<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Thanks to Mark for his wonderful gentrans plugin, I have declared success! You can read all about it at: <a class="moz-txt-link-freetext" href="http://www.buberel.org/serendipity/">http://www.buberel.org/serendipity/</a> The short version is that I now have a working gstreamer-based command that will capture very high quality video (high resolution, very few compression artifacts) and audio with near perfect audio/video sync using Theora/Vorbis/Ogg encoding. The resulting output can then be uploaded DIRECTLY to YouTube and plays back flawlessly. All of this using nothing more than a cheap USB webcam on Ubuntu. -Jason Mark Nauwelaerts wrote: <blockquote cite="mid:47CDCCFD.1050100@skynet.be" type="cite"> <pre wrap="">Well, I know :) , "stamp" never has been. That is, it is not part of a usual distro GStreamer installation (involving core, gst-plugins-good, etc). However, it is part of the gst-entrans collection also found at the given sourceforge URL (which would then require download, compiling, etc). You might do a temporary proof-of-concept (sort of) test instead that forces a copy using: - efence; pretty abusive and hits memory a bit - a combination of 2 x videocrop (adding and dropping a mock border) - some other creative combination ... However, neither of these has any of stamp's "fancy sync features" (if that's what you refer to), which is why it was made ... Regards, Mark. Jason L. Buberel wrote: </pre> <blockquote type="cite"> <pre wrap="">Ack - that feels SOO CLOSE to what I need. Unfortunately, the element being discussed - 'stamp' - no longer appears to be part of gstreamer v0.10: WARNING: erroneous pipeline: no element "stamp" And sure enough 'gst-inspect' does not include any reference to a 'stamp' element either. I shall keep digging! -jason Mark Nauwelaerts wrote: </pre> <blockquote type="cite"> <pre wrap="">This could be another example of what is mentioned in the Note at the end of section <a class="moz-txt-link-freetext" href="http://gentrans.sourceforge.net/docs/head/manual/html/howto.html#sect-recording">http://gentrans.sourceforge.net/docs/head/manual/html/howto.html#sect-recording</a> (observe that introducing a queue actually entails a "separate thread", as it is mentioned in this context). In itself, that may not provide more of an explanation :-(, but may give some ideas/inspiration to variations/alternatives. Regards, Mark. Jason L. Buberel wrote: </pre> <blockquote type="cite"> <pre wrap="">Oddly enough, that makes things worse :( Here is what I have confirmed - the following command will result in a VERY clear high quality audio-only recording on my configuration: </pre> <blockquote type="cite"> <pre wrap="">gst-launch-0.10 alsasrc device="hw:1,0" ! </pre> </blockquote> <pre wrap="">audio/x-raw-int,rate=16000,channels=1,depth=16 ! audioconvert ! vorbisenc ! oggmux ! filesink location=audio-only.ogg Which you can hear: <a class="moz-txt-link-freetext" href="http://www.buberel.org/audio-only.ogg">http://www.buberel.org/audio-only.ogg</a> But when I use Nei's command below, which has essentially the same audio parameters but with the additional 'queue' element to record audio and video, I see many of the following error messages: WARNING: from element /pipeline0/alsasrc0: Can't record audio fast enough Additional debug info: gstbaseaudiosrc.c(603): gst_base_audio_src_create (): /pipeline0/alsasrc0: dropped 13600 samples WARNING: from element /pipeline0/alsasrc0: Can't record audio fast enough Additional debug info: gstbaseaudiosrc.c(603): gst_base_audio_src_create (): /pipeline0/alsasrc0: dropped 12000 samples WARNING: from element /pipeline0/alsasrc0: Can't record audio fast enough Additional debug info: I am going to work on an ascii-art diagram of this pipeline in the hopes that it will help others see the mistake I am making. -jason Nie Jun wrote: </pre> <blockquote type="cite"> <pre wrap="">gst-launch-0.10 v4l2src ! queue ! videorate ! video/x-raw-yuv,width=800,height=600,framerate=15/1 ! ffmpegcolorspace ! theoraenc ! queue ! oggmux name=mux alsasrc device="hw:1,0" ! audiorate ! audio/x-raw-int,rate=16000,channels=1,depth=16 ! queue ! audioconvert ! vorbisenc ! QUEUE ! mux. mux. ! queue ! filesink sync=true location=test.ogg hope it helps you. </pre> </blockquote> <pre wrap="">------------------------------------------------------------------------ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. 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Microsoft(R) Visual Studio 2008. <a class="moz-txt-link-freetext" href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</a> ------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list <a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a class="moz-txt-link-freetext" href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </pre> </blockquote> </blockquote> </body> </html>