Commit 67c9eaccfe for ffmpeg

commit 67c9eaccfe87043e7798b65df78c447264674286
Author: Lynne <dev@lynne.ee>
Date:   Sat Oct 3 16:53:27 2026 +0900

    ffv1_vulkan: use a 32-bit multiply when decoding remap runs

    The product of the run length and the current multiplier fits in 32
    bits for any valid stream, so avoid the 64-bit multiplication.
    Also, the encoder uses 32-bit bits for this step.

diff --git a/libavcodec/vulkan/ffv1_dec_setup.comp.glsl b/libavcodec/vulkan/ffv1_dec_setup.comp.glsl
index ba9fc3fb05..5b38197f3f 100644
--- a/libavcodec/vulkan/ffv1_dec_setup.comp.glsl
+++ b/libavcodec/vulkan/ffv1_dec_setup.comp.glsl
@@ -123,7 +123,7 @@ bool decode_remap(uint slice_idx, inout SliceContext sc)
             uint run0 = lu != 0 ? 0u  : run;
             uint run1 = lu != 0 ? run : 1u;

-            i += int64_t(run0) * int64_t(current_mul);
+            i += int64_t(run0 * uint(current_mul));

             while (run1 > 0u) {
                 run1--;