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  1. Member
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    I am trying to convert H264 movies to FLV format using ffmpegX. When I convert the same movie as an MPEG4 to FLV it works fine. But the conversion from H264 completes instantly and produces a zero kb file.

    Any ideas? Thanks!
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  2. Explorer Case's Avatar
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    Click the blue "i" in the ffmpegX Progress window. Check if the last line in the log reads "Codec type mismatch for mapping". If so, check post #1510792 for a solution.
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    Thanks! That info in the second post did the trick. Now onto trolling through the forum for optimal FLV encode settings....
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  4. Member
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    I am getting the same problem - instant conversion with a 0kb file

    From the info link I get this error

    FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
    Fri Apr 13 16:12:39 WEST 2007
    Mac OSX universal build for ffmpegX
    libavutil version: 49.0.0
    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/gtchild/Desktop/flower2.mov':
    Duration: 00:04:54.3, start: 0.000000, bitrate: 97 kb/s
    Stream #0.0(eng), 12.02 fps(r): Video: h264, yuv420p, 320x240
    Number of stream maps must match number of output streams

    Can anyone help
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  5. Explorer Case's Avatar
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    Originally Posted by garychild
    Number of stream maps must match number of output streams
    Your type of conversion expects a video+audio input, but it seems your source file only has video?
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  6. Member
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    Yes this is true, there is only video - I will try a file that has audio too.

    in the meantime - how would I change the settings to change a video only file - it is a silent animation.

    Thanks for your reply
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  7. Explorer Case's Avatar
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    Originally Posted by garychild
    in the meantime - how would I change the settings to change a video only file - it is a silent animation.
    If you have QuickTime Pro, you could add a 00:04:54.3 silent audio track to your video-only file, save it and convert that.
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