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  1. Goal: Use ffmpeg to convert .m4v to anything Windows Media Player 11 will play without additional codecs. Preferably not .avi and as close to original quality as the output format will allow. My target audio is conversation so quality is less important.

    Tried: I went here: http://support.apple.com/kb/HT1425 and downloaded Sample_iPod.m4v. It's attached for your convenience. Doing my best to distill various ffmpeg cmd line examples, I tried this:
    ffmpeg -i sample_iPod.mv4 -r 25 -f mpeg -vcodec mpeg2video -ar 48000 -b 500k -ab 128k -s 320x240 -y sample.mpeg

    I get audio, but very jumbled video. No suprise, I'm new to this and need help with the ffmpeg args.

    Thanks in advance for any replies.
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  2. Member
    Join Date
    May 2005
    Location
    Toronto ||*||
    Search Comp PM
    Windows Vista/7 will be able to playback the file without any additional codecs however XP won't without
    MPEG2 decoder installation. Maybe convert to MPEG1Video? or even WMV

    ffmpeg -i FILE -sameq -vcodec wmv2 -acodec wmav2 outfile.wmv
    is the command i used on the file you uploaded. See attached.
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  3. Member
    Join Date
    Sep 2007
    Location
    Europe
    Search PM
    Change -f mpeg in your command line to -f vob.
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  4. Changing to wmv appears to work. I can't explain why vob did not.

    But I had neglected to mention that my target machine is a locked down XP that can't download or install anything.

    My development XP machine did work with stock wmp 11 and:

    ffmpeg -i sample_iPod.mv4 -r 25 -f mpeg -vcodec mpeg2video -s 320x240 -y sample.mpeg

    But it also has Nero and Roxio suites installed. The same file on the target or with any other permutations I tried (mpeg1video/-acodec anything) either had jumbled video and/or no audio. Clearly there's a bunch I don't understand.

    Thanks for the quick response!
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