[rpms/ffmpeg] rawhide: document ABI bump rebuild process

[rpms/ffmpeg] rawhide: document ABI bump rebuild process

[Dominik 'Rathann' Mierzejewski]

A new commit has been pushed.

Repo   : rpms/ffmpeg
Branch : rawhide
Commit : b29f80501092ae9cc6c7f7aa1f76db026e83b01d
Author : Dominik 'Rathann' Mierzejewski <dominik@greysector.net>
Date   : 2026-09-07T00:55:43+02:00
Stats  : +22/-0 in 1 file(s)
URL    : https://src.fedoraproject.org/rpms/ffmpeg/c/b29f80501092ae9cc6c7f7aa1f76db026e83b01d?branch=rawhide

Log:
document ABI bump rebuild process

---
diff --git a/README.md b/README.md
index 238c0d3..2672861 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,25 @@ demux, stream, filter and play pretty much anything that humans and machines
 have created. It supports the most obscure ancient formats up to the cutting
 edge. No matter if they were designed by some standards committee, the
 community or a corporation.
+
+## How to bump ABI
+
+1. `koji request-side-tag`
+2. `koji edit-sidetag --rpm-macro=_with_bootstrap=1 fxx-build-side-yyyyyy`
+3. bootstrap `ffmpeg`
+4. bootstrap `libheif`
+5. bootstrap `vtk`
+6. build `chromaprint`
+7. `koji edit-sidetag --remove-rpm-macro=_with_bootstrap fxx-build-side-yyyyyy`
+5. unbootstrap `vtk`
+6. unbootstrap `ffmpeg`
+7. unbootstrap `libheif`
+8. continue with other dependents (`fedrq wrsrc -s ffmpeg -F name`)
+
+### Rebuild priority:
+
+* `cef`
+* `opencv`
+* `kf6-kfilemetadata`
+* `qt6-qtmultimedia`
+* `qt6-qtwebengine`