encodedv



ENCODE(1)                                                            ENCODE(1)




NAME

       encodedv - encode a series of images to a digital video stream


SYNOPSIS

       encodedv [ options ] video_pattern [ audio_input ]


DESCRIPTION

       encodedv  takes  a series of images in PPM/PGM/video format and option-
       ally an audio stream and compiles them into a DV-encoded video  stream.
       pattern  specifies  where the input data is located and may be either -
       for stdin, or a printf-style pattern taking one numeric  argument  that
       gets  replaced  by the current frame number.  Like image%03d.ppm, which
       gets expanded to image000.ppm, image001.ppm, etc.

       --version
              show encodedv version number.

       -s, --start-frame=count
              start encoding at frame number count (defaults to 0).

       -e, --end-frame=count
              end encoding at frame number count (defaults to unlimited).

       -l, --wrong-interlace
              flip lines to compensate for  wrong  interlacing  in  the  input
              data. Happened with mpeg2dec generated data.

       -p, --vlc-passes
              vlc code distribution passes (1-3) greater values = better qual-
              ity but not necessarily slower encoding! This defaults for  best
              quality = 3.

       -v, --verbose
              show encoder statistics / status information

       -i, --input=filter-name
              Choose  input-filter:  [>ppm<,  pgm,  video] The ppm-filter only
              supports raw rgb ppm files.  The pgm file format is the one gen-
              erated by mpeg2dec of the livid project. ( http://linuxvideo.org
              ) This means: Y-data appended by U and V data which  are  scaled
              down  by 2 and placed side by side. This option defaults to PPM.
              Some things you want to keep in mind:

              1) If you want to stream video  frames  (using  video_pattern  =
              "-")  you have to make sure that there is no trailing garbage at
              the end of the pictures. This is ignored by most image manipula-
              tion programs!

              2)  If you are one of the poor persons with a buggy PCI bus-mas-
              tering board be sure to have a backup handy if you want  to  use
              video  support.  Some  versions  of the VIA board chipsets crash
              your machine and even your harddisk. Since  encodedv  uses  full
              resolution  capturing  it  is  more likely to trigger these bugs
              than other programs. If you have a VIA board you definitely want
              to upgrade to Linux 2.4.3 or higher.

              3)  The  encoded  pictures  must have the correct resolution. If
              they don’t, you may want to try ppmqscale. The used video format
              is chosen by picture resolution. Use 720x576 for PAL and 720x480
              for NTSC.

              4) If you want to speed up things  a  little  bit  and  you  are
              generating  the input pictures automatically you may want to try
              pgm’s instead of ppm’s since they are encoded  somewhat  faster.
              But  keep  in mind, that this pgm format is only optimal for PAL
              since NTSC averages the U and V values somewhat differently.

       -a, --audio-input=filter-name
              Choose audio-input-filter: [>none<, wav, dsp]

       -o, --output=filter-name
              Choose output-filter: [>raw<]

       -q, --static-qno=table-no
              Static qno tables for quantisation on 2 VLC passes.   For  turbo
              (but  somewhat lossy encoding) try -q [1,2] -p [2,3].  There are
              only two static qno tables registered right now:

              1 : for sharp DV pictures

              2 : for somewhat noisy satelite television signal

              If you want to add some more, go ahead ;-)

       -f, --fps=fps-number
              Set frames per second (default: use all frames)

       -d, --force-dct=dct-mode
              Force dct mode (88 or 248) for whole picture

       Help Options

       -?, --help
              Show help message.

       --usage
              Display brief usage message.


SEE ALSO

       playdv(1),dvconnect(1),dubdv(1),encodedv(1).


AVAILABILITY

       See http://libdv.sourceforge.net/ for the latest version.


AUTHORS

       encodedv was written by James Bowman  <jamesb@excamera.com>  and  Peter
       Schlaile <udbz@rz.uni-karlsruhe.de>.

       This manual page is based on encodedv’s help message and was written by
       Daniel Kobras <kobras@debian.org> for the Debian GNU/Linux system  (but
       may  be used by others). It was updated by Peter Schlaile <udbz@rz.uni-
       karlsruhe.de>.




                                  April 2001                         ENCODE(1)

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