diff --git a/plugins/input_rtsp/input_rtsp_node.cpp b/plugins/input_rtsp/input_rtsp_node.cpp
index 9fd9784..1c69988 100644
--- a/plugins/input_rtsp/input_rtsp_node.cpp
+++ b/plugins/input_rtsp/input_rtsp_node.cpp
@@ -331,12 +331,19 @@ private:
 
             // Packet buffer group (bitstream input). MPP will pick the best allocator available.
             if (!pkt_group) {
-                if (mpp_buffer_group_get_internal(&pkt_group, MPP_BUFFER_TYPE_ION | MPP_BUFFER_FLAGS_CACHABLE) != MPP_OK) {
-                    // Try without flags.
-                    if (mpp_buffer_group_get_internal(&pkt_group, MPP_BUFFER_TYPE_ION) != MPP_OK) {
-                        pkt_group = nullptr;
-                        return false;
-                    }
+                auto try_group = [&](MppBufferType t) -> bool {
+                    return mpp_buffer_group_get(&pkt_group, t, MPP_BUFFER_INTERNAL, MODULE_TAG, __FUNCTION__) == MPP_OK;
+                };
+
+                // Prefer dma_heap when available (newer kernels), then ion/drm as fallback.
+                if (!try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_ION | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_ION)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DRM | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DRM))) {
+                    pkt_group = nullptr;
+                    return false;
                 }
                 mpp_buffer_group_limit_config(pkt_group, 0, 8);
             }
@@ -392,6 +399,8 @@ private:
             }
             mpp_buffer_put(pkt_buf);  // packet holds reference
 
+            mpp_packet_set_data(packet, dst);
+            mpp_packet_set_size(packet, size);
             mpp_packet_set_pos(packet, dst);
             mpp_packet_set_length(packet, size);
             mpp_packet_set_pts(packet, pts_us);
@@ -445,7 +454,18 @@ private:
             MppBufferGroup group = frame_group;
             size_t buf_size = mpp_frame_get_buf_size(frame);
             if (!group) {
-                if (mpp_buffer_group_get_internal(&group, MPP_BUFFER_TYPE_DRM, NULL) != MPP_OK) return;
+                auto try_group = [&](MppBufferType t) -> bool {
+                    return mpp_buffer_group_get(&group, t, MPP_BUFFER_INTERNAL, MODULE_TAG, __FUNCTION__) == MPP_OK;
+                };
+                if (!try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DRM | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DRM)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_ION | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_ION))) {
+                    std::cerr << "[input_rtsp] mpp info_change: failed to alloc frame buffer group\n";
+                    return;
+                }
                 frame_group = group;
             } else {
                 mpp_buffer_group_clear(group);