[gst-devel] How to force ffdec_mpeg4 width and heigth?

[Mailing List SVR]

Hi all I'm trying to see an mpeg4 video over rtp, I'm using the following 
pipeline:

gst-launch-0.10 -v udpsrc port=2546 caps="application/x-rtp, 
media=(string)video, payload=(int)121, clock-rate=(int)90000, encoding-
name=(string)MP4V-ES, profile-level-id=(string)1" ! rtpmp4vdepay ! ffdec_mpeg4 ! 
autovideosink

but ffdec_mpeg4 autodetect width and height =0, please see the verbose pipeline 
output above?

How can I force this parameters?


Setting pipeline to PAUSED ...                                                                        
Pipeline is live and does not need PREROLL ...                                                        
Setting pipeline to PLAYING ...                                                                       
New clock: GstSystemClock                                                                             
/GstPipeline:pipeline0/GstRtpMP4VDepay:rtpmp4vdepay0.GstPad:src: caps = 
video/mpeg, mpegversion=(int)4, systemstream=(boolean)false                                                                         
/GstPipeline:pipeline0/GstRtpMP4VDepay:rtpmp4vdepay0.GstPad:sink: caps = 
application/x-rtp, media=(string)video, payload=(int)121, clock-
rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)1                                                                                               
/GstPipeline:pipeline0/ffdec_mpeg4:ffdec_mpeg40.GstPad:sink: caps = video/mpeg, 
mpegversion=(int)4, systemstream=(boolean)false                                                                             
/GstPipeline:pipeline0/ffdec_mpeg4:ffdec_mpeg40.GstPad:src: caps = video/x-raw-
yuv, width=(int)0, height=(int)0, framerate=(fraction)25/1, 
format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/ffdec_mpeg4:ffdec_mpeg40.GstPad:src: caps = video/x-raw-
yuv, width=(int)704, height=(int)576, framerate=(fraction)30000/1, 
format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-
ratio=(fraction)12/11
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-
actual-sink-xvimage.GstPad:sink: caps = video/x-raw-yuv, width=(int)704, 
height=(int)576, framerate=(fraction)30000/1, format=(fourcc)I420, 
interlaced=(boolean)false, pixel-aspect-ratio=(fraction)12/11
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink: caps 
= video/x-raw-yuv, width=(int)704, height=(int)576, 
framerate=(fraction)30000/1, format=(fourcc)I420, interlaced=(boolean)false, 
pixel-aspect-ratio=(fraction)12/11
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink.GstProxyPad:proxypad0: 
caps = video/x-raw-yuv, width=(int)704, height=(int)576, 
framerate=(fraction)30000/1, format=(fourcc)I420, interlaced=(boolean)false, 
pixel-aspect-ratio=(fraction)12/11
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