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  1. Member
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    Nov 2006
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    I have several FLV files to convert. However, when I convert some of them into MP4's, although the FLV is perfect, once it is converted, the MP4 is completely out of sync, the music way behind the video.

    Which software and method can I use to ensure that my videos convert from FLV to MP4 perfectly?

    Thanks.
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  2. Mod Neophyte redwudz's Avatar
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    Sep 2002
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    You didn't say what software you are presently using for converting.

    Try SUPER, it works well for most FLV files. If not, someone else may have better suggestions.

    And welcome to our forums.
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  3. Member
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    Thanks for the Welcome!

    Tried Super - no luck - and tried loads of others - could it be the settings on the software?
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  4. VH Wanderer Ai Haibara's Avatar
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    SUPER currently only handles the default FLV codec in FLV videos - in other words, no VP6(2), etc.

    However, if you're able to convert the videos with SUPER, but are experiencing sync problems, you have to make sure that you select the same frame rate for the output video as the original FLV. I'm not sure if that'll apply to other converters...

    Also, I think you can try FLV Extract, but you'll need to have the relevant decoders to view the resulting AVIs. I haven't tried it, myself.
    If cameras add ten pounds, why would people want to eat them?
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  5. search "flv to video converter" with google. then you will get the solution.
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  6. Member
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    Oct 2005
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    Lima, Peru
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    FLV Extract should work fine, as long as you have the necessary codecs. They are mentioned in the description page for FLV Extract here, so it shouldn't be much of a problem.
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  7. I'm a MEGA Super Moderator Baldrick's Avatar
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    Aug 2000
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    Total Video Converter worked fine with most flvs I have tried.

    Or latet ffdshow and flv splitter and it should work to open with directshow capabable converters.
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  8. Member GTRBudda's Avatar
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    Jul 2005
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    FFMpeg works for me. Copy and paste this to a batch file:

    "C:\PROGRAM FILES\GUI4FFMPEG\ffmpeg.exe" -i "C:\Path\to\file.flv" -hq -vcodec mpeg4 -g 300 -b 900 -aspect 4:3 -s 320x240 -acodec mp3 -ab 128 -ac 2 -mbd 2 -vtag xvid -qmin 2 -async 1 -y "C:\path\to\newfile.avi"

    for mp3 audio, or this:

    "C:\PROGRAM FILES\GUI4FFMPEG\ffmpeg.exe" -i "c:\path\to\file.flv" -hq -vcodec mpeg4 -g 300 -b 900 -aspect 4:3 -s 320x240 -acodec pcm_s16le -ab 900 -ar 44100 -ac 2 -mbd 2 -vtag xvid -qmin 2 -async 1 -y "c:\path\to\newfile.avi"

    for wav audio. Replace "Path\to\file.flv" and "path\to\newfile.avi" with your own path and file.
    Gui4FFMpeg can be found here (VideoHelp). The gui doesn't quite work right on my WinME system, but FFMpeg works fine. I haven't run into any sync problems working like this.
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