diff --git a/av1/encoder/encode_strategy.c b/av1/encoder/encode_strategy.c
index 8fdd282..e9bc75a 100644
--- a/av1/encoder/encode_strategy.c
+++ b/av1/encoder/encode_strategy.c
@@ -1302,6 +1302,8 @@
 #endif
   }
 
+  // Save unfiltered source.
+  cpi->unfiltered_source = frame_input.source;
 #if CONFIG_REALTIME_ONLY
   if (av1_encode(cpi, dest, &frame_input, &frame_params, &frame_results) !=
       AOM_CODEC_OK) {
diff --git a/av1/encoder/encoder.c b/av1/encoder/encoder.c
index 5bc2155..5bf41f8 100644
--- a/av1/encoder/encoder.c
+++ b/av1/encoder/encoder.c
@@ -3828,12 +3828,12 @@
 
   // Estimate if the source frame is screen content, based on the portion of
   // blocks that have few luma colors.
-  const uint8_t *src = cpi->source->y_buffer;
+  const uint8_t *src = cpi->unfiltered_source->y_buffer;
   assert(src != NULL);
-  const int use_hbd = cpi->source->flags & YV12_FLAG_HIGHBITDEPTH;
-  const int stride = cpi->source->y_stride;
-  const int width = cpi->source->y_width;
-  const int height = cpi->source->y_height;
+  const int use_hbd = cpi->unfiltered_source->flags & YV12_FLAG_HIGHBITDEPTH;
+  const int stride = cpi->unfiltered_source->y_stride;
+  const int width = cpi->unfiltered_source->y_width;
+  const int height = cpi->unfiltered_source->y_height;
   const int bd = cm->seq_params.bit_depth;
   const int blk_w = 16;
   const int blk_h = 16;
diff --git a/av1/encoder/encoder.h b/av1/encoder/encoder.h
index 8c8474a..18749e5 100644
--- a/av1/encoder/encoder.h
+++ b/av1/encoder/encoder.h
@@ -771,6 +771,7 @@
   YV12_BUFFER_CONFIG scaled_source;
   YV12_BUFFER_CONFIG *unscaled_last_source;
   YV12_BUFFER_CONFIG scaled_last_source;
+  YV12_BUFFER_CONFIG *unfiltered_source;
 
   uint8_t tpl_stats_block_mis_log2;  // block granularity of tpl score storage
   TplDepFrame tpl_stats_buffer[MAX_LENGTH_TPL_FRAME_STATS];