diff --git a/video/out/hwdec/dmabuf_interop.h b/video/out/hwdec/dmabuf_interop.h
index e9b3e8e8f5..3bf01a0fca 100644
--- a/video/out/hwdec/dmabuf_interop.h
+++ b/video/out/hwdec/dmabuf_interop.h
@@ -38,7 +38,7 @@ struct dmabuf_interop {
 struct dmabuf_interop_priv {
     int num_planes;
     struct mp_image layout;
-    struct ra_tex *tex[4];
+    struct ra_tex *tex[AV_DRM_MAX_PLANES];
 
     AVDRMFrameDescriptor desc;
     bool surface_acquired;
diff --git a/video/out/hwdec/dmabuf_interop_gl.c b/video/out/hwdec/dmabuf_interop_gl.c
index dad67d9821..0f6fb89e20 100644
--- a/video/out/hwdec/dmabuf_interop_gl.c
+++ b/video/out/hwdec/dmabuf_interop_gl.c
@@ -52,10 +52,10 @@ typedef void *EGLImageKHR;
 #define EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT 0x344A
 
 struct vaapi_gl_mapper_priv {
-    GLuint gl_textures[4];
-    EGLImageKHR images[4];
+    GLuint gl_textures[AV_DRM_MAX_PLANES];
+    EGLImageKHR images[AV_DRM_MAX_PLANES];
 
-    const struct ra_format *planes[4];
+    const struct ra_format *planes[AV_DRM_MAX_PLANES];
 
     EGLImageKHR (EGLAPIENTRY *CreateImageKHR)(EGLDisplay, EGLContext,
                                               EGLenum, EGLClientBuffer,
@@ -72,7 +72,7 @@ static bool gl_create_textures(struct ra_hwdec_mapper *mapper)
     struct vaapi_gl_mapper_priv *p = p_mapper->interop_mapper_priv;
 
     GL *gl = ra_gl_get(mapper->ra);
-    gl->GenTextures(4, p->gl_textures);
+    gl->GenTextures(AV_DRM_MAX_PLANES, p->gl_textures);
     for (int n = 0; n < p_mapper->num_planes; n++) {
         gl->BindTexture(GL_TEXTURE_2D, p->gl_textures[n]);
         gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -109,8 +109,8 @@ static void gl_delete_textures(const struct ra_hwdec_mapper *mapper)
     struct vaapi_gl_mapper_priv *p = p_mapper->interop_mapper_priv;
 
     GL *gl = ra_gl_get(mapper->ra);
-    gl->DeleteTextures(4, p->gl_textures);
-    for (int n = 0; n < 4; n++) {
+    gl->DeleteTextures(AV_DRM_MAX_PLANES, p->gl_textures);
+    for (int n = 0; n < AV_DRM_MAX_PLANES; n++) {
         p->gl_textures[n] = 0;
         ra_tex_free(mapper->ra, &p_mapper->tex[n]);
     }
@@ -143,6 +143,9 @@ static bool vaapi_gl_mapper_init(struct ra_hwdec_mapper *mapper,
         return false;
     }
 
+    static_assert(MP_ARRAY_SIZE(desc->planes) == AV_DRM_MAX_PLANES, "");
+    static_assert(MP_ARRAY_SIZE(mapper->tex) == AV_DRM_MAX_PLANES, "");
+
     // remember format to allow texture recreation
     for (int n = 0; n < desc->num_planes; n++) {
         p->planes[n] = desc->planes[n];
@@ -325,7 +328,7 @@ static void vaapi_gl_unmap(struct ra_hwdec_mapper *mapper)
         gl_delete_textures(mapper);
     }
 
-    for (int n = 0; n < 4; n++) {
+    for (int n = 0; n < AV_DRM_MAX_PLANES; n++) {
         if (p->images[n])
             p->DestroyImageKHR(eglGetCurrentDisplay(), p->images[n]);
         p->images[n] = 0;
diff --git a/video/out/hwdec/dmabuf_interop_pl.c b/video/out/hwdec/dmabuf_interop_pl.c
index 0a8ec5b011..1f036e3281 100644
--- a/video/out/hwdec/dmabuf_interop_pl.c
+++ b/video/out/hwdec/dmabuf_interop_pl.c
@@ -110,7 +110,7 @@ static bool vaapi_pl_map(struct ra_hwdec_mapper *mapper,
 
 static void vaapi_pl_unmap(struct ra_hwdec_mapper *mapper)
 {
-    for (int n = 0; n < 4; n++)
+    for (int n = 0; n < MP_ARRAY_SIZE(mapper->tex); n++)
         ra_tex_free(mapper->ra, &mapper->tex[n]);
 }