Fix AV1 palette encoding error

patches/0001-vaav1enc-Do-not-enable-palette-mode-by-default.patch

@@ -0,0 +1,30 @@
+From a03dc6e9f49e7c40f9de054fd7530c1e81df268e Mon Sep 17 00:00:00 2001
+From: He Junyan <[email protected]>
+Date: Tue, 15 Oct 2024 16:44:27 +0800
+Subject: [PATCH] vaav1enc: Do not enable palette mode by default
+
+Palette mode should only be enabled only when we know that the content
+of the picture is simple. For example, only white letters on black
+screen in SCC mode. So, by default, we need to disable it.
+---
+ subprojects/gst-plugins-bad/sys/va/gstvaav1enc.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/subprojects/gst-plugins-bad/sys/va/gstvaav1enc.c b/subprojects/gst-plugins-bad/sys/va/gstvaav1enc.c
+index 101a1aa766..d0ac0a4081 100644
+--- a/subprojects/gst-plugins-bad/sys/va/gstvaav1enc.c
++++ b/subprojects/gst-plugins-bad/sys/va/gstvaav1enc.c
+@@ -2333,8 +2333,8 @@ _av1_setup_encoding_features (GstVaAV1Enc * self)
+     /* not enable it now. */
+     self->features.enable_warped_motion = FALSE;
+     // (features.bits.support_warped_motion != 0);
+-    self->features.enable_palette_mode =
+-        (features.bits.support_palette_mode != 0);
++    self->features.enable_palette_mode = FALSE;
++    //  (features.bits.support_palette_mode != 0);
+     self->features.enable_dual_filter =
+         (features.bits.support_dual_filter != 0);
+     self->features.enable_jnt_comp = (features.bits.support_jnt_comp != 0);
+-- 
+2.25.1
+