avformat/isom: use more of the existing channel layout bitmap defines

Signed-off-by: James Almer <jamrial@gmail.com>

libavformat/isom.c

@@ -404,12 +404,12 @@ static const MovChannelLayout mov_channel_layout[] = {
     { AV_CH_LAYOUT_7POINT1,                      (128<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_C
     { AV_CH_LAYOUT_7POINT1_WIDE,                 (126<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_A
     { AV_CH_LAYOUT_5POINT1_BACK|AV_CH_LAYOUT_STEREO_DOWNMIX, (130<<16) | 8}, // kCAFChannelLayoutTag_SMPTE_DTV
-    { AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,   (133<<16) | 3}, // kCAFChannelLayoutTag_DVD_4
+    { AV_CH_LAYOUT_2POINT1,                      (133<<16) | 3}, // kCAFChannelLayoutTag_DVD_4
     { AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY,      (134<<16) | 4}, // kCAFChannelLayoutTag_DVD_5
     { AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY,     (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6
     { AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,      (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6
-    { AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY, (136<<16) | 4}, // kCAFChannelLayoutTag_DVD_10
-    { AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,  (137<<16) | 5}, // kCAFChannelLayoutTag_DVD_11
+    { AV_CH_LAYOUT_3POINT1,                      (136<<16) | 4}, // kCAFChannelLayoutTag_DVD_10
+    { AV_CH_LAYOUT_4POINT1,                      (137<<16) | 5}, // kCAFChannelLayoutTag_DVD_11
     { 0, 0},
 };