gstreamer

[LRN]

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On 16.04.2012 13:27, xiaowen wrote:
> Hi: I am compliting the gstremer,when i run "gst-launch -v playbin2
> uri=file:///sdcard/b.mp4",there are some errors.Could you help me
> ?
> 
> 
> 
> 
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0:
> connection-speed = 0 
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: source =
> (GstFileSrc) source 
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind.GstPad:src:
> caps = video/quicktime, variant=(string)iso Pipeline is PREROLLING
> ... 
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstQTDemux:qtdemux0.GstPad:sink:
> caps = video/quicktime, variant=(string)iso Missing element: MPEG-4
> Video decoder WARNING: from element
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: No decoder
> available for type 'video/mpeg, mpegversion=(int)4,
> parsed=(boolean)true, systemstream=(boolean)false'. Additional
> debug info: 
> /opt/gstreamer/external/gstreamer_aggregate/gst-plugins-base/gst/playback/gsturidecodebin.c(867):
> unknown_type_cb ():
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0
> 
No decoder available

Try installing gst-ffmpeg.
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