On 6/21/2010 10:09 AM, Giorgio wrote: > 2010/6/21 Rolf Ernst<rolf.ernst at silverlightning.org>: > >> I am trying to use mencoder in my little GUI to create VP8 encoded filtes. >> From what I see that support is not natively working (yet?). Anyhow, there >> are patches but I don't seem to be able to apply come of them. Decoder >> support appears to be there. >> >> So I am trying to pipe the output into ivfenc via something like this (this >> is Nic's modified version accepting pipes). >> >> mencoder -dvd-device "D:\ElephantsDream\VIDEO_TS" dvd://1 -ovc raw -noskip >> -vc mpeg12 -vf scale,format=i420 -forcedsubsonly -nosound -mc 0 -lavdopts >> threads=8 -really-quiet -fps 25 -aspect 1.7775:1 -of rawvideo -o - \ >> | ivfenc --passes=1 --pass=1 --target-bitrate=1500 --width=720 --height=576 >> --timebase=1/25 --i420 - "D:\Encoding Temp\Title_1_1-8.vp8" >> >> Ivfenc complains that the output is not in Y4M format. I have to claim utter >> ignorance here but I am told that -of rawvideo does not produce a y4m >> skeleton whatever that is. >> >> Do you know how to talk it into this? >> > I'm not sure this can help you with what you want to do, but have you > tried something like this?: > > $ mkfifo -m 660 stream_fifo.yuv > $ mplayer -vo yuv4mpeg:file=stream_fifo.yuv -nosound -benchmark<inputfile> > > and now, on a second terminal: > > $ ivfenc<options> stream_fifo.yuv outfile.vp8 > > Regards, > > Giorgio Vazzana > That would be nice if named pipes worked on Windows ;-)
