On 31/03/2009, at 6:51 AM, Bob Forsman wrote: > (I am not sure if I am properly subscribed to this list yet. I have > not > received a confirmation email).
I've CCd you, so you'll know if you receive 2 email. Sorry I can't help with the bitrate problem, but may be able to provide some tools to help with debugging. > > With help from the gstreamer IRC channel I was able to write a YUV > file > so I could test with the mpeg2enc command stand-alone. There are a number of tools that write yuv format files eg FFmpeg and mplayer. I've even written a tool based on the libavcodec libraries, which sole purpose is to produce a YUV stream. (http://silicontrip.net/~mark/lavtools/#libav2yuv) > > gst-launch-0.10 -v filesrc location=/var/tmp/The\ Drinky\ Crow\ Show > \ -\ Tunnel\ Girls.mpeg ! decodebin name=db ! queue ! videoscale ! > video/x-raw-yuv, width=352, height=480, pixel-aspect- > ratio=1920/1056 ! y4menc ! filesink location=/homes4/thoth/drinky- > crow/x.yuv db.! fakesink silent=true ffmpeg -i The\ Drinky\ Crow\ Show\ -\ Tunnel\ Girls.mpeg -f yuv4mpegpipe x.yuv mplayer -vo yuv4mpeg The\ Drinky\ Crow\ Show\ -\ Tunnel\ Girls.mpeg writes to stream.yuv > As for what I used to produce graphs of bit rate, I have an in-house > tool I wrote. Unfortunately it only works on single-stream PES > streams > at the moment, so I would have to make some changes to have it graph a > .m2v file that has not been through my PES wrapper gstreamer plugin. I've also written a tool based on the libavcodec libraries which produce a text file suitable for graphing in GNUPlot or Octave, of any video file readable by libav. http://silicontrip.net/~mark/lavtools/#libav-bitrate Hope this can help. Mark ------------------------------------------------------------------------------ _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
