diff --git a/src/screencast/pipewire_screencast.c b/src/screencast/pipewire_screencast.c
index 425bc80..d00d496 100644
--- a/src/screencast/pipewire_screencast.c
+++ b/src/screencast/pipewire_screencast.c
@@ -8,6 +8,7 @@
 #include <sys/mman.h>
 #include <unistd.h>
 #include <assert.h>
+#include <libdrm/drm_fourcc.h>
 
 #include "wlr_screencast.h"
 #include "xdpw.h"
@@ -35,8 +36,10 @@ static struct spa_pod *build_buffer(struct spa_pod_builder *b, uint32_t blocks,
 }
 
 static struct spa_pod *build_format(struct spa_pod_builder *b, enum spa_video_format format,
-		uint32_t width, uint32_t height, uint32_t framerate) {
-	struct spa_pod_frame f[1];
+		uint32_t width, uint32_t height, uint32_t framerate,
+		uint64_t *modifiers, int modifier_count) {
+	struct spa_pod_frame f[2];
+	int i, c;
 
 	enum spa_video_format format_without_alpha = xdpw_format_pw_strip_alpha(format);
 
@@ -44,12 +47,31 @@ static struct spa_pod *build_format(struct spa_pod_builder *b, enum spa_video_fo
 	spa_pod_builder_add(b, SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video), 0);
 	spa_pod_builder_add(b, SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw), 0);
 	/* format */
-	if (format_without_alpha == SPA_VIDEO_FORMAT_UNKNOWN) {
+	if (modifier_count > 0 || format_without_alpha == SPA_VIDEO_FORMAT_UNKNOWN) {
+		// modifiers are defined only in combinations with their format
+		// we should not announce the format without alpha
 		spa_pod_builder_add(b, SPA_FORMAT_VIDEO_format, SPA_POD_Id(format), 0);
 	} else {
 		spa_pod_builder_add(b, SPA_FORMAT_VIDEO_format,
 				SPA_POD_CHOICE_ENUM_Id(3, format, format, format_without_alpha), 0);
 	}
+	/* modifiers */
+	if (modifier_count == 1 && modifiers[0] == DRM_FORMAT_MOD_INVALID) {
+		// we only support implicit modifiers, use shortpath to skip fixation phase
+		spa_pod_builder_prop(b, SPA_FORMAT_VIDEO_modifier, SPA_POD_PROP_FLAG_MANDATORY);
+		spa_pod_builder_long(b, modifiers[0]);
+	} else if (modifier_count > 0) {
+		// build an enumeration of modifiers
+		spa_pod_builder_prop(b, SPA_FORMAT_VIDEO_modifier, SPA_POD_PROP_FLAG_MANDATORY | SPA_POD_PROP_FLAG_DONT_FIXATE);
+		spa_pod_builder_push_choice(b, &f[1], SPA_CHOICE_Enum, 0);
+		// modifiers from the array
+		for (i = 0, c = 0; i < modifier_count; i++) {
+			spa_pod_builder_long(b, modifiers[i]);
+			if (c++ == 0)
+				spa_pod_builder_long(b, modifiers[i]);
+		}
+		spa_pod_builder_pop(b, &f[1]);
+	}
 	spa_pod_builder_add(b, SPA_FORMAT_VIDEO_size,
 		SPA_POD_Rectangle(&SPA_RECTANGLE(width, height)),
 		0);
@@ -69,7 +91,8 @@ static uint32_t build_formats(struct spa_pod_builder *b, struct xdpw_screencast_
 		const struct spa_pod *params[static 1]) {
 	uint32_t param_count = 1;
 	params[0] = build_format(b, xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[WL_SHM].format),
-			cast->screencopy_frame_info[WL_SHM].width, cast->screencopy_frame_info[WL_SHM].height, cast->framerate);
+			cast->screencopy_frame_info[WL_SHM].width, cast->screencopy_frame_info[WL_SHM].height, cast->framerate,
+			NULL, 0);
 
 	return param_count;
 }