OGV to MKV conversion

Discussion in 'Apple TV and Home Theater' started by stuarthatto, Jun 30, 2009.

  1. macrumors regular

    Nov 5, 2008

    Any recommendations on how to convert/transcode OGV to MKV format?

  2. macrumors 68020


    Feb 8, 2008
  3. thread starter macrumors regular

    Nov 5, 2008
    Thanks for that, my apologies though I didn't mean ogg to mkv, I meant ogg to M4V

    My fault sorry,
  4. macrumors 6502

    Sep 5, 2003
    Christchurch, New Zealand
    Have you tried HandBrake?
  5. macrumors 6502a

    Dec 30, 2008
    Nottingham, UK
    If your on a Windows platform I`d try MediaCoder, one of the best free transcoders I`ve used.
  6. thread starter macrumors regular

    Nov 5, 2008
    I did try Handbrake but it just came up with a message 'no valid source found'

    These were desktop video captures taken on Ubuntu 9.04 using gtk-recordMyDesktop

    Handbrake certainly seems to recognise it:

    [15:18:19] scan: 10 previews, 1680x1040, 15.000 fps, autocrop = 0/0/0/0, aspect 1.62:1, PAR 1:1
    [15:18:19] Title is likely interlaced or telecined (10 out of 10 previews). You should do something about that.
    [15:18:19] scan: ignoring title 1, no audio tracks found
    [15:18:19] libhb: scan thread found 0 valid title(s)
    [15:18:20] macgui: ScanDone state received from fHandle
    [15:20:47] macgui: trying to open video_ts folder (parent directory chosen)
    [15:20:47] hb_scan: path=/Users/stuart/Desktop/WindowsXPSp2IE7MS09_002.ogv, title_index=0
    [15:20:47] scan: trying to open with libdvdread
    [15:20:47] dvd: not a dvd - trying as a stream/file instead
    [theora @ 0x1089600]560 bits left in packet 81
    [theora @ 0x1089600]7 bits left in packet 82
    Input #0, ogg, from '/Users/stuart/Desktop/WindowsXPSp2IE7MS09_002.ogv':
    Duration: 00:05:23.26, start: 0.000000, bitrate: 918 kb/s
    Stream #0.0: Invalid Codec type -1
    Stream #0.1: Video: theora, yuv420p, 1680x1040, 15.00 tb(r)

    But then I get this message repeated a few hundred times...

    [theora @ 0x1089600]vp3: first frame not a keyframe

    This ogg file plays perfectly in VLC.

    Windows??? :eek:
  7. macrumors 6502a

    Dec 30, 2008
    Nottingham, UK
    While handbrake might recognise the container, it does not recognise the theora codec as the bottom 2 log lines tell you.

    Well if it plays fine in VLC, then why not use VLC to transcode it?

    A 2 second yahoo search revealed this:-

    YouTube - Transcoding from OGG into MP4 using VLC Media Player

    I`m sure if you look you`ll find more.
  8. macrumors 68020

    Mar 27, 2003
    you might want to try the developer snapshot of HB (assuming you are using 0.9.3). It uses a newer version of ffmpeg for decoding among other things, so it might work on you're file.

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