2d,2.5d design

raster

GIMP:

ImageMagic:

ImageMagic used in batch processing of pictures is very convenient, it can deal with the size, size, resolution, watermark of the pictures in batch.

Before

[root@web menu]# tree
.
├── sm1b561jbbgh.png
├── sm1p4x55am8x.png
├── sm1txq3jzqpd.png
├── sm1xov7dy5ou.png
├── sm1y6af5i685.png
├── smfo7aqhsk3t.png
├── smt9oezo59m2.png
└── smvymyr3wnlj.png
0 directories, 8 files

convert

for file in *.png; do convert $file ${file%%.*}.jpg; done

After

[root@web menu]# tree
.
├── sm1b561jbbgh.jpg
├── sm1b561jbbgh.png
├── sm1p4x55am8x.jpg
├── sm1p4x55am8x.png
├── sm1txq3jzqpd.jpg
├── sm1txq3jzqpd.png
├── sm1xov7dy5ou.jpg
├── sm1xov7dy5ou.png
├── sm1y6af5i685.jpg
├── sm1y6af5i685.png
├── smfo7aqhsk3t.jpg
├── smfo7aqhsk3t.png
├── smt9oezo59m2.jpg
├── smt9oezo59m2.png
├── smvymyr3wnlj.jpg
└── smvymyr3wnlj.png
0 directories, 16 files

verctor

Inkscape:

FreeCAD:

3d design

Rhino:

Fusion 360:

Xdesign:

Antimony:

game engines

unreal:

unity:

audio video

OpenShot:

ffmpeg:

convert m4v to mp3 file

ffmpeg -i B_introduction.m4v -b:a 128k output.mp3

Extraction is simple, from music.m4a to 2 minutes from 3:30 to 5:30 to clip.m4a

ffmpeg -i music.m4a -ss 3:30 -to 5:30 -c copy clip.m4a

ffmpeg -i Fab-20180117B_Introduction_\ principles\ and\ practices.mp4 -ss 50:00 -to 60:00 -b:a 128k Fab-20180117B_Introduction_\ principles\ and\ practices_6.mp3