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  1. Member
    Join Date
    Sep 2018
    Location
    USA
    Search Comp PM
    I'm trying to assemble an ffmpeg one-liner to extract both an mp4 and KLV metadata from a UAV video. I have two separate commands that work for this purpose:

    ffmpeg -i input.mpg -map data-re -codec copy -f data output.klv
    ffmpeg -i input.mpg output.mp4

    But now I'd like to accomplish this in a single line. I've tried a number of variations but keep getting errors. e.g.,

    ffmpeg -i input.mpg -map 0:0 -map data-re -codec:v:0 copy -codec:d copy output.mp4 -f data output.klv

    gives me the error "Output file #1 does not contain any stream." I'm new to ffmpeg and probably doing something dumb, but I can't find any examples that adequately address this scenario. What am I doing wrong? Thanks!
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  2. Member
    Join Date
    Aug 2010
    Location
    San Francisco, California
    Search PM
    Your map and codec options should appear before each output file to which they apply. In other words, don't lump the outputs at the end of the command.
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  3. Member
    Join Date
    Sep 2018
    Location
    USA
    Search Comp PM
    Great, thanks! I knew it was something silly...
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