[Selur]

@LigH: adding '-frames 429'

"I:\Hybrid\64bit\ffmpeg.exe" -y -loglevel fatal -i "F:\TestClips&Co\files\test.avi" -map 0:0 -an -sn -pix_fmt yuv420p -f rawvideo - | "I:\Hybrid\64bit\xvid_encraw.exe" -cq 3 -w 640 -h 352 -csp i420 -frames 429 -framerate 25 -o "E:\Temp\test.m4v"
xvid_encraw - raw mpeg4 bitstream encoder written by Christoph Lampert

xvidcore build version: xvid-1.3.7
Bitstream version: 1.3.7
Detected CPU flags: ASM MMX MMXEXT SSE SSE2 SSE3 SSE41 TSC
Detected 16 cpus, using 16 threads.
   -1: key=0, time=      0, len=      -5 | type=I, quant=  0, len=       0

Tot: enctime(ms) =   0.00,               length(bytes) =       0
Avg: enctime(ms) =  -1.00, fps =-1000.00, length(bytes)

doesn't help either. :/

@ChaosKing: yuv4mpegpipe doesn't work either and I agree with LigH doesn't seem like there's code to parse y4m headers.