Question: Why was avcodec and avformat dll file size was big in versions prior to 2.0?

[Dushyant]

In scrcpy-win32-v1.24, these 2 files were very big in size:

In scrcpy-win64-v2.4, the same files are much smaller in size.

Was there a malware in these dll files?
If not, what caused the files to reduce in size?

[Romain Vimont]

Since 0fc62bf, scrcpy uses a custom build of FFmpeg with only the necessary features.
(And since 8d87b91 the build script has been moved to the scrcpy repo.)

[Dushyant]

That's very nice!