Friends,
I wish to be able to play a file with ffplay but have it play at 1/2 the real size with -x NUM -y NUM I can control play size with ffplay -x 640 -y 360 -i dog.avi this works as hoped but what I would really like to do is do some math on the file and scale it down with something like ffplay -vf=scale=iw/2:ih/2 -i /media/data/zzz-s/NASA_logo.mov my Goal is to have a means of scaling down 1080p to a size that fits nicely on my vga ffplay -vf=scale=iw/2:ih/2 -i /media/data/zzz-s/NASA_logo.mov ffplay version git-2013-10-16-586b8ea Copyright (c) 2003-2013 the FFmpeg developers built on Oct 16 2013 13:38:00 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --prefix=/home/j/ffmpeg_build --extra-cflags=-I/home/j/ffmpeg_build/include --extra-ldflags=-L/home/j/ffmpeg_build/lib --bindir=/home/j/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-libx264 --enable-nonfree --enable-x11grab libavutil 52. 46.101 / 52. 46.101 libavcodec 55. 37.100 / 55. 37.100 libavformat 55. 19.102 / 55. 19.102 libavdevice 55. 4.100 / 55. 4.100 libavfilter 3. 88.101 / 3. 88.101 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.103 / 0. 17.103 libpostproc 52. 3.100 / 52. 3.100 Failed to set value '-i' for option 'vf=scale=iw/2:ih/2': Option not found with video_size ffplay -video_size 320x240-i /media/data/zzz-s/NASA_logo.mov ffplay version git-2013-10-16-586b8ea Copyright (c) 2003-2013 the FFmpeg developers built on Oct 16 2013 13:38:00 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --prefix=/home/j/ffmpeg_build --extra-cflags=-I/home/j/ffmpeg_build/include --extra-ldflags=-L/home/j/ffmpeg_build/lib --bindir=/home/j/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-libx264 --enable-nonfree --enable-x11grab libavutil 52. 46.101 / 52. 46.101 libavcodec 55. 37.100 / 55. 37.100 libavformat 55. 19.102 / 55. 19.102 libavdevice 55. 4.100 / 55. 4.100 libavfilter 3. 88.101 / 3. 88.101 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.103 / 0. 17.103 libpostproc 52. 3.100 / 52. 3.100 Option video_size not found.aq= 0KB vq= 0KB sq= 0B f=0/0 Thanks jim S _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user