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
  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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