April 9, 2021 03:53
Video
Note: Without proper reencoding the filesize will stay the same and some devices still don’t open the results - even if they support e.g. mp4 - this does not mean they support the used codec. To fix this, please reencode the files - this will take much more time, but provides better filesizes and results!
MP4 to MP4
This just reencodes the files (reduce size)…
#!/bin/bash
mkdir -p ../reencoded/
for i in *.mp4;
do name=`echo ${i%.*}`;
echo $name;
# Using the pts has no value fix...
ffmpeg -fflags +genpts -i "$i" -vcodec libx265 -crf 28 "../reencoded/${name}.mp4";
sleep 1
done
MKV to MKV
This just reencodes the files (reduce size) - same as for mp4 (but keeps all audio tracks and subtitle metadata)!
#!/bin/bash
mkdir -p ../reencoded/
for i in *.mkv;
do name=`echo ${i%.*}`;
echo $name;
# Using the pts has no value fix...
ffmpeg -fflags +genpts -i "$i" -vcodec libx265 -crf 28 -map 0 -scodec copy -acodec copy "../reencoded/${name}.mkv";
sleep 1
done
AVI to MP4
Fast (without reencode)
This just copies the data without proper reencoding - some devices don’t like the results…
#!/bin/bash
mkdir -p ./converted/
for i in *.avi;
do name=`echo ${i%.*}`;
echo $name;
# Using the pts has no value fix...
ffmpeg -fflags +genpts -i "$i" -codec copy "./converted/${name}.mp4";
sleep 1
done
MKV to MP4
#!/bin/bash
mkdir -p ./converted/
for i in *.mkv;
do name=`echo ${i%.*}`;
echo $name;
ffmpeg -i "$i" "./converted/${name}.mp4";
sleep 1
done
Fast (without reencode)
This just copies the data without proper reencoding - some devices don’t like the results…
#!/bin/bash
mkdir -p ./converted/
for i in *.mkv;
do name=`echo ${i%.*}`;
echo $name;
ffmpeg -i "$i" -codec copy "./converted/${name}.mp4";
sleep 1
done
Audio
Normalize
This normalizes to 0db - NOTE that the parent folder is used since we dont change the audio format and therefore we would loop for a infinite time…
#!/bin/bash
mkdir -p ../normalized/
for i in *.mp3;
do name=`echo ${i%.*}`;
echo $name;
ffmpeg -i "$i" -af "volume=0dB" "../normalized/${name}.mp3";
sleep 1
done
FLAC to MP3
#!/bin/bash
mkdir -p ./converted/
for i in *.flac;
do name=`echo ${i%.*}`;
ffmpeg -i "$i" -acodec libmp3lame "./converted/${name}.mp3";
sleep 1
done
