Default to -y for 1N_transcode example

Signed-off-by: James P. Ketrenos <james.p.ketrenos@intel.com>

assets/cmd_1N_transcode

@@ -122,6 +122,7 @@ OUT_FILE="${arguments[1]}"
     -filter_complex "split=2[s1][s2]; \
                      [s1]scale_qsv=1280:720[o1]; \
                      [s2]vpp_qsv=framerate=60[o2]" \
+    -y \
     -map [o1] -c:v h264_qsv -b:v 5M /media/"${OUT_FILE}-5M.mp4" \
     -map [o2] -c:v h264_qsv -b:v 4M /media/"${OUT_FILE}-4M60FPS.h264"