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  1. Member
    Join Date
    Jan 2008
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    importing a quicktime file that was exported from FCP using h.264. I'm trying to export to flash. I press encode and i get a ding, a file, but zero kb in size. Any suggestions? Heres the codes i get:

    FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
    Mac OSX universal build for ffmpegX
    libavutil version: 49.0.0
    Tue Jan 8 10:45:12 EST 2008
    libavcodec version: 51.9.0
    libavformat version: 50.4.0
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5597b8]negative ctts, ignoring
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Taylor/Desktop/BM_quicktime_large.mov':
    Duration: 00:02:26.2, start: 0.000000, bitrate: 1131 kb/s
    Stream #0.0(eng): Audio: aac, 44100 Hz, stereo
    Stream #0.1(eng), 29.97 fps(r): Video: h264, yuv420p, 640x360
    Codec type mismatch for mapping #0.0 -> #0.0



    Thanks in advance!

  2. Member
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    Jan 2008
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    United States
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    OK i have answered my own question!

    If you click on Invert mapping which is under the audio tab. It fixes the issue!! I can export to flv!

    But i have a new problem.

    When it exports it only exports 10-13 seconds of footage and the footage is missing a lot of frames. Its very very choppy. any suggsetions people?

  3. Explorer Case's Avatar
    Join Date
    Feb 2004
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    Middle Earth
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    Originally Posted by johntay555
    When it exports it only exports 10-13 seconds of footage and the footage is missing a lot of frames. Its very very choppy. any suggsetions people?
    I don't know about "only 10-13 seconds", but the missing frames
    seems to be related to ffmpeg's stream mapping.
    For conversions without inverted mapping, the output is smooth,
    but whenever the mapping is inverted, you'll see the stuttering
    like it is only doing 2 frames per second.

  4. I had the zero KB issue as well converting a .mov to .flv, and I think I've narrowed it down either to using an exported self-contained movie from Final Cut Pro rather than exporting it to a quicktime, or from not having and using the flv progress bar plugin that's now available on the ffmpegx site. I'm still getting out-of-sync audio and video, with only about half the video encoded, but that's another thread.




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