diff --git a/services/capture/deltacast-bridge/main.c b/services/capture/deltacast-bridge/main.c
index 829f4bf..7adfaa9 100644
--- a/services/capture/deltacast-bridge/main.c
+++ b/services/capture/deltacast-bridge/main.c
@@ -320,6 +320,13 @@ static void *video_thread(void *arg) {
                 BYTE  *buf = NULL;
                 ULONG  sz  = 0;
                 if (VHD_GetSlotBuffer(slot, VHD_SDI_BT_VIDEO, &buf, &sz) == VHDERR_NOERROR) {
+                    ULONG expected = (ULONG)ps->vi.width * (ULONG)ps->vi.height * 2;
+                    if (sz != expected) {
+                        fprintf(stderr, "[video:%u] WARN: slot sz=%lu != expected %lu (w=%d h=%d) -- packing mismatch; skipping frame\n",
+                                ps->port, sz, expected, ps->vi.width, ps->vi.height);
+                        VHD_UnlockSlotHandle(slot);
+                        continue;
+                    }
                     if (write_all(fd, buf, sz) < 0) {
                         /* EPIPE: sidecar died (session stop/restart).
                          * Break to outer loop — reopen for next session. */
@@ -568,6 +575,10 @@ int main(int argc, char *argv[]) {
         VHD_SetStreamProperty(vs, VHD_SDI_SP_CLOCK_SYSTEM,        p->clock_div);
         VHD_SetStreamProperty(vs, VHD_CORE_SP_TRANSFER_SCHEME,    VHD_TRANSFER_SLAVED);
         VHD_SetStreamProperty(vs, VHD_CORE_SP_BUFFERQUEUE_DEPTH,  8);
+        /* Pin to tightly-packed 8-bit UYVY. Relying on SDK default caused
+         * the board to deliver frames whose size != width*height*2,
+         * producing rolled/sheared ("bouncing and bending") video. */
+        VHD_SetStreamProperty(vs, VHD_CORE_SP_BUFFER_PACKING,     VHD_BUFPACK_VIDEO_YUV422_8);
         p->video_stream = vs;
 
         if (VHD_StartStream(vs) != VHDERR_NOERROR) {