FFMPEG Splitting MP4 with Same Quality
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by Pragmatic
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Published on 2010-05-13T20:08:58Z
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2010/05/13
20:14 UTC
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I have one large MP4 file. I am attempting to split it into smaller files.
ffmpeg -i largefile.mp4 -sameq -ss 00:00:00 -t 00:50:00 smallfile.mp4
I thought using -sameq would keep the same quality settings. However, I must not understand what that does.
I'm looking to keep the same quality (audio/video) and compression with the split files. However, this setting makes the split files much larger.
What flag(s) do I need to set to keep the same quality and attributes in the split files while maintaining the same quality to size ratio?
For instance if my original file is about 12 GB and is 1920x1080 with a bitrate of 10617kbps and a framerate of 23 frames/sec and 6 channel audio with 317kbps, I would like the split files to be the same only a third of this size (if i split it into three pieces).
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