diff --git a/src/examples/export-sink.c b/src/examples/export-sink.c
index 0a5644f8d..8ecad3e01 100644
--- a/src/examples/export-sink.c
+++ b/src/examples/export-sink.c
@@ -304,7 +304,8 @@ static int port_set_format(void *object,
 						  SDL_TEXTUREACCESS_STREAMING,
 						  d->format.size.width,
 						  d->format.size.height);
-		SDL_LockTexture(d->texture, NULL, &dest, &d->stride);
+		if (SDL_LockTexture(d->texture, NULL, &dest, &d->stride) < 0)
+			return -EINVAL;
 		SDL_UnlockTexture(d->texture);
 
 	}
diff --git a/src/examples/local-v4l2.c b/src/examples/local-v4l2.c
index 2093a9b48..3a2ef35dc 100644
--- a/src/examples/local-v4l2.c
+++ b/src/examples/local-v4l2.c
@@ -210,7 +210,8 @@ static int port_set_format(void *object, enum spa_direction direction, uint32_t
 					       SDL_TEXTUREACCESS_STREAMING,
 					       d->format.size.width,
 					       d->format.size.height);
-		SDL_LockTexture(d->texture, NULL, &dest, &d->stride);
+		if (SDL_LockTexture(d->texture, NULL, &dest, &d->stride) < 0)
+			return -EINVAL;
 		SDL_UnlockTexture(d->texture);
 	}
 
diff --git a/src/examples/video-play-fixate.c b/src/examples/video-play-fixate.c
index b59be31b5..8503a6b3d 100644
--- a/src/examples/video-play-fixate.c
+++ b/src/examples/video-play-fixate.c
@@ -332,7 +332,10 @@ on_stream_param_changed(void *_data, uint32_t id, const struct spa_pod *param)
 					  SDL_TEXTUREACCESS_STREAMING,
 					  data->size.width,
 					  data->size.height);
-	SDL_LockTexture(data->texture, NULL, &d, &data->stride);
+	if (SDL_LockTexture(data->texture, NULL, &d, &data->stride) < 0) {
+		pw_stream_set_error(stream, -EINVAL, "invalid texture format");
+		return;
+	}
 	SDL_UnlockTexture(data->texture);
 
 	/* a SPA_TYPE_OBJECT_ParamBuffers object defines the acceptable size,
diff --git a/src/examples/video-play-pull.c b/src/examples/video-play-pull.c
index f9492edea..3ae69f55d 100644
--- a/src/examples/video-play-pull.c
+++ b/src/examples/video-play-pull.c
@@ -382,7 +382,10 @@ on_stream_param_changed(void *_data, uint32_t id, const struct spa_pod *param)
 					  SDL_TEXTUREACCESS_STREAMING,
 					  data->size.width,
 					  data->size.height);
-	SDL_LockTexture(data->texture, NULL, &d, &data->stride);
+	if (SDL_LockTexture(data->texture, NULL, &d, &data->stride) < 0) {
+		pw_stream_set_error(stream, -EINVAL, "invalid texture format");
+		return;
+	}
 	SDL_UnlockTexture(data->texture);
 
 	switch(sdl_format) {
diff --git a/src/examples/video-play-reneg.c b/src/examples/video-play-reneg.c
index c93ed24de..b8e83d233 100644
--- a/src/examples/video-play-reneg.c
+++ b/src/examples/video-play-reneg.c
@@ -225,7 +225,10 @@ on_stream_param_changed(void *_data, uint32_t id, const struct spa_pod *param)
 					  SDL_TEXTUREACCESS_STREAMING,
 					  data->size.width,
 					  data->size.height);
-	SDL_LockTexture(data->texture, NULL, &d, &data->stride);
+	if (SDL_LockTexture(data->texture, NULL, &d, &data->stride) < 0) {
+		pw_stream_set_error(stream, -EINVAL, "invalid texture format");
+		return;
+	}
 	SDL_UnlockTexture(data->texture);
 
 	/* a SPA_TYPE_OBJECT_ParamBuffers object defines the acceptable size,
diff --git a/src/examples/video-play.c b/src/examples/video-play.c
index 53041f284..6a12f2cc9 100644
--- a/src/examples/video-play.c
+++ b/src/examples/video-play.c
@@ -348,7 +348,11 @@ on_stream_param_changed(void *_data, uint32_t id, const struct spa_pod *param)
 					  SDL_TEXTUREACCESS_STREAMING,
 					  data->size.width,
 					  data->size.height);
-	SDL_LockTexture(data->texture, NULL, &d, &data->stride);
+	if (SDL_LockTexture(data->texture, NULL, &d, &data->stride) < 0) {
+		fprintf(stderr, "Couldn't lock texture: %s\n", SDL_GetError());
+		pw_stream_set_error(stream, -EINVAL, "invalid format");
+		return;
+	}
 	SDL_UnlockTexture(data->texture);
 
 	switch(sdl_format) {