I have use gst-launch to run gst omx-mp3dec succesfully,
but I can not run omx-mpeg4dec succesfully
gst-lauch-0.10 filesrc location=./1.mp4 ! qtdemux ! omx_mpeg4dec !  ffmpegcolorspace ! videoscale ! ximagesink
it report get_buffer() failed
do you have some test cases or test example(commad) for me to use gst-launch to play an mp4 or h263 video file
Thank you!