvert ! audioresample ! alsasink
device=bluetooth
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/pipeline0/queue0.sink: caps = video/x-theora
/pipeline0/queue0.src: caps = video/x-theora
/pipeline0/theoradec0.sink: caps = video/x-theora
/pipeline0/queue1.sink: caps = audio/x-vorbis
/pipeline0/queue1.src: caps = audio/x-vorbis
/pipeline0/vorbisdec0.sink: caps = audio/x-vorbis
/pipeline0/vorbisdec0.src: caps = audio/x-raw-float, rate=(int)22050,
channels=(int)2, endianness=(int)1234, width=(int)32
/pipeline0/theoradec0.src: caps = video/x-raw-yuv,
format=(fourcc)I420, framerate=(fraction)25/1,
pixel-aspect-ratio=(fraction)1/1, width=(int)360, height=(int)288
/pipeline0/audioconvert0.src: caps = audio/x-raw-int,
endianness=(int)1234, signed=(boolean)true, width=(int)16,
depth=(int)16, rate=(int)22050, channels=(int)2
/pipeline0/audioconvert0.sink: caps = audio/x-raw-float,
rate=(int)22050, channels=(int)2, endianness=(int)1234, width=(int)32
/pipeline0/audioresample0.src: caps = audio/x-raw-int,
endianness=(int)1234, signed=(boolean)true, width=(int)16,
depth=(int)16, rate=(int)22050, channels=(int)2
/pipeline0/audioresample0.sink: caps = audio/x-raw-int,
endianness=(int)1234, signed=(boolean)true, width=(int)16,
depth=(int)16, rate=(int)22050, channels=(int)2
ERROR: from element /pipeline0/alsasink0: Could not get/set settings
from/on resource.
Additional debug info:
gstalsasink.c(507): set_hwparams (): /pipeline0/alsasink0:
Rate doesn't match (requested 22050Hz, get 0Hz)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
/pipeline0/audioresample0.src: caps = NULL
/pipeline0/audioresample0.sink: caps = NULL
/pipeline0/ffmpegcsp0.src: caps = video/x-raw-rgb, bpp=(int)32,
depth=(int)24, endianness=(int)4321, red_mask=(int)65280,
green_mask=(int)16711680, blue_mask=(int)-16777216, width=(int)360,
height=(int)288, framerate=(fraction)25/1,
pixel-aspect-ratio=(fraction)1/1
/pipeline0/ffmpegcsp0.sink: caps = video/x-raw-yuv,
format=(fourcc)I420, framerate=(fraction)25/1,
pixel-aspect-ratio=(fraction)1/1, width=(int)360, height=(int)288
/pipeline0/ffmpegcsp0.src: caps = NULL
/pipeline0/ffmpegcsp0.sink: caps = NULL
/pipeline0/audioconvert0.src: caps = NULL
/pipeline0/audioconvert0.sink: caps = NULL
/pipeline0/theoradec0.src: caps = NULL
/pipeline0/theoradec0.sink: caps = NULL
/pipeline0/vorbisdec0.src: caps = NULL
/pipeline0/vorbisdec0.sink: caps = NULL
/pipeline0/queue0.src: caps = NULL
/pipeline0/queue0.sink: caps = NULL
/pipeline0/queue1.src: caps = NULL
/pipeline0/queue1.sink: caps = NULL
/pipeline0/d.serial_1a122481: caps = NULL
/pipeline0/d.serial_0ce1be9e: caps = NULL
FREEING pipeline ...

Can someone help to fix this issue?

Below is the gstreamer version in my environment
$ dpkg -l |grep gst
ii  gstreamer-dbus-media-service
0.1.17-upstream-0ubuntu1~804um1               Media service for Ubuntu
Mobile
ii  gstreamer0.10-alsa                      0.10.18-3
                   GStreamer plugin for ALSA
ii  gstreamer0.10-ffmpeg                    0.10.3-6
                   FFmpeg plugin for GStreamer
ii  gstreamer0.10-gnomevfs                  0.10.18-3
                   GStreamer plugin for GnomeVFS
ii  gstreamer0.10-plugins-bad               0.10.6-5
                   GStreamer plugins from the "bad" set
ii  gstreamer0.10-plugins-bad-multiverse    0.10.6-1
                   GStreamer plugins from the "bad" set (Multiv
ii  gstreamer0.10-plugins-base              0.10.18-3
                   GStreamer plugins from the "base" set
ii  gstreamer0.10-plugins-farsight          0.12.5-2ubuntu1
                   plugins for Gstreamer for Audio/Video confer
ii  gstreamer0.10-plugins-good              0.10.7-3ubuntu0.1
                   GStreamer plugins from the "good" set
ii  gstreamer0.10-plugins-ugly              0.10.7-3ubuntu1
                   GStreamer plugins from the "ugly" set
ii  gstreamer0.10-tools                     0.10.18-4ubuntu1
                   Tools for use with GStreamer
ii  gstreamer0.10-x                         0.10.18-3
                   GStreamer plugins for X11 and Pango
ii  libgstreamer-plugins-base0.10-0         0.10.18-3
                   GStreamer libraries from the "base" set
ii  libgstreamer0.10-0                      0.10.18-4ubuntu1
                   Core GStreamer libraries and elements
ii  libgstreamer0.10-0-dbg                  0.10.18-4ubuntu1
                   Core GStreamer libraries and elements
ii  python-gst0.10                          0.10.11-1
                   generic media-playing framework (Python bind

Thanks for your help,
Axel