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I use ffmpeg to convert my files, but when I do so, I lose the keyframes metadata from my flv files.

The command I use right now is: 

$/usr/local/bin/ffmpeg -i %s -ab 96k -ar 44100 -b 500k -r 25 -f flv %s

How can I avoid ffmpeg to delete the keyframes info?

Regards

Zeeshan

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migrated from stackoverflow.com May 20 '11 at 5:46

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2 Answers

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Even though the metadata can be lost during any conversion step, it is always possible to regenerate them later.

There are a few tools that can be used to regenerate keyframe informations, including:

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Try adding the following argument: 

-map_meta_data 0:0

This should copy the metadata of the first stream of the input file to the first stream of the output file. More information can be found here: http://ffmpeg.org/ffmpeg-doc.html#SEC12

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Did not work, this is how my command looks after adding the argument you told me: '/usr/local/bin/ffmpeg -i %s -map_meta_data 0:0 -ab 96k -ar 44100 -b 500k -r 25 -f flv %s' – Zeeshan Rang May 19 '11 at 21:31
Is this correct? I am sorry, I am new to linux. – Zeeshan Rang May 19 '11 at 21:32
You might need to look at the documentation there to see if the option I showed needs to be modified for the video you are using. – Justin Pearce May 20 '11 at 23:11
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