+static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)
+{
+ int tag = track->enc->codec_tag;
+ int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
+ AVStream *st = track->st;
+ int rate = av_q2d(find_fps(s, st));
+
+ if (!tag)
+ tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
+
+ if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P10) {
+ if (track->enc->width == 960 && track->enc->height == 720) {
+ if (!interlaced) {
+ if (rate == 24) tag = MKTAG('a','i','5','p');
+ else if (rate == 25) tag = MKTAG('a','i','5','q');
+ else if (rate == 30) tag = MKTAG('a','i','5','p');
+ else if (rate == 50) tag = MKTAG('a','i','5','q');
+ else if (rate == 60) tag = MKTAG('a','i','5','p');
+ }
+ } else if (track->enc->width == 1440 && track->enc->height == 1080) {
+ if (!interlaced) {
+ if (rate == 24) tag = MKTAG('a','i','5','3');
+ else if (rate == 25) tag = MKTAG('a','i','5','2');
+ else if (rate == 30) tag = MKTAG('a','i','5','3');
+ } else {
+ if (rate == 50) tag = MKTAG('a','i','5','5');
+ else if (rate == 60) tag = MKTAG('a','i','5','6');
+ }
+ }
+ } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P10) {
+ if (track->enc->width == 1280 && track->enc->height == 720) {
+ if (!interlaced) {
+ if (rate == 24) tag = MKTAG('a','i','1','p');
+ else if (rate == 25) tag = MKTAG('a','i','1','q');
+ else if (rate == 30) tag = MKTAG('a','i','1','p');
+ else if (rate == 50) tag = MKTAG('a','i','1','q');
+ else if (rate == 60) tag = MKTAG('a','i','1','p');
+ }
+ } else if (track->enc->width == 1920 && track->enc->height == 1080) {
+ if (!interlaced) {
+ if (rate == 24) tag = MKTAG('a','i','1','3');
+ else if (rate == 25) tag = MKTAG('a','i','1','2');
+ else if (rate == 30) tag = MKTAG('a','i','1','3');
+ } else {
+ if (rate == 25) tag = MKTAG('a','i','1','5');
+ else if (rate == 50) tag = MKTAG('a','i','1','5');
+ else if (rate == 60) tag = MKTAG('a','i','1','6');
+ }
+ }
+ }
+
+ return tag;
+}
+