This enables having multiple tracks of the same type which would be treated as different things by the media server (as opposed to different bit rate versions of the same track). According to the smooth streaming specification, just setting the systemLanguage tag is not enough to note that a track with the same attributes differs from another one. --- libavformat/movenc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index a58b6a4..a286210 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -3645,6 +3645,7 @@ static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov, AVFormat MOVTrack *track = &mov->tracks[i]; const char *type; int track_id = track->track_id; + char track_name_buf[32] = { 0 }; AVStream *st = track->st; AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0); @@ -3670,6 +3671,23 @@ static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov, AVFormat param_write_int(pb, "systemBitrate", manifest_bit_rate); param_write_int(pb, "trackID", track_id); param_write_string(pb, "systemLanguage", lang ? lang->value : "und"); + + /* Build track name piece by piece: */ + /* 1. track type */ + av_strlcat(track_name_buf, type, sizeof(track_name_buf)); + /* 2. track language, if available */ + if (lang) + av_strlcatf(track_name_buf, sizeof(track_name_buf), + "_%s", lang->value); + /* 3. special type suffix */ + /* "_cc" = closed captions, "_ad" = audio_description */ + if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) + av_strlcat(track_name_buf, "_cc", sizeof(track_name_buf)); + else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED) + av_strlcat(track_name_buf, "_ad", sizeof(track_name_buf)); + + param_write_string(pb, "trackName", track_name_buf); + if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) { if (track->par->codec_id == AV_CODEC_ID_H264) { uint8_t *ptr; -- 2.9.3 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel