GStreamer and Rasperry PI

pauly24 paul.gangemi86 at gmail.com
Thu Jun 21 08:51:56 PDT 2012


Ok I will give this another try when I get home, have some more questions
though.

1) What can I use for a real audio sink on the raspberry?

2) Also how can I be missing a h264 plugin, isn't that the purpose of
omxh264dec?

3) I thought this below code would work (That's if this launch code is
correct)

pi at raspberrypi /opt/vc/src/hello_pi/hello_video $ gst-launch-0.10 filesrc
location="2000.264" ! omxh264dec ! video/x-raw-yuv, framerate=25/1,
width=640, height=360 ! ffmpegcolorspace ! fbdevsink 
The system just says prerolling and hangs.

The 2000.264 is a much smaller h264 file. Its only a 2Mb/30s h264 file.
Opposed to a 30Mb/30sec that comes with the raspberry, or is this missing
the h264parse as well?

4) When you say there is no rendering acceleration, what does the omxh264dec
do? does it just use the GPU for hardware acceleration decoding then passes
it to the usual video stream instead of the hardware accelerated video
stream? (Sorry for my ignorance I'm new to this)

Thanks in advance.

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