diff --git a/nodes/decklink-out/src/decklink_out_node.cpp b/nodes/decklink-out/src/decklink_out_node.cpp
index d836a9b..d358ad9 100644
--- a/nodes/decklink-out/src/decklink_out_node.cpp
+++ b/nodes/decklink-out/src/decklink_out_node.cpp
@@ -187,14 +187,19 @@ void DeckLinkOutNode::schedule_frame(void* mxl_payload, long width, long height,
     if (!output_) return;
 
     int32_t out_row_bytes = 0;
-    if (output_->RowBytesForPixelFormat(bmdFormat10BitYUV, width, &out_row_bytes) != S_OK || out_row_bytes <= 0) {
+    HRESULT row_hr = output_->RowBytesForPixelFormat(bmdFormat10BitYUV, width, &out_row_bytes);
+    if (row_hr != S_OK || out_row_bytes <= 0) {
+        spdlog::warn("DeckLink-out: RowBytesForPixelFormat failed hr=0x{:08x}, using fallback", static_cast<uint32_t>(row_hr));
         out_row_bytes = ((width + 5) / 6) * 16;
     }
+    spdlog::debug("DeckLink-out: creating frame {}x{} row_bytes={}", width, height, out_row_bytes);
 
     IDeckLinkMutableVideoFrame* frame = nullptr;
-    if (output_->CreateVideoFrame(width, height, out_row_bytes, bmdFormat10BitYUV,
-                                   bmdFrameFlagDefault, &frame) != S_OK) {
-        spdlog::warn("DeckLink-out: failed to create output frame {}x{}", width, height);
+    HRESULT hr = output_->CreateVideoFrame(width, height, out_row_bytes, bmdFormat10BitYUV,
+                                   bmdFrameFlagDefault, &frame);
+    if (hr != S_OK || !frame) {
+        spdlog::warn("DeckLink-out: failed to create output frame {}x{} row_bytes={} hr=0x{:08x}",
+                     width, height, out_row_bytes, static_cast<uint32_t>(hr));
         return;
     }