Huffyuv encoding problems
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Hi List,
I'm having trouble getting valid encodes from the ffenc_huffyuv plugin for one of my two encoding devices. The two devices are a Hauppauge PVR 500 card (which works fine) and an Epiphan VGA2USB capture device (which does not). The pipeline I'm using for the Epiphan card is the following: sudo gst-launch -e v4lsrc device=/dev/video2 ! ffmpegcolospace ! ffenc_huffyuv ! avimux ! filesink location=test.avi which generates a file like http://aries.usask.ca/test.avi. Note that I've been having trouble getting the files to play on linux, but the latest version of VLC on windows works. If you can't see the contents of that video it's looks like the bottom 1/3 of the video is pieces (~20 pixels high) of the top 2/3 repeated and color shifted. The odd thing is the other encoders (x264enc, ffenc_mpeg2video) work fine with this device - it's just the Huffyuv plugins. Does anyone know what's causing this? Or better yet, how to go about fixing it? Thanks, G ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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2009/8/20 Greg Logan <[hidden email]> Hi List, Hi, I can see that the resolution is 1024*768 So try to increase buffer size: ffenc_huffyuv buffer-size=2000000 (default is 524288 using gst-inspect-0.10 ffenc_huffyuv) Note that normally, using ffenc_ljpeg the result file has a smaller size. (then use ffedc_ljpeg to decode)
------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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Julien Isorce wrote:
> 2009/8/20 Greg Logan <[hidden email]> > >> Hi List, >> [...] >> If you can't see the contents of that video it's looks like the bottom >> 1/3 of the video is pieces (~20 pixels high) of the top 2/3 repeated and >> color shifted. The odd thing is the other encoders (x264enc, >> ffenc_mpeg2video) work fine with this device - it's just the Huffyuv >> plugins. >> >> Does anyone know what's causing this? Or better yet, how to go about >> fixing it? > > > Hi, > > I can see that the resolution is 1024*768 > > So try to increase buffer size: > > ffenc_huffyuv buffer-size=2000000 Ah, that works. Thanks! How would I go about calculating that value for a given resolution? In theory we will be capturing significantly larger desktops in the future. > (default is 524288 using gst-inspect-0.10 ffenc_huffyuv) > > Note that normally, using ffenc_ljpeg the result file has a smaller size. > (then use ffedc_ljpeg to decode) Thanks for the suggestion, I'll look into it :) G > >> Thanks, >> G >> >> >> ------------------------------------------------------------------------------ >> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day >> trial. Simplify your report design, integration and deployment - and focus >> on >> what you do best, core application coding. Discover what's new with >> Crystal Reports now. http://p.sf.net/sfu/bobj-july >> _______________________________________________ >> gstreamer-devel mailing list >> [hidden email] >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel >> > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > > > ------------------------------------------------------------------------ > > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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