diff --git a/doc/releases/migration-guide-4.1.rst b/doc/releases/migration-guide-4.1.rst
index b5325beba59f..ec6e0e17fce5 100644
--- a/doc/releases/migration-guide-4.1.rst
+++ b/doc/releases/migration-guide-4.1.rst
@@ -354,6 +354,11 @@ Video
   The new ``video-controls.h`` source now contains description of each control ID to help
   disambiguating.
 
+* The ``video_pix_fmt_bpp()`` function was returning a byte count, this got replaced by
+  ``video_bits_per_pixel()`` which return a bit count. For instance, invocations such as
+  ``pitch = width * video_pix_fmt_bpp(pixfmt)`` needs to be replaced by an equivalent
+  ``pitch = width * video_bits_per_pixel(pixfmt) / BITS_PER_BYTE``.
+
 Watchdog
 ========
 
diff --git a/doc/releases/release-notes-4.1.rst b/doc/releases/release-notes-4.1.rst
index 688dd20b6e4f..27b5665eb8cc 100644
--- a/doc/releases/release-notes-4.1.rst
+++ b/doc/releases/release-notes-4.1.rst
@@ -300,6 +300,9 @@ Drivers and Sensors
   * Changed :file:`include/zephyr/drivers/video-controls.h` to have control IDs (CIDs) matching
     those present in the Linux kernel.
 
+  * Changed ``video_pix_fmt_bpp()`` returning the byte count and only supports 8-bit depth,
+    into ``video_bits_per_pixel()`` returning the bit count and supports any color depth.
+
 * Watchdog
 
   * Added :kconfig:option:`CONFIG_HAS_WDT_NO_CALLBACKS` which drivers select when they do not support