38 lines
843 B
Markdown
38 lines
843 B
Markdown
+++
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title = "converters"
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draft = false
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tags = [
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"unix",
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"converters"
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]
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date = "2013-10-19"
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+++
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# Converters
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## Video converting/concatenating etc
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Met behulp van `ffmpeg` (https://trac.ffmpeg.org/wiki/How%20to%20concatenate%20(join,%20merge)%20media%20files):
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#### Concatting
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Alle files die eindigen op mp4:
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```
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ffmpeg -f concat -i <(printf "file '%s'<br/>n" ./*.mp4) -c copy output.mp4
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```
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Gaat ook met `mplayer` en de tool `mencoder`:
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```
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mencoder -oac pcm -ovc copy -idx -o all.mp4 1.mp4 2.mp4 3.mp4 4.mp4 5.mp4
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```
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#### Resizing (compressing)
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Ook met `ffmpeg` - bijvoorbeeld reduceren naar "medium" quality. Neem alle mp4s in folder:
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```
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for i in *.mp4 ; do ffmpeg -i "$i" -c:a copy -preset medium "${i%.*}_medium.${i##*.}"; done
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```
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Voor meer presets zoals "medium", zie http://trac.ffmpeg.org/wiki/x264EncodingGuide |