Hallo > It did not solve the problem. The bit rate of the generated video was > still unreasonably high. > > 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. > > 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 So you try to rencode the video. Can you please post the mpeg format, resolution and aspect ration the source has. And the output format you want.
> mpeg2enc -a 2 -b 3180 -g 15 -G 15 -s -R 2 \ > /homes4/thoth/drinky-crow/x.yuv \ > -o /homes4/thoth/drinky-crow/x.m2v I hope you know that you generate a fixed bitrate MPEG1 with a aspect ratio of 4:3 and a fixed gop size. Can you try to encode without the -R 2 option and see what happens. I haven't encoded a MPEG1 with that kind of parameters for a long time. > -rw-r--r-- 1 thoth thoth 1657828416 Mar 27 12:13 x.m2v > -rw-r--r-- 1 thoth thoth 6812375076 Mar 27 11:41 x.yuv That should differ more. Even for MPEG1. > Both files play in mplayer, but the .m2v doesn't have the correct aspect > ratio (-a 2 isn't being honored, and the > sequence_header.aspect_ratio_information contains a 12 instead). > > Since I started with a 15-minute recording, I calculate the x.m2v file > as averaging out to almost 15 Mbit/s. This seems inconsistent with the > -b 3180 argument to mpeg2enc. > > I can provide the 6G .yuv file to any brave soul willing to attempt to > reproduce my problem. I'm just not sure where I could host it. Does the yuv file look correct when you play it back with lavplay (cat x.yuv | yuvplay) ? auf hoffentlich bald, Berni the Chaos of Woodquarter Email: shadowl...@utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
