--- a/dom/media/webm/WebMDemuxer.cpp
+++ b/dom/media/webm/WebMDemuxer.cpp
@@ -577,21 +577,17 @@ WebMDemuxer::GetNextPacket(TrackInfo::Tr
       }
       isKeyframe = si.is_kf;
       if (isKeyframe) {
         // We only look for resolution changes on keyframes for both VP8 and
         // VP9. Other resolution changes are invalid.
         if (mLastSeenFrameWidth.isSome() && mLastSeenFrameHeight.isSome() &&
             (si.w != mLastSeenFrameWidth.value() ||
              si.h != mLastSeenFrameHeight.value())) {
-          // We ignore cropping information on resizes during streams.
-          // Cropping alone is rare, and we do not consider cropping to
-          // still be valid after a resolution change
-          mInfo.mVideo.mImage = mInfo.mVideo.mDisplay = nsIntSize(si.w, si.h);
-          mInfo.mVideo.SetImageRect(nsIntRect(0, 0, si.w, si.h));
+          mInfo.mVideo.mDisplay = nsIntSize(si.w, si.h);
           mSharedVideoTrackInfo = new SharedTrackInfo(mInfo.mVideo, ++sStreamSourceID);
         }
         mLastSeenFrameWidth = Some(si.w);
         mLastSeenFrameHeight = Some(si.h);
       }
     }
 
     WEBM_DEBUG("push sample tstamp: %ld next_tstamp: %ld length: %ld kf: %d",