ffmpeg2webm 0.24 Usage: ffmpeg2webm [options] input General output options: -o, --output alternative output filename --no-skeleton disables ogg skeleton metadata output -s, --starttime start encoding at this time (in sec.) -e, --endtime end encoding at this time (in sec.) -p, --preset encode file with preset. Right now there is preview, pro and videobin. Run 'ffmpeg2webm -p info' for more informations Video output options: -v, --videoquality [0 to 10] encoding quality for video (default: 5) use higher values for better quality -V, --videobitrate [1 to 16778] encoding bitrate for video (kb/s) --optimize optimize video output filesize (slower) (same as speedlevel 0) --speedlevel [0 2] encoding is faster with higher values the cost is quality and bandwidth -x, --width scale to given width (in pixels) -y, --height scale to given height (in pixels) --max_size scale output frame to be withing box of given size (in pixels) --aspect define frame aspect ratio: i.e. 4:3 or 16:9 -F, --framerate output framerate e.g 25:2 or 16 --croptop, --cropbottom, --cropleft, --cropright crop input by given pixels before resizing -S, --sharpness [0 to 2] sharpness of images (default: 0). Note: lower values make the video sharper. -K, --keyint [1 to 65536] keyframe interval (default: 64) --no-upscaling only scale video or resample audio if input is bigger than provided parameters Video transfer options: --pp Video Postprocessing, denoise, deblock, deinterlacer use --pp help for a list of available filters. -C, --contrast [0.1 to 10.0] contrast correction (default: 1.0) Note: lower values make the video darker. -B, --brightness [-1.0 to 1.0] brightness correction (default: 0.0) Note: lower values make the video darker. -G, --gamma [0.1 to 10.0] gamma correction (default: 1.0) Note: lower values make the video darker. -Z, --saturation [0.1 to 10.0] saturation correction (default: 1.0) Note: lower values make the video grey. Audio output options: -a, --audioquality [-2 to 10] encoding quality for audio (default: 1) use higher values for better quality -A, --audiobitrate [32 to 500] encoding bitrate for audio (kb/s) -c, --channels set number of output channels -H, --samplerate set output samplerate (in Hz) --noaudio disable audio from input --novideo disable video from input Input options: --deinterlace force deinterlace, otherwise only material marked as interlaced will be deinterlaced -f, --format specify input format --inputfps fps override input fps --audiostream id by default the last audio stream is selected, use this to select another audio stream --sync use A/V sync from input container. Since this does not work with all input format you have to manually enable it if you have issues with A/V sync Metadata options: --artist Name of artist (director) --title Title --date Date --location Location --organization Name of organization (studio) --copyright Copyright --license License --contact Contact link Other options: --nice n set niceness to n -P, --pid fname write the process' id to a file -h, --help this message Examples: ffmpeg2webm videoclip.avi (will write output to videoclip.webm) ffmpeg2webm videoclip.avi --subtitles subtitles.srt (same, with subtitles) cat something.dv | ffmpeg2webm -f dv -o output.webm - Encode a series of images: ffmpeg2webm frame%06d.png -o output.webm Live streaming from V4L Device: ffmpeg2webm /dev/video0 -f video4linux --inputfps 15 -x 160 -y 128 -o - | oggfwd iccast2server 8000 password /webm.webm Live encoding from a DV camcorder (needs a fast machine): dvgrab - | ffmpeg2webm -f dv -x 352 -y 288 -o output.webm - Live encoding and streaming to icecast server: dvgrab --format raw - | ffmpeg2webm -f dv -x 160 -y 128 -o /dev/stdout - | oggfwd iccast2server 8000 password /webm.webm