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I have Sony Walkman and i had convert flv video to mp4 but Sony walkman still cannot read it and give an error 'Cannot play file format cannot supported'.. I also had tired to convert it by ffmpeg and avidemux. I using Sony walkman NWZ-A726

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Which commands did you use? Which Walkman device do you use? –  falstaff Sep 9 '11 at 13:52
    
There might be a few video codecs for MP4 [the only one I can think of is H.264, but I wouldn't be surprised if there were several], but if you look up what what codecs your walkman supports, then you can use the -vcodec flag in ffmpeg to use a specific codec –  Matt Sep 9 '11 at 15:04
    
Have you resolved this question? –  pl1nk Jun 25 '12 at 16:26
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3 Answers 3

You can also use MikSoft Mobile Media Converter for the transcoding task, which features pre-loaded Presets for the Sony Ericsson Xperia and/or Vivaz devices, which should be compatible with your Sony Walkman. Additionally you can use several codecs from within the GUI in order to perform an easy transcodification.

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Screenshot provided for you to see the Profiles Configuration windows.

Good luck!

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I'd suggest HandBrake

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You are probably using the wrong codecs, there might be several for MP4.

Take a look at Arista, you can download pre-made conversion presets for Arista from http://www.transcoder.org/presets/, they should be custom-made to include the correct codecs for that device.

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