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i have to Convert MP4 Video File into FLV Format Using FFMPEG which i received from different mobile device. i found most of the stuff to convert flv video into mp4 and all.

can any body help me out to convert mp4 format into flv using FFMPEG. i am using windows 7 64bit machine.

nipul_tech
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1 Answers1

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I'm late, but if this can help somebody, it's time well spent.

If I understand correctly, you want to convert MP4 to FLV using FFMPEG. Here are two command lines to help you do that; I'm currently using them myself (you can adjust them to your needs too) :

ffmpeg -i source.mp4 -c:v libx264 -crf 19 destinationfile.flv

and if the first one doesn't work :

ffmpeg -i source.mp4 -c:v libx264 -ar 22050 -crf 28 destinationfile.flv

Please note that -crf XX is the quality of the video you will create. It's between 0 and 51 (but between 17 and 23 is a reasonable range and the lower the number is, the better quality the video is going to be).

The -ar 22050 is for adjusting the audio sample range (audio quality). You can choose 11025, 22050 or 44100.

I suggest you read this Tutorial for FFMPEG . It's really complete and has many useful tips.

Hope this will help you or somebody in the same situation.

ghoti
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John_D
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    This is great and complete answer - it should be accepted - it definitely helped me as I was looking for exactly the same, to convert mp4 to flv using ffmpeg. – Siniša Sep 30 '14 at 04:41
  • as a side note: i was ready to go with `choco install ffmpeg` - "Adobe Media Encoder" does not support FLV anymore, so this did it for me – BananaAcid Sep 29 '16 at 14:40
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    i ended up with `ffmpeg -i source.mp4 -strict experimental -vcodec "flv1" -qscale "4" -an converted.flv` to have a **Adobe Animate CC** import compatible file with good quality and no sound (`-an` removes the sound, use `-ar 22050` otherwise).. all done on windows. – BananaAcid Sep 29 '16 at 15:05