diff --git a/media/libvpx/libvpx/vp8/vp8_cx_iface.c b/media/libvpx/libvpx/vp8/vp8_cx_iface.c
--- a/media/libvpx/libvpx/vp8/vp8_cx_iface.c
+++ b/media/libvpx/libvpx/vp8/vp8_cx_iface.c
@@ -1020,14 +1020,23 @@
       dst_end_time_stamp =
           pts_end * ctx->timestamp_ratio.num / ctx->timestamp_ratio.den;
 
       res = image2yuvconfig(img, &sd);
 
-      if (vp8_receive_raw_frame(ctx->cpi, ctx->next_frame_flag | lib_flags, &sd,
-                                dst_time_stamp, dst_end_time_stamp)) {
-        VP8_COMP *cpi = (VP8_COMP *)ctx->cpi;
-        res = update_error_state(ctx, &cpi->common.error);
+      if (sd.y_width != ctx->cfg.g_w || sd.y_height != ctx->cfg.g_h) {
+        /* from vpx_encoder.h for g_w/g_h:
+           "Note that the frames passed as input to the encoder must have this
+           resolution"
+        */
+        ctx->base.err_detail = "Invalid input frame resolution";
+        res = VPX_CODEC_INVALID_PARAM;
+      } else {
+        if (vp8_receive_raw_frame(ctx->cpi, ctx->next_frame_flag | lib_flags,
+                                  &sd, dst_time_stamp, dst_end_time_stamp)) {
+          VP8_COMP *cpi = (VP8_COMP *)ctx->cpi;
+          res = update_error_state(ctx, &cpi->common.error);
+        }
       }
 
       /* reset for next frame */
       ctx->next_frame_flag = 0;
     }
diff --git a/media/libvpx/libvpx/vp9/vp9_cx_iface.c b/media/libvpx/libvpx/vp9/vp9_cx_iface.c
--- a/media/libvpx/libvpx/vp9/vp9_cx_iface.c
+++ b/media/libvpx/libvpx/vp9/vp9_cx_iface.c
@@ -1476,17 +1476,26 @@
       }
       const int64_t dst_end_time_stamp =
           timebase_units_to_ticks(timebase_in_ts, pts_end);
       res = image2yuvconfig(img, &sd);
 
-      // Store the original flags in to the frame buffer. Will extract the
-      // key frame flag when we actually encode this frame.
-      if (vp9_receive_raw_frame(cpi, flags | ctx->next_frame_flags, &sd,
+      if (sd.y_width != ctx->cfg.g_w || sd.y_height != ctx->cfg.g_h) {
+        /* from vpx_encoder.h for g_w/g_h:
+           "Note that the frames passed as input to the encoder must have this
+           resolution"
+        */
+        ctx->base.err_detail = "Invalid input frame resolution";
+        res = VPX_CODEC_INVALID_PARAM;
+      } else {
+        // Store the original flags in to the frame buffer. Will extract the
+        // key frame flag when we actually encode this frame.
+        if (vp9_receive_raw_frame(cpi, flags | ctx->next_frame_flags, &sd,
                                 dst_time_stamp, dst_end_time_stamp)) {
-        res = update_error_state(ctx, &cpi->common.error);
+          res = update_error_state(ctx, &cpi->common.error);
+        }
+        ctx->next_frame_flags = 0;
       }
-      ctx->next_frame_flags = 0;
     }
 
     cx_data = ctx->cx_data;
     cx_data_sz = ctx->cx_data_sz;
 
diff --git a/media/libvpx/libvpx/vpx_ports/aarch64_cpudetect.c b/media/libvpx/libvpx/vpx_ports/aarch64_cpudetect.c
--- a/media/libvpx/libvpx/vpx_ports/aarch64_cpudetect.c
+++ b/media/libvpx/libvpx/vpx_ports/aarch64_cpudetect.c
@@ -14,11 +14,11 @@
 
 #if defined(__APPLE__)
 #include <sys/sysctl.h>
 #endif
 
-#if !CONFIG_RUNTIME_CPU_DETECT
+#if !CONFIG_RUNTIME_CPU_DETECT || defined(__OpenBSD__)
 
 static int arm_get_cpu_caps(void) {
   // This function should actually be a no-op. There is no way to adjust any of
   // these because the RTCD tables do not exist: the functions are called
   // statically.
@@ -27,11 +27,11 @@
   flags |= HAS_NEON;
 #endif  // HAVE_NEON
   return flags;
 }
 
-#elif defined(__APPLE__)  // end !CONFIG_RUNTIME_CPU_DETECT
+#elif defined(__APPLE__)  // end !CONFIG_RUNTIME_CPU_DETECT || defined(__OpenBSD__)
 
 // sysctlbyname() parameter documentation for instruction set characteristics:
 // https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_instruction_set_characteristics
 static INLINE int64_t have_feature(const char *feature) {
   int64_t feature_present = 0;