Hi, I sent this message to the theora list but I'm not sure if it got through (activity seems to be very low, regardless). I'm hoping I have better luck here. I wrote a plugin to enable LiVES (a video editor) to encode theora/vorbis/ogg files. I'm looking for some advice towards improving quality. If someone would like to help me test this please note that you'll need MPlayer, ImageMagick, sox, the encoder_example from libtheora (somewhere in the PATH), and Python 2.3.0 (this is fairly all standard stuff). Consider the following clip: http://lives.reimeika.ca/cvs/swath.ogg As you can see there are a lot of obvious artifacts. I generate this movie using a series on PNG images and the following command sequence: mkfifo -m 0600 stream.yuv mplayer mf://*.png -mf type=png:fps=29.97002997 -vf dsize=16:9,hqdn3d -vo yuv4mpeg -ao null -nosound & encoder_example -s 8 -S 7 -f 30000 -F 1001 -v 10 -a 10 -o swath.ogg stream.yuv Any suggestions on how to improve this? In order to test I'm making available the LiVES video file (which is essentially a .tgz of the PNG images): http://lives.reimeika.ca/cvs/swath.lv1 To encode this you can download the LiVES theora encoder plugin: http://lives.reimeika.ca/cvs/theora_encoder.py and copy it into an empty directory (make sure it's executable). Move swath.lv1 into that same directory and run: ./theora_encoder.py -v -o swath.ogg -a 3 -t hi -L swath.lv1 This will create "swath.ogg". In order to see what the uncomporessed movie looks like you can run (in that directory): animate -delay 3.336 *.png Any tips on how to better the quality? I'm running MPlayer1.0pre6 and libtheora-1.0alpha4. Thanks for any input! Cheers, -- marco@reimeika.ca Gunnm: Broken Angel http://amv.reimeika.ca http://reimeika.ca/ http://photo.reimeika.ca