Transcode prep help

Kazakore
2012-04-13
2012-09-15
  • Kazakore
    Kazakore
    2012-04-13

    Running Fedora Fc16 and have managed to get LiVES installed from Koji Russian
    Fedora rpm linked on your Download page after finding all the dependencies it
    asks for. :)

    Downloaded a few clips from Archive.org and have been trying to prepare them
    for use. As I have a low powered netbook (idea is to see if anything is even
    possible on this) which I hope to be able to at least basic VJ stuff I wanted
    to transcode everything to the correct size etc before importing, including
    transcoding to mjpeg.

    Transcoding to Null appears to work with:

    $ transcode -i CEP140.mpg -o CEP140-800x600mjpg.mov -Z 800x600 -F mjpeg
    --export_fps 0,13 -y null

    (Note -y does not need to be specified here as null is the default.)

    I can also export each fame as its own jpg file by using "-y jpg" but this
    isn't any more useful. All others I have tried say they do not recognise the
    mjpeg as codec.

    Transcode export plugins:

    $ ls -l $(tcmodinfo -p)/export*.so

    -rwxr-xr-x. 1 root root 5436 Nov 19 19:26 /usr/lib/transcode/export_ac3.so
    -rwxr-xr-x. 1 root root 34528 Nov 19 19:26 /usr/lib/transcode/export_divx5.so
    -rwxr-xr-x. 1 root root 9636 Nov 19 19:26 /usr/lib/transcode/export_dvraw.so
    -rwxr-xr-x. 1 root root 22172 Nov 19 19:26 /usr/lib/transcode/export_dv.so
    -rwxr-xr-x. 1 root root 58416 Nov 19 19:26 /usr/lib/transcode/export_ffmpeg.so
    -rwxr-xr-x. 1 root root 9624 Nov 19 19:27 /usr/lib/transcode/export_im.so
    -rwxr-xr-x. 1 root root 9624 Nov 19 19:26 /usr/lib/transcode/export_jpg.so
    -rwxr-xr-x. 1 root root 9536 Nov 19 19:26 /usr/lib/transcode/export_lame.so
    -rwxr-xr-x. 1 root root 22144 Nov 19 19:26 /usr/lib/transcode/export_lzo.so
    -rwxr-xr-x. 1 root root 17956 Nov 19 19:26 /usr/lib/transcode/export_mov.so
    -rwxr-xr-x. 1 root root 9560 Nov 19 19:26 /usr/lib/transcode/export_mp2enc.so
    -rwxr-xr-x. 1 root root 9548 Nov 19 19:26 /usr/lib/transcode/export_mp2.so
    -rwxr-xr-x. 1 root root 13740 Nov 19 19:26 /usr/lib/transcode/export_mpeg2enc.so
    -rwxr-xr-x. 1 root root 5404 Nov 19 19:26 /usr/lib/transcode/export_null.so
    -rwxr-xr-x. 1 root root 9540 Nov 19 19:26 /usr/lib/transcode/export_ogg.so
    -rwxr-xr-x. 1 root root 9600 Nov 19 19:26 /usr/lib/transcode/export_pcm.so
    -rwxr-xr-x. 1 root root 22124 Nov 19 19:26 /usr/lib/transcode/export_ppm.so
    -rwxr-xr-x. 1 root root 32796 Nov 19 19:26 /usr/lib/transcode/export_pvm.so
    -rwxr-xr-x. 1 root root 9544 Nov 19 19:26 /usr/lib/transcode/export_pvn.so
    -rwxr-xr-x. 1 root root 26272 Nov 19 19:26 /usr/lib/transcode/export_raw.so
    -rwxr-xr-x. 1 root root 18016 Nov 19 19:26 /usr/lib/transcode/export_tcaud.so
    -rwxr-xr-x. 1 root root 5440 Nov 19 19:26 /usr/lib/transcode/export_toolame.so
    -rwxr-xr-x. 1 root root 5436 Nov 19 19:27 /usr/lib/transcode/export_wav.so
    -rwxr-xr-x. 1 root root 34488 Nov 19 19:27 /usr/lib/transcode/export_xvid4.so
    lrwxrwxrwx. 1 root root 15 Apr 13 12:53 /usr/lib/transcode/export_xvid.so ->
    export_xvid4.so

    -rwxr-xr-x. 1 root root 22188 Nov 19 19:26 /usr/lib/transcode/export_yuv4mpeg.so

    And proof mjpeg-tools is installed:

    $ yum list instaled mj

    Loaded plugins: langpacks, presto, refresh-packagekit

    Installed Packages

    mjpegtools.i686 2.0.0-1.fc16 @rpmfusion-free

    mjpegtools-devel.i686 2.0.0-1.fc16 @rpmfusion-free

    mjpegtools-gui.i686 2.0.0-1.fc16 @rpmfusion-free

    mjpegtools-lav.i686 2.0.0-1.fc16 @rpmfusion-free

    mjpegtools-libs.i686 2.0.0-1.fc16 @rpmfusion-free

    Also I want video only, no audio. What would I use for that? Would it still be
    with the -y parameter, so (assuming we find a encoder called mjpeg) it would
    be "-y mjpeg, null" to encode video and null/discard the audio?

    Sorry, I know this isn't directly related to LiVES but hoped this was a good
    place to ask. Might cross-post it on the Fedora forum as it has more traffic
    though. Still a reply may help others in the future :)

     
  • Kazakore
    Kazakore
    2012-04-16

    Well never succeeded with transcode but managed to get success with ffmpeg and
    created a small bash file to process a full directory and process into a batch
    location and that is good enough for me :-)

    Although it seems it may of been less worthwhile than I originally thought as
    opening files for the firs time still takes ages! Possibly due to internal
    filetype being set to png but I can see how this might be advantageous to me
    in the future, especially when using still with an alpha channel, so will
    leave it. Still good to get the clips to a standardised size and framerate
    before starting with a project .