Merge commit 'e8030714'

* commit 'e8030714':
  yuv4mpegenc: Use AV_CEIL_RSHIFT where needed
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

libavformat/yuv4mpegenc.c

@@ -209,6 +209,7 @@ static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
         // Adjust for smaller Cb and Cr planes
         av_pix_fmt_get_chroma_sub_sample(st->codec->pix_fmt, &h_chroma_shift,
                                          &v_chroma_shift);
+        // Shift right, rounding up
         width  = AV_CEIL_RSHIFT(width,  h_chroma_shift);
         height = AV_CEIL_RSHIFT(height, v_chroma_shift);