Blocks during high motion scenes

Hi, I tried to encode my Extended Edition of a famous movie(playtime 3h 45m) with GordianKnot and XviD-24062003-1 to a size of 1500MB including two vbr mp3 audio files. The result looks very good but during fast scenes blocks or noise appears. I tried to play the encoded movie with ffdshow and the normal Xvid direct show filter, but the blocks still appear. My Settings: codec: XviD-24062003-1 average bitrate: 754kBit/s resolution: Pal 16:9 720 x 576 resized and cropped to 544 x 224 1 Pass: quantization: h.263 VHQ: Wide Search max b-frames: 2 b-frames quantizer ratio: 150 b-frames quantizer offset: 75 b-frames treshhold: 40 (I read this value is good for low bitrate) chroma motion on quaterpel on choma optimizer on 2 Pass: same settings quantizer restrictions default Before encoding I reseted Xvid to default settings! I did several encodings and changed the b-frame treshhold and the amount of b-frames, but the blocks always appeared. Please help :)

Some things I tried to avoid blocks esp. during high motion scenes: - for 2pass 2nd pass try lower values for max. overflow improvement/degradation, but be aware that this might lead to unpredictable filesize - try mpeg matrix. I know that h.263 is recommended for low bitrates, but even with 1pass @ quant. 2 and default settings, h.263 produces blocking artifacts (Dreamworks trailer, panning through the clouds) - try newer version of XviD Hope this helps

definatley try a new version of XviD... RC1 / Beta3 are vastly superior to the old dev-api 3 builds IMHO. ~misfit

I will try your suggestions. Thanx for your help.