[gst-devel] Firewire cameras with DirectShow

Fri Jun 26 18:40:01 CEST 2009

ok so your firewire camera only supports systemstream=true.

try with the default width, height and framerate, and without deinterlacing:
gst-launch-0.10 dshowvideosrc ! "video/x-dv, systemstream=true" ! ffdemux_dv
! ffdec_dvvideo ! ffmpegcolorspace ! directdrawsink

If still low fps, you could try to set lower width, height and framerate, or
qdd a queue before ffmpegcolorspace.

You could also try:

gst-launch-0.10 dshowvideosrc ! "video/x-dv, systemstream=true" ! decodebin
! ffmpegcolorspace ! directdrawsink
and
gst-launch-0.10 dshowvideosrc ! decodebin ! ffmpegcolorspace !
directdrawsink

About the crash I think it came from:  format=dvsd
the right way is: format=(fourcc)dvsd

Julien

2009/6/26 Phil Rendell <philrendell at gmail.com>

>
>
> 2009/6/26 Julien Isorce <julien.isorce at gmail.com>
>
>> Forgot this problem then we will use true and false, instead of 0 and 1.
>> Sorry for waste of time.
>
>
> No problem - without your help I would be completely stuck and end up being
> forced to do something drastic like hunt around in the source code before
> giving up!
>
>
>
>> Phil, can you tell me if
>> gst-launch-0.10.exe dshowvideosrc ! "video/x-dv, systemstream=false,
>> width=640, height=480, framerate=10" ! fakesink
>> leads to the same result as true ?
>
>
> No, it doesn't. It gives me the usual link error:
>
> D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
> "video/x-dv, systemstream=false, width=640, height=480, framerate=30" !
> fakesink
> WARNING: erroneous pipeline: could not link dshowvideosrc0 to fakesink0
>
>
>
>> About the screenshot. I can see that only the pin00 can be handled by
>> dshowvideosrc because it's
>> MEDIATYPE_Video and MEDIASUBTYPE_dvsd
>> but unfortunatelly grapedit does not tell us if it's FORMAT_DvInfo (case
>> systemstream=true)
>> or FORMAT_VideoInfo (case systemstream=false)
>> About the warnings, do not care about it, it seems that
>> granularityVideoWidth/Height are not set by your camera driver.
>> Or has no sense in case of systemstream=true.
>>
>
> Ok, thanks.
>
>
>> Anyway, for now I just do not know how to decode or render a video/x-dv,
>> systemstream=true.
>> I am sure someone else knows ?
>
>
> Good idea with the ffdemux_dv. The command you suggested didn't quite work,
> but once I added the dv decoder you suggested in a previous email and added
> a deinterlacer I managed to get something to display, although I ended up
> with a pretty bad 0.5-1 fps. Could I be doing something wrong?
>
> Thanks,
>
> Phil
>
>
> Without the decoder (runs straight through with no visual output):
>
> D:\rendell_p\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v
> dshowvideosrc ! "video/x-dv, systemstream=true, width=720, height=576,
> framerate=25" ! ffdemux_dv ! ffmpegcolorspace ! directdrawsink
> Setting pipeline to PAUSED ...
> ** (gst-launch-0.10:2500): WARNING **: your desired video size is not valid
> : 720 mod 1244160 !=0
> ** (gst-launch-0.10:2500): WARNING **: your desired video size is not valid
> : 576 mod 1577311108 !=0
> /GstPipeline:pipeline0/GstDshowVideoSrc:dshowvideosrc0.GstPad:src: caps =
> video/x-dv, systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps =
> video/x-dv,systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps =
> video/x-dv, systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:sink: caps =
> video/x-dv, systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> ERROR: from element /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0: Internal
> data stream error.
> Additional debug info:
> ..\..\ext\ffmpeg\gstffmpegdemux.c(1456): gst_ffmpegdemux_loop ():
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0:
> streaming stopped, reason not-linked
> Execution ended after 187550000 ns.
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:audio_01: caps = NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:audio_00: caps = NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:video_00: caps = NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:sink: caps = NULL
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = NULL
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = NULL
> /GstPipeline:pipeline0/GstDshowVideoSrc:dshowvideosrc0.GstPad:src: caps =
> NULL
> Setting pipeline to NULL ...
> FREEING pipeline ...
>
>
> With the decoder and deinterlacing (NOTE: there are no errors until I close
> the window):
>
> D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
> "video/x-dv, systemstream=true, width=720, height=576, framerate=25" !
> ffdemux_dv ! ffdec_dvvideo ! ffdeinterlace ! ffmpegcolorspace !
> directdrawsink
> Setting pipeline to PAUSED ...
> ** (gst-launch-0.10:432): WARNING **: your desired video size is not valid
> : 720 mod 1244160 !=0
> ** (gst-launch-0.10:432): WARNING **: your desired video size is not valid
> : 576 mod 1577311108 !=0
> /GstPipeline:pipeline0/GstDshowVideoSrc:dshowvideosrc0.GstPad:src: caps =
> video/x-dv, systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps =
> video/x-dv,systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps =
> video/x-dv, systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:sink: caps =
> video/x-dv, systemstream=(boolean)true, width=(int)720, height=(int)576,
> framerate=(int)25
> /GstPipeline:pipeline0/ffdec_dvvideo:ffdec_dvvideo0.GstPad:sink: caps =
> video/x-dv, width=(int)720, height=(int)576, framerate=(fraction)25/1,
> systemstream=(boolean)false, format=(fourcc)I420
> /GstPipeline:pipeline0/ffdec_dvvideo:ffdec_dvvideo0.GstPad:src: caps =
> video/x-raw-yuv, width=(int)720, height=(int)576, framerate=(fraction)25/1,
> format=(fourcc)I420
> /GstPipeline:pipeline0/GstFFMpegDeinterlace:ffmpegdeinterlace0.GstPad:src:
> caps= video/x-raw-yuv, width=(int)720, height=(int)576,
> framerate=(fraction)25/1, format=(fourcc)I420
> /GstPipeline:pipeline0/GstFFMpegDeinterlace:ffmpegdeinterlace0.GstPad:sink:
> caps = video/x-raw-yuv, width=(int)720, height=(int)576,
> framerate=(fraction)25/1, format=(fourcc)I420
> /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps =
> video/x-raw-rgb, width=(int)720, height=(int)576, framerate=(fraction)25/1,
> bpp=(int)32, depth=(int)24, endianness=(int)4321, red_mask=(int)65280,
> green_mask=(int)16711680, blue_mask=(int)-16777216
> /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps =
> video/x-raw-yuv, width=(int)720, height=(int)576, framerate=(fraction)25/1,
> format=(fourcc)I420
> /GstPipeline:pipeline0/GstDirectDrawSink:directdrawsink0.GstPad:sink: caps
> = video/x-raw-rgb, width=(int)720, height=(int)576,
> framerate=(fraction)25/1, bpp=(int)32, depth=(int)24, endianness=(int)4321,
> red_mask=(int)65280, green_mask=(int)16711680, blue_mask=(int)-16777216
> ERROR: from element /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0: Internal
> data stream error.
> Additional debug info:
> ..\..\ext\ffmpeg\gstffmpegdemux.c(1456): gst_ffmpegdemux_loop ():
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0:streaming stopped, reason
> error
> Execution ended after 6375163000 ns.
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> /GstPipeline:pipeline0/GstDirectDrawSink:directdrawsink0.GstPad:sink: caps
> = NULL
> /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = NULL
> /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = NULL
> /GstPipeline:pipeline0/GstFFMpegDeinterlace:ffmpegdeinterlace0.GstPad:src:
> caps= NULL
> /GstPipeline:pipeline0/GstFFMpegDeinterlace:ffmpegdeinterlace0.GstPad:sink:
> caps = NULL
> /GstPipeline:pipeline0/ffdec_dvvideo:ffdec_dvvideo0.GstPad:src: caps = NULL
> /GstPipeline:pipeline0/ffdec_dvvideo:ffdec_dvvideo0.GstPad:sink: caps =
> NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:audio_01: caps = NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:audio_00: caps = NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:video_00: caps = NULL
> /GstPipeline:pipeline0/ffdemux_dv:ffdemux_dv0.GstPad:sink: caps = NULL
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = NULL
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = NULL
> /GstPipeline:pipeline0/GstDshowVideoSrc:dshowvideosrc0.GstPad:src: caps =
> NULL
> Setting pipeline to NULL ...
> FREEING pipeline ...
>
>
>
>
>
>>
>>
>> Julien
>>
>>
>>
>>
>>   2009/6/26 Phil Rendell <philrendell at gmail.com>
>>
>>>
>>> 2009/6/26 Julien Isorce <julien.isorce at gmail.com>
>>>
>>>>
>>>> 2009/6/26 Phil Rendell <philrendell at gmail.com>
>>>>>
>>>>>
>>>>>  Sorry, no joy with this. Both complained about an erroneous pipeline.
>>>>> I don't think this could be the same error as before with feeding
>>>>> dshowvideosrc into ffmpegcolorspace, as if I remover the systemstream
>>>>> property, or set it to either true or false, gst-launch crashes. Setting it
>>>>> to anything else appears to cause the erroneous pipeline error.
>>>>>
>>>>>  D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
>>>>> "video/x-dv, systemstream=0" ! fakesink
>>>>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to fakesink0
>>>>> D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
>>>>> "video/x-dv, systemstream=1" ! fakesink
>>>>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to fakesink0
>>>>> D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
>>>>> "video/x-dv, systemstream=2" ! fakesink
>>>>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to fakesink0
>>>>> D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
>>>>> fakesink
>>>>> Setting pipeline to PAUSED ...
>>>>> <Crash>
>>>>> D:\Camera\Common\GStreamer\bin>
>>>>>
>>>>
>>>> I am not sure t follow you. You said "as if I remover the systemstream
>>>> property, or set it to either true or false"
>>>> but you got a link error with "video/x-dv, systemstream=1". Then a crash
>>>> ?
>>>>
>>>
>>> Sorry, I probably should have laid that out clearer. I actually executed
>>> 4 commands there - one for systemstream=0, one for systemstream=1, one for
>>> systemstream=2 and the other as before.
>>>
>>> If I do a gst-inspect on dshowvideosrc I can see that systemstream is set
>>> to true in one case and false in another. No matter what I set it to I
>>> always got a crash. However, now when I execute 'gst-launch dshowvideosrc !
>>> "video/x-dv, systemstream=true" ! fakesink' I get a lot of console output,
>>> which I assume means everything works fine. I'm really not sure what I'm
>>> doing differently now though.
>>>
>>>     D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc
>>>>> ! "video/x-dv, format=dvsd, width=640, height=480, framerate=10" ! fakesink
>>>>> Setting pipeline to PAUSED ...
>>>>> ** (gst-launch-0.10:2448): WARNING **: your desired video size is not
>>>>> valid : 640 mod 1244160 !=0
>>>>>
>>>>> ** (gst-launch-0.10:2448): WARNING **: your desired video size is not
>>>>> valid : 480 mod 1577311108 !=0
>>>>> <Crash>
>>>>>
>>>>
>>>> Could you try to add systemstream property as following:
>>>>
>>>> gst-launch-0.10.exe -v dshowvideosrc ! "video/x-dv, format=dvsd,
>>>> width=640, height=480, framerate=10, systemstream=1" ! fakesink
>>>> and
>>>> gst-launch-0.10.exe -v dshowvideosrc ! "video/x-dv, format=dvsd,
>>>> width=640, height=480, framerate=10, systemstream=0" ! fakesink
>>>>
>>>
>>> I think my attempts at experimenting are a little bit of a red herring.
>>> gst-launch crashes whenever I pass in the format argument. If  I run
>>> gst-launch without this property set I still get the warning about the
>>> desired video size being invalid and the same type of console output I
>>> experienced just setting the caps to "video/x-dv, systemstream=true":
>>>
>>> D:\Camera\Common\GStreamer\bin>gst-launch-0.10.exe -v dshowvideosrc !
>>> "video/x-dv, systemstream=true, width=640, height=480, framerate=10" !
>>> fakesink
>>> Setting pipeline to PAUSED ...
>>>
>>> ** (gst-launch-0.10:3556): WARNING **: your desired video size is not
>>> valid : 640 mod 1244160 !=0
>>>
>>> ** (gst-launch-0.10:3556): WARNING **: your desired video size is not
>>> valid : 480 mod 1577311108 !=0
>>>
>>> /GstPipeline:pipeline0/GstDshowVideoSrc:dshowvideosrc0.GstPad:src: caps =
>>> video/x-dv, systemstream=(boolean)true, width=(int)640, height=(int)480,
>>> framerate=(int)10
>>> Pipeline is live and does not need PREROLL ...
>>> Setting pipeline to PLAYING ...
>>> New clock: GstSystemClock
>>> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps =
>>> video/x-dv, systemstream=(boolean)true, width=(int)640, height=(int)480,
>>> framerate=(int)10
>>> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps =
>>> video/x-dv, systemstream=(boolean)true, width=(int)640, height=(int)480,
>>> framerate=(int)10
>>> /GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps =
>>> video/x-dv, systemstream=(boolean)true, width=(int)640, height=(int)480,
>>> framerate=(int)10
>>> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "preroll
>>> *******"
>>> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "event
>>> ******* E(type: 102, GstEventNewsegment, update=(boolean)false,
>>> rate=(double)1, applied-rate=(double)1, format=(GstFormat)GST_FORMAT_BYTES,
>>> start=(gint64)0, stop=(gint64)-1, position=(gint64)0;) 013379C0"
>>> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain
>>> ******* <(144000 bytes, timestamp: 0:00:00.078125000, duration:
>>> 0:00:00.040000000, offset: -1, offset_end: -1, flags: 32) 044D3320"
>>> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain
>>> ******* <(144000 bytes, timestamp: 0:00:00.125000000, duration:
>>> 0:00:00.040000000, offset: -1, offset_end: -1, flags: 0) 044D3378"
>>> ...
>>>
>>> Again, it doesn't appear to work when I set systemstream to 0, 1, or 2,
>>> only booleans.
>>>
>>> For some reason when I execute 'gst-launch dshowvideosrc ! "video/x-dv,
>>> systemstream=true, width=640, height=480, framerate=10" ! ffdec_dvvideo !
>>> directdrawsink' I get the link error saying that it cannot link
>>> dshowvideosrc0 to ffdec_dvvideo0. Could this be something to do with the
>>> format parameter being missing?
>>>
>>>
>>>>
>>>> The thing I know is that dshowvideosrc implementation goes in a wrong
>>>> way in case of "video/x-dv, systemstream=1".
>>>> I mean it uses FORMAT_VideoInfos fields while it should use
>>>> FORMAT_DvInfo fields.
>>>> Even if I have no dv camera I could try something but
>>>> first I really have to know if it's systemstream=0 or 1.
>>>>
>>> You probably don't need it now, but I've attached a screenshot of the
>>> filter dialog in graphedit, which might be able to tell you which
>>> systemstream is being used.
>>>
>>> Thanks,
>>>
>>> Phil
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>
>>>
>>
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>>
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