Provided by: ffmpeg2theora_0.29-2build1_amd64 bug

NAME

       ffmpeg2theora - command-line converter to create Ogg Theora and Ogg Vorbis files.

SYNOPSIS

       ffmpeg2theora [options] inputfile

DESCRIPTION

       This manual page documents briefly the ffmpeg2theora command.

       ffmpeg2theora  is  a  program  that  converts any media file that ffmpeg can decode to Ogg
       Theora for video and Ogg Vorbis for audio.

OPTIONS

       To read from standard input, specify `-' as the input filename.

       These programs follow the usual GNU command line syntax, with long options  starting  with
       two dashes (`-').  A summary of options is included below.

   General output options:
       -o, --output
              Specify  the  output  filename.  If no output filename is specified, output will be
              written to inputfile.ogv.  To output to standard output, specify /dev/stdout as the
              output file.

       --no-skeleton
              Disables Ogg Skeleton metadata output.

       --seek-index
              Enables keyframe index in skeleton track.

       -s, --starttime
              Start encoding at this time (in seconds).

       -e, --endtime
              End encoding at this time (in seconds).

       -p, --preset
              Encode  file  with v2v preset.  Right now, there is preview, pro and videobin.  Run
              “ffmpeg2theora -p info” for more information.

   Video output options:
       -v, --videoquality
              [0 to 10] Set encoding quality for video (default: 6).
                        use higher values for better quality

       -V, --videobitrate
              Set encoding bitrate for video (in kb/s).

       --soft-target
              Use a large reservoir and treat the rate as a soft target;  rate  control  is  less
              strict  but  resulting quality is usually higher/smoother overall. Soft target also
              allows an optional -v setting to specify a minimum allowed quality.

       --two-pass
              Compress input using two-pass rate control.  This option requires that the input to
              the to the encoder is seekable and performs both passes automatically.

       --first-pass <filename>
              Perform  first-pass  of  a  two-pass  rate controlled encoding, saving pass data to
              <filename> for a later second pass

       --second-pass <filename>
              Perform second-pass of a two-pass rate controlled encoding, reading first-pass data
              from  <filename>.   The  first pass data must come from a first encoding pass using
              identical input video to work properly.

       --optimize
              Optimize output Theora video, using a full search for motion vectors instead  of  a
              hierarchical  one.  This  can  reduce  video bitrate about 5%, but it is slower and
              therefore is disabled by default.

       --speedlevel
              encoding is faster with higher values the cost is quality and bandwidth (default 1)
              available  values depend on the version of libtheora check ffmpeg2theora --help for
              supported values.

       -x, --width
              Scale to given width (in pixels).

       -y, --height
              Scale to given height (in pixels).

       --aspect
              Define frame aspect ratio (e.g. 4:3, 16:9).

       --pixel-aspect
              Define pixel aspect ratio (e.g. 1:1, 4:3).

       -F, --framerate
              output framerate e.g 25:2 or 16

       --croptop, --cropbottom, --cropleft, --cropright
              Crop input by given pixels before resizing.

       -K, --keyint
              [8 to 2147483647] Set keyframe interval (default: 64).

       -d, --buf-delay
              Buffer delay (in frames). Longer delays allow smoother rate adaptation and  provide
              better overall quality, but require more client side buffering and add latency. The
              default value is the keyframe interval for one-pass encoding (or somewhat larger if
              --soft-target  is  used) and infinite for two-pass encoding. (only works in bitrate
              mode)

       --no-upscaling
              only scale video or resample audio if input is bigger than provided parameter

   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.

       -P, --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] Set encoding quality for audio (default: 1).
                         use higher values for better quality

       -A, --audiobitrate
              [32 to 500] Set encoding bitrate for audio (in kb/s).

       -c, --channels
              Set number of output channels.

       -H, --samplerate
              Set output samplerate (in Hz).

   Input options:
       --noaudio
              Disable audio from input.

       --novideo
              Disable video from input.

       --deinterlace
              Force   deinterlace.    Otherwise  only  material  marked  as  interlaced  will  be
              deinterlaced.

       --no-deinterlace
              Force deinterlace off.

       --vhook
              you can use ffmpeg's vhook system, example:
               ffmpeg2theora --vhook '/path/watermark.so -f wm.gif' input.dv

       -f, --format
              Specify input format.

       --inputfps
              Override input fps.

       --audiostream id
              By default the first audio stream is selected, use this  to  select  another  audio
              stream.

       --videostream id
              By  default  the  first  video 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 manualy enable it if you have issues with A/V sync.

   Subtitles options:
       --subtitles
              Encode  subtitles from the given file to a multiplexed Kate stream.  The input file
              should be in SubRip (.srt)  format,  encoded  in  UTF-8,  unless  the  --subtitles-
              encoding option is also given.

       --subtitles-encoding encoding
              Assumes  the  corresponding  subtitles  file  is  encoded in the given encoding. If
              ffmpeg2theora was built with iconv support, all encodings supported by iconv may be
              used.  Otherwise,  UTF-8  and ISO-8859-1 (aka latin1) are supported. The default is
              UTF-8.

       --subtitles-language language
              Sets the language of the corresponding subtitles stream. This will be  set  in  the
              corresponding Kate stream so a video player may make this available to the user for
              language selection. Language is an ISO 639-1  or  RFC  3066  ASCII  string  and  is
              limited to 15 characters.

       --subtitles-category category
              Sets  the  category  of the corresponding subtitles stream. This will be set in the
              corresponding Kate stream so a video player may make this available to the user for
              selection.  The  default  category  is  "subtitles". Suggested other categories may
              include "transcript", "commentary", "lyrics", etc. Category is an ASCII string  and
              is limited to 15 characters

       --subtitles-ignore-non-utf8
              When  reading  an  UTF-8  subtitles  text  file, any invalid UTF-8 sequence will be
              ignored. This may be useful if there are stray  sequences  in  an  otherwise  UTF-8
              file.  Note  that,  since  those invalid sequences will be removed from the output,
              this option is not a substitute to converting a non UTF-8 file to UTF-8.

       --nosubtitles
              Disables subtitles  from  input.   Note  that  subtitles  explicitely  loaded  from
              external files will still be used.

       --subtitle-types
              Selects  which  subtitle  types to include from the input file.  Allowed types are:
              none, all, text, spu (spu being the  image  based  subtitles  found  on  DVD).   By
              default,  only  text  based  subtitles  will  be  included.   Note  that  subtitles
              explicitely loaded from external files will still be used.

   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.

       --nometadata
              disables metadata from input

       --no-oshash
              do not include oshash of source file(SOURCE_OSHASH)

   Keyframe indexing options:
       --index-interval <n>
              set minimum distance between indexed keyframes to <n> ms (default: 2000)

       --theora-index-reserve <n>
              reserve <n> bytes for theora keyframe index

       --vorbis-index-reserve <n>
              reserve <n> bytes for vorbis keyframe index

       --kate-index-reserve <n>
              reserve <n> bytes for kate keyframe index

   Other options:
       --nice n
              Set niceness to n.

       -h, --help
              Output a help message.

       --info Output json info about input file, use -o to save json to file.

       --frontend
              print status information in json, one json dict per line

EXAMPLES

       Encode Videos:
         ffmpeg2theora videoclip.avi (will write output to videoclip.ogv)

         cat something.dv | ffmpeg2theora -f dv -o output.ogv -

       Encode a series of images:
         ffmpeg2theora frame%06d.png -o output.ogv

       Live streaming from V4L Device:
         ffmpeg2theora --no-skeleton /dev/video0 -f video4linux \
                       --inputfps 15 -x 160 -y 128 \
                       -o - | oggfwd icast2server 8000 password /theora.ogv

         (you might have to use video4linux2 depending on your hardware)

       Live encoding from a DV camcorder (needs a fast machine):
         dvgrab - | ffmpeg2theora -f dv -x 352 -y 288 -o output.ogv -0

       Live encoding and streaming to icecast server:
         dvgrab --format raw - \
         | ffmpeg2theora --no-skeleton -f dv -x 160 -y 128 -o /dev/stdout - \
         | oggfwd icast2server 8000 password /theora.ogv

AUTHOR

       ffmpeg2theora was written by jan gerber <j@v2v.cc>.

       This manual page was written by Hubert Chan <hubert@uhoreg.ca>,  for  the  Debian  project
       (but may be used by others).

                                           May 14, 2010                          FFMPEG2THEORA(1)