Wednesday, December 13, 2023

ffmpeg to convert MPEG4 to Animated GIF

In short, use the following command to do the conversion:

ffmpeg -i source_file.m4v -filter_complex "[0:v] split [a][b];[a] palettegen [p];[b][p] paletteuse" output_trimmed_enhanced.gif


Reference: https://www.bannerbear.com/blog/how-to-make-a-gif-from-a-video-using-ffmpeg/



Thursday, December 7, 2023

Using Conda behind firewall

 To use conda behind firewall, in Windows:

1) Edit the .condarc

channels:
- defaults
proxy_servers:
  http: <proxy_host>:8080
  https: <proxy_host>:8080
ssl_verify: False

NOTE: Beware doing something like this:
http: http://proxyhost:8080
https: http://proxyhost:8080

Don't add "http://" above, it's wrong!


2) Using pip (need to trust the hosts)

pip install --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org pandas

Some other better methods exist, the above is just one of the options that works.

Upgrade nodejs in conda (from v18 to v26)

If your conda env is nodejs v18, doing a conda install nodejs=26 is likely to create a lot of conflict. Consider remove those conflicting p...