avformat/movenc: set XDCAM codec tag correctly

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/movenc.c

@@ -897,6 +897,65 @@ static AVRational find_fps(AVFormatContext *s, AVStream *st)
     return rate;
 }
 
+static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)
+{
+    int tag = MKTAG('m', '2', 'v', '1'); //fallback tag
+    int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
+    AVStream *st = track->st;
+    int rate = av_q2d(find_fps(s, st));
+
+    if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) {
+        if (track->enc->width == 1280 && track->enc->height == 720) {
+            if (!interlaced) {
+                if      (rate == 24) tag = MKTAG('x','d','v','4');
+                else if (rate == 25) tag = MKTAG('x','d','v','5');
+                else if (rate == 30) tag = MKTAG('x','d','v','1');
+                else if (rate == 50) tag = MKTAG('x','d','v','a');
+                else if (rate == 60) tag = MKTAG('x','d','v','9');
+            }
+        } else if (track->enc->width == 1440 && track->enc->height == 1080) {
+            if (!interlaced) {
+                if      (rate == 24) tag = MKTAG('x','d','v','6');
+                else if (rate == 25) tag = MKTAG('x','d','v','7');
+                else if (rate == 30) tag = MKTAG('x','d','v','8');
+            } else {
+                if      (rate == 25) tag = MKTAG('x','d','v','3');
+                else if (rate == 30) tag = MKTAG('x','d','v','2');
+            }
+        } else if (track->enc->width == 1920 && track->enc->height == 1080) {
+            if (!interlaced) {
+                if      (rate == 24) tag = MKTAG('x','d','v','d');
+                else if (rate == 25) tag = MKTAG('x','d','v','e');
+                else if (rate == 30) tag = MKTAG('x','d','v','f');
+            } else {
+                if      (rate == 25) tag = MKTAG('x','d','v','c');
+                else if (rate == 30) tag = MKTAG('x','d','v','b');
+            }
+        }
+    } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
+        if (track->enc->width == 1280 && track->enc->height == 720) {
+            if (!interlaced) {
+                if      (rate == 24) tag = MKTAG('x','d','5','4');
+                else if (rate == 25) tag = MKTAG('x','d','5','5');
+                else if (rate == 30) tag = MKTAG('x','d','5','1');
+                else if (rate == 50) tag = MKTAG('x','d','5','a');
+                else if (rate == 60) tag = MKTAG('x','d','5','9');
+            }
+        } else if (track->enc->width == 1920 && track->enc->height == 1080) {
+            if (!interlaced) {
+                if      (rate == 24) tag = MKTAG('x','d','5','d');
+                else if (rate == 25) tag = MKTAG('x','d','5','e');
+                else if (rate == 30) tag = MKTAG('x','d','5','f');
+            } else {
+                if      (rate == 25) tag = MKTAG('x','d','5','c');
+                else if (rate == 30) tag = MKTAG('x','d','5','b');
+            }
+        }
+    }
+
+    return tag;
+}
+
 static const struct {
     enum AVPixelFormat pix_fmt;
     uint32_t tag;
@@ -944,11 +1003,14 @@ static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
                  (track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
                   track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
                   track->enc->codec_id == AV_CODEC_ID_H263 ||
+                  track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
                   av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
         if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
             tag = mov_get_dv_codec_tag(s, track);
         else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
             tag = mov_get_rawvideo_codec_tag(s, track);
+        else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO)
+            tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
         else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
             tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->enc->codec_id);
             if (!tag) { // if no mac fcc found, try with Microsoft tags