Buffer Seems to Be Filling Up

Dick Morris dmorris2521 at yahoo.com
Thu Nov 21 04:53:16 PST 2013 

Hi all,

(Thank you to Peter for pointing out the issue with the missing muxer previously and now I seem to be only one step from success with this script)

I'm successfully able to stream h264 from a Raspberry Pi using gstreamer.  I'm able to view it with one script and I'm able to save it to the drive with another using mpegtsmux muxer.  However, when I try to use the "tee" pipe fitting to do both at the same time, I get a video window that freezes after a couple of seconds and a ts file saved to the hard drive that I'm able to play back, but it only last a few seconds.  


As the scripts begin to run, I see these errors:

0:00:00.155382958  7427      0x255c990 WARN                   libav 
gstavviddec.c:669:gst_ffmpegviddec_get_buffer:<avdec_h264-0> 
already alloc'ed output buffer for frame
0:00:00.155428635  7427      0x255c990 ERROR                  libav :0:: get_buffer() failed (-1 0 (nil))

The whole script and launch sequence is below, thanks very much in advance for any feedback:


user1 at host:~$  gst-launch-1.0 -v -e --gst-debug-level=3 tcpclientsrc host=192.168.0.202 port=5000 ! gdpdepay ! rtph264depay ! tee name=h264split h264split. ! queue ! avdec_h264 ! autovideosink  h264split. ! queue ! mpegtsmux ! filesink location=/home/user1/test.ts 
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
0:00:00.037623149  7427      0x25719e0 FIXME                default gstutils.c:3622:gst_pad_create_stream_id_printf_valist:<tcpclientsrc0:src> Creating random stream-id, consider implementing a deterministic way of creating a stream-id
/GstPipeline:pipeline0/GstGDPDepay:gdpdepay0.GstPad:src: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)"J2QAKKwrQDwBE/LAPEiagA\=\=\,KO4BNyw\=", payload=(int)96, ssrc=(uint)3686990052, timestamp-offset=(uint)343001072, seqnum-offset=(uint)64749
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/GstTee:h264split.GstTeePad:src_0: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/MpegTsMux:mpegtsmux0.GstPad:sink_65: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/MpegTsMux:mpegtsmux0.GstPad:sink_65: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)au
/GstPipeline:pipeline0/MpegTsMux:mpegtsmux0.GstPad:src: caps = video/mpegts, systemstream=(boolean)true, packetsize=(int)188
/GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/mpegts, systemstream=(boolean)true, packetsize=(int)188
/GstPipeline:pipeline0/MpegTsMux:mpegtsmux0.GstPad:src: caps = video/mpegts, systemstream=(boolean)true, packetsize=(int)188, streamheader=(buffer)< 47400030a600ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0000b00d0001c100000001e020a2c32941, 474020308b00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0002b0280001c10000e041f00c050448444d5688040ffffcfc1be041f00a050848444d56ff1b443f5a3175c0 >
/GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/mpegts, systemstream=(boolean)true, packetsize=(int)188, streamheader=(buffer)< 47400030a600ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0000b00d0001c100000001e020a2c32941, 474020308b00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0002b0280001c10000e041f00c050448444d5688040ffffcfc1be041f00a050848444d56ff1b443f5a3175c0 >
/GstPipeline:pipeline0/avdec_h264:avdec_h264-0.GstPad:src: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage.GstPad:sink: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/avdec_h264:avdec_h264-0.GstPad:src: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage.GstPad:sink: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)bt709, framerate=(fraction)0/1
0:00:00.155382958  7427      0x255c990 WARN                   libav gstavviddec.c:669:gst_ffmpegviddec_get_buffer:<avdec_h264-0> already alloc'ed output buffer for frame
0:00:00.155428635  7427      0x255c990 ERROR                  libav :0:: get_buffer() failed (-1 0 (nil))
0:00:00.155451734  7427      0x255c990 ERROR                  libav :0:: decode_slice_header error
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock


Jay
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