[gst-devel] link qtdemux to h264parse

[vineeth]

Probably you dont need a h264parse after qtdemux, since output from the
qtdemux will be NAL units which can be directly fed to decoder.



On Tue, Mar 30, 2010 at 2:37 PM, ericcardmanNo3 <daniel.kuhne at yahoo.de>wrote:

>
> does anyone know how to successful link qtdemux to h264parse filter?
> I demux a mp4 file with qtdemux and the resulting video stream is with
> NAL,SPS,PPS. Therefore i thought i could link to h264parse and then let
> push
> data to my decoder plugin.
>
> I do:
> gst-launch -vvv filesrc location=r.mp4 ! qtdemux name=demux demux.video_00
> !
> q
> ueue!video/x-h264!h264parse! decodebin !
> video/x-raw-yuv,format=\(fourcc\)YV12,w
> idth=320,height=240,framerate=\(fraction\)1/30 ! ffmpegcolorspace !
> fbdevsink
>
> GST_DEBUG shows:
> Setting pipeline to PAUSED ...
> 0:00:00.793132250  1145    0x887d0 INFO                 qtdemux
> qtdemux.c:5383:qtdemux_parse_tree:<demux> timescale: 1000
> 0:00:00.794729875  1145    0x887d0 INFO                 qtdemux
> qtdemux.c:5384:qtdemux_parse_tree:<demux> duration: 152360
> 0:00:00.796545694  1145    0x887d0 INFO                 qtdemux
> qtdemux.c:4253:qtdemux_parse_trak:<demux> (null)
> Pipeline is PREROLLING ...
> 0:00:00.863135518  1145    0x887d0 WARN                 qtdemux
> qtdemux.c:4399:qtdemux_parse_trak:<demux> unknown version 00000000
> 0:00:00.864528541  1145    0x887d0 INFO                 qtdemux
> qtdemux.c:4518:qtdemux_parse_trak:<demux> (null)
> 0:00:00.938093392  1145    0x887d0 INFO                 qtdemux
> qtdemux.c:5410:qtdemux_parse_tree:<demux> (null)
> 0:00:00.942662521  1145    0x887d0 WARN                 qtdemux
> qtdemux.c:2448:gst_qtdemux_loop:<demux> error: streaming stopped, reason
> not-linked
> ERROR: from element /GstPipeline:pipeline0/GstQTDemux:demux: GStreamer
> encountered a general stream error.
> Additional debug info:
> qtdemux.c(2448): gst_qtdemux_loop ():
> /GstPipeline:pipeline0/GstQTDemux:demux:
> streaming stopped, reason not-linked
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> /GstPipeline:pipeline0/GstQTDemux:demux.GstPad:audio_00: caps = NULL
> /GstPipeline:pipeline0/GstQTDemux:demux.GstPad:video_00: caps = NULL
> Freeing pipeline ...
>
>
> Does anyone know what to do here?
>
> Thx,
> Daniel-
> --
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>
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