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Dale wrote: |
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> Howdy, |
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> |
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> I been trying to get this to work right for a goooooood while now. I'm |
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> confused here. I have some videos that I download that are split up. |
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> Some have two or three parts and a few 4 or 5. What I can't get is this, |
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> I can't seem to take say two 250Mb videos and make it come anywhere near |
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> 500Mbs when spliced together. They usually end up being 1.5Gb and |
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> sometimes much more. I use Kdenlive to do this with. I have tried every |
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> setting that I can find. I have used exiftool to try to match the |
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> encoding and rates and all that with no improvement or very little |
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> improvement. |
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> |
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> Is there some secret spice that I am missing or something? Why can't I |
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> take two videos and splice them together and it be something close to |
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> the two file sizes added together? I'm not asking for a perfect fit but |
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> at least something close. If I can get 2 250Mb videos to splice together |
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> and be 600Mbs, that would be good enough. |
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|
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You're probably re-encoding, rather than simply splicing the existing |
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streams. The resulting size will necessarily have some quality loss, and |
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the resulting file size will depend greatly on the quality of your |
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encoder, not just on your settings for codec choice and options. |
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|
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What you really want to do is repackage the audio and video streams from |
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all your files into a single container file. |
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Back when I was poking "simple" things like this, I used 'avidemux'. |
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That was ages ago, and on Ubuntu, but it might work for you. You'd want |
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to use 'copy' for your audio and video selection, to avoid any transcoding. |
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On Ubuntu, I usually had difficulties(read: crashes) with avidemux when |
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some tool or library it wanted wasn't installed--it wasn't smart enough |
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to remove those options from its menus if those options weren't present. |
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I haven't tried it on gentoo; it's plausible someone fixed that either |
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upstream or as part of some USE flag awareness in the past couple years. |
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|
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I expect there are ways to do the exact same thing on the command line |
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using ffmpeg, but I'm less familiar with that tool. |
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