diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index 47de7ef6b0f7c..34cd17a129f6a 100644
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -512,8 +512,8 @@ int ff_decklink_list_devices(AVFormatContext *avctx,
         return AVERROR(EIO);
 
     while (ret == 0 && iter->Next(&dl) == S_OK) {
-        IDeckLinkOutput *output_config;
-        IDeckLinkInput *input_config;
+        IDeckLinkOutput_v14_2_1 *output_config;
+        IDeckLinkInput_v14_2_1 *input_config;
         const char *display_name = NULL;
         const char *unique_name = NULL;
         AVDeviceInfo *new_device = NULL;
@@ -527,14 +527,14 @@ int ff_decklink_list_devices(AVFormatContext *avctx,
             goto next;
 
         if (show_outputs) {
-            if (dl->QueryInterface(IID_IDeckLinkOutput, (void **)&output_config) == S_OK) {
+            if (dl->QueryInterface(IID_IDeckLinkOutput_v14_2_1, (void **)&output_config) == S_OK) {
                 output_config->Release();
                 add = 1;
             }
         }
 
         if (show_inputs) {
-            if (dl->QueryInterface(IID_IDeckLinkInput, (void **)&input_config) == S_OK) {
+            if (dl->QueryInterface(IID_IDeckLinkInput_v14_2_1, (void **)&input_config) == S_OK) {
                 input_config->Release();
                 add = 1;
             }
diff --git a/libavdevice/decklink_common.h b/libavdevice/decklink_common.h
index 6b32dc2d09cba..4f836aee66cd3 100644
--- a/libavdevice/decklink_common.h
+++ b/libavdevice/decklink_common.h
@@ -93,8 +93,8 @@ typedef struct DecklinkPacketQueue {
 struct decklink_ctx {
     /* DeckLink SDK interfaces */
     IDeckLink *dl;
-    IDeckLinkOutput *dlo;
-    IDeckLinkInput *dli;
+    IDeckLinkOutput_v14_2_1 *dlo;
+    IDeckLinkInput_v14_2_1 *dli;
     IDeckLinkConfiguration *cfg;
     IDeckLinkProfileAttributes *attr;
     decklink_output_callback *output_callback;
diff --git a/libavdevice/decklink_dec.cpp b/libavdevice/decklink_dec.cpp
index 418701e4e0c7a..28b523c8fd433 100644
--- a/libavdevice/decklink_dec.cpp
+++ b/libavdevice/decklink_dec.cpp
@@ -105,13 +105,13 @@ static VANCLineNumber vanc_line_numbers[] = {
     {bmdModeUnknown, 0, -1, -1, -1}
 };
 
-class decklink_allocator : public IDeckLinkMemoryAllocator
+class decklink_allocator : public IDeckLinkMemoryAllocator_v14_2_1
 {
 public:
         decklink_allocator(): _refs(1) { }
         virtual ~decklink_allocator() { }
 
-        // IDeckLinkMemoryAllocator methods
+        // IDeckLinkMemoryAllocator_v14_2_1 methods
         virtual HRESULT STDMETHODCALLTYPE AllocateBuffer(unsigned int bufferSize, void* *allocatedBuffer)
         {
             void *buf = av_malloc(bufferSize + AV_INPUT_BUFFER_PADDING_SIZE);
@@ -129,7 +129,15 @@ class decklink_allocator : public IDeckLinkMemoryAllocator
         virtual HRESULT STDMETHODCALLTYPE Decommit() { return S_OK; }
 
         // IUnknown methods
-        virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
+        virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) 
+        {
+            if (iid == IID_IDeckLinkMemoryAllocator_v14_2_1) { 
+                *ppv = (IDeckLinkMemoryAllocator_v14_2_1*)this; 
+                AddRef(); 
+                return S_OK; 
+            }
+            return E_NOINTERFACE; 
+        }
         virtual ULONG   STDMETHODCALLTYPE AddRef(void) { return ++_refs; }
         virtual ULONG   STDMETHODCALLTYPE Release(void)
         {
@@ -472,7 +480,7 @@ static uint8_t *get_metadata(AVFormatContext *avctx, uint16_t *buf, size_t width
 }
 
 
-static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideoInputFrame *videoFrame, int64_t pts)
+static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideoInputFrame_v14_2_1 *videoFrame, int64_t pts)
 {
     const uint8_t KLV_DID = 0x44;
     const uint8_t KLV_IN_VANC_SDID = 0x04;
@@ -574,17 +582,25 @@ static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideo
     }
 }
 
-class decklink_input_callback : public IDeckLinkInputCallback
+class decklink_input_callback : public IDeckLinkInputCallback_v14_2_1
 {
 public:
         explicit decklink_input_callback(AVFormatContext *_avctx);
         ~decklink_input_callback();
 
-        virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
+        virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv)
+        {
+            if (iid == IID_IDeckLinkInputCallback_v14_2_1) {
+                *ppv = (IDeckLinkInputCallback_v14_2_1*)this;
+                AddRef();
+                return S_OK;
+            }
+            return E_NOINTERFACE; 
+        }
         virtual ULONG STDMETHODCALLTYPE AddRef(void);
         virtual ULONG STDMETHODCALLTYPE  Release(void);
         virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags);
-        virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
+        virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame_v14_2_1*, IDeckLinkAudioInputPacket*);
 
 private:
         std::atomic<int>  _refs;
@@ -593,7 +609,7 @@ class decklink_input_callback : public IDeckLinkInputCallback
         int no_video;
         int64_t initial_video_pts;
         int64_t initial_audio_pts;
-        IDeckLinkVideoInputFrame* last_video_frame;
+        IDeckLinkVideoInputFrame_v14_2_1* last_video_frame;
 };
 
 decklink_input_callback::decklink_input_callback(AVFormatContext *_avctx) : _refs(1)
@@ -625,7 +641,7 @@ ULONG decklink_input_callback::Release(void)
     return ret;
 }
 
-static int64_t get_pkt_pts(IDeckLinkVideoInputFrame *videoFrame,
+static int64_t get_pkt_pts(IDeckLinkVideoInputFrame_v14_2_1 *videoFrame,
                            IDeckLinkAudioInputPacket *audioFrame,
                            int64_t wallclock,
                            int64_t abs_wallclock,
@@ -679,7 +695,7 @@ static int64_t get_pkt_pts(IDeckLinkVideoInputFrame *videoFrame,
     return pts;
 }
 
-static int get_bmd_timecode(AVFormatContext *avctx, AVTimecode *tc, AVRational frame_rate, BMDTimecodeFormat tc_format, IDeckLinkVideoInputFrame *videoFrame)
+static int get_bmd_timecode(AVFormatContext *avctx, AVTimecode *tc, AVRational frame_rate, BMDTimecodeFormat tc_format, IDeckLinkVideoInputFrame_v14_2_1 *videoFrame)
 {
     IDeckLinkTimecode *timecode;
     int ret = AVERROR(ENOENT);
@@ -701,7 +717,7 @@ static int get_bmd_timecode(AVFormatContext *avctx, AVTimecode *tc, AVRational f
     return ret;
 }
 
-static int get_frame_timecode(AVFormatContext *avctx, decklink_ctx *ctx, AVTimecode *tc, IDeckLinkVideoInputFrame *videoFrame)
+static int get_frame_timecode(AVFormatContext *avctx, decklink_ctx *ctx, AVTimecode *tc, IDeckLinkVideoInputFrame_v14_2_1 *videoFrame)
 {
     AVRational frame_rate = ctx->video_st->r_frame_rate;
     int ret;
@@ -726,7 +742,7 @@ static int get_frame_timecode(AVFormatContext *avctx, decklink_ctx *ctx, AVTimec
 }
 
 HRESULT decklink_input_callback::VideoInputFrameArrived(
-    IDeckLinkVideoInputFrame *videoFrame, IDeckLinkAudioInputPacket *audioFrame)
+    IDeckLinkVideoInputFrame_v14_2_1 *videoFrame, IDeckLinkAudioInputPacket *audioFrame)
 {
     void *frameBytes;
     void *audioFrameBytes;
@@ -1141,7 +1157,7 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
         goto error;
 
     /* Get input device. */
-    if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) {
+    if (ctx->dl->QueryInterface(IID_IDeckLinkInput_v14_2_1, (void **) &ctx->dli) != S_OK) {
         av_log(avctx, AV_LOG_ERROR, "Could not open input device from '%s'\n",
                avctx->url);
         ret = AVERROR(EIO);
diff --git a/libavdevice/decklink_enc.cpp b/libavdevice/decklink_enc.cpp
index cb8f91730eeb3..5bed55dc4fae6 100644
--- a/libavdevice/decklink_enc.cpp
+++ b/libavdevice/decklink_enc.cpp
@@ -48,7 +48,7 @@ extern "C" {
 #endif
 
 /* DeckLink callback class declaration */
-class decklink_frame : public IDeckLinkVideoFrame
+class decklink_frame : public IDeckLinkVideoFrame_v14_2_1
 {
 public:
     decklink_frame(struct decklink_ctx *ctx, AVFrame *avframe, AVCodecID codec_id, int height, int width) :
@@ -111,7 +111,16 @@ class decklink_frame : public IDeckLinkVideoFrame
         _ancillary->AddRef();
         return S_OK;
     }
-    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
+    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) 
+    {
+        if (iid == IID_IDeckLinkVideoFrame_v14_2_1) 
+        { 
+            *ppv = (IDeckLinkVideoFrame_v14_2_1*)this; 
+            AddRef(); 
+            return S_OK; 
+        }
+        return E_NOINTERFACE; 
+    }
     virtual ULONG   STDMETHODCALLTYPE AddRef(void)                            { return ++_refs; }
     virtual ULONG   STDMETHODCALLTYPE Release(void)
     {
@@ -138,10 +147,10 @@ class decklink_frame : public IDeckLinkVideoFrame
     std::atomic<int>  _refs;
 };
 
-class decklink_output_callback : public IDeckLinkVideoOutputCallback
+class decklink_output_callback : public IDeckLinkVideoOutputCallback_v14_2_1
 {
 public:
-    virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame *_frame, BMDOutputFrameCompletionResult result)
+    virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame_v14_2_1 *_frame, BMDOutputFrameCompletionResult result)
     {
         decklink_frame *frame = static_cast<decklink_frame *>(_frame);
         struct decklink_ctx *ctx = frame->_ctx;
@@ -159,7 +168,16 @@ class decklink_output_callback : public IDeckLinkVideoOutputCallback
         return S_OK;
     }
     virtual HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped(void)       { return S_OK; }
-    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
+    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv)
+    {
+        if (iid == IID_IDeckLinkVideoOutputCallback_v14_2_1) 
+        { 
+            *ppv = (IDeckLinkVideoOutputCallback_v14_2_1*)this; 
+            AddRef(); 
+            return S_OK; 
+        }
+        return E_NOINTERFACE; 
+    }
     virtual ULONG   STDMETHODCALLTYPE AddRef(void)                            { return 1; }
     virtual ULONG   STDMETHODCALLTYPE Release(void)                           { return 1; }
 };
@@ -739,7 +757,7 @@ static int decklink_write_video_packet(AVFormatContext *avctx, AVPacket *pkt)
         ctx->first_pts = pkt->pts;
 
     /* Schedule frame for playback. */
-    hr = ctx->dlo->ScheduleVideoFrame((class IDeckLinkVideoFrame *) frame,
+    hr = ctx->dlo->ScheduleVideoFrame((class IDeckLinkVideoFrame_v14_2_1 *) frame,
                                       pkt->pts * ctx->bmd_tb_num,
                                       ctx->bmd_tb_num, ctx->bmd_tb_den);
     /* Pass ownership to DeckLink, or release on failure */
@@ -874,7 +892,7 @@ av_cold int ff_decklink_write_header(AVFormatContext *avctx)
         return ret;
 
     /* Get output device. */
-    if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) {
+    if (ctx->dl->QueryInterface(IID_IDeckLinkOutput_v14_2_1, (void **) &ctx->dlo) != S_OK) {
         av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",
                avctx->url);
         ret = AVERROR(EIO);