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  1. Hi,

    I’ve just started working with FFMpeg. I’m using it to convert video to FLV format as it’s uploaded to a web application. My first attempt was fine (I just gave it an input and an output), but I’m trying to improve the quality of the encoded videos. I’m trying to fix the quality by using two-pass encoding, but I’m doing something wrong as my output files are all empty. These are the lines I’m using:

    ffmpeg –i myfile.avi –pass 1 –passlogfile pass.log output.flv
    ffmpeg –i myfile.avi –pass 2 –passlogfile pass.log output.flv

    I’ve tried specifying “-qscale 2” in the first command, “-b 300” in the second, and “-vcodec flv” in both – the result is always the same. Can anyone point me in the right direction?

    Thanks!
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  2. *bump?*

    If anyone has any tips on improving the quality of videos produced with ffmpeg, I would really appreciate it. I'm very new to this and it feels like I've tried everything I've found in the documentation. Thanks in advance...
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  3. Member
    Join Date
    Dec 2004
    Location
    Australia
    Search Comp PM
    Best way to increase the quality of flv files is to use VP62 instead of Sorenson Spark (H.263). ffmpeg doesn't support vp62 encoding though.
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  4. Thanks for the tip. I need to be able to run the encoder as a batch process, which is why I've been using ffmpeg. Is there a command line encoder (or one that works in .NET) that uses VP62?
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