diff options
| -rw-r--r-- | libavformat/matroskaenc.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index ba59a7ffdc..39da238ae0 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -1420,7 +1420,8 @@ static int mkv_write_chapters(AVFormatContext *s) } chapteratom = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERATOM, 0); - put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERUID, c->id + mkv->chapter_id_offset); + put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERUID, + (uint32_t)c->id + (uint64_t)mkv->chapter_id_offset); put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart); put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend); if (mkv->mode != MODE_WEBM) { @@ -1477,7 +1478,7 @@ static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t) } static int mkv_write_tag_targets(AVFormatContext *s, uint32_t elementid, - unsigned int uid, ebml_master *tag) + uint64_t uid, ebml_master *tag) { AVIOContext *pb; MatroskaMuxContext *mkv = s->priv_data; @@ -1516,7 +1517,7 @@ static int mkv_check_tag_name(const char *name, uint32_t elementid) } static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, uint32_t elementid, - unsigned int uid) + uint64_t uid) { MatroskaMuxContext *mkv = s->priv_data; ebml_master tag; @@ -1610,7 +1611,8 @@ static int mkv_write_tags(AVFormatContext *s) if (!mkv_check_tag(ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID)) continue; - ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, ch->id + mkv->chapter_id_offset); + ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, + (uint32_t)ch->id + (uint64_t)mkv->chapter_id_offset); if (ret < 0) return ret; } @@ -1880,7 +1882,10 @@ static int mkv_write_header(AVFormatContext *s) return ret; for (i = 0; i < s->nb_chapters; i++) - mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id); + if (!s->chapters[i]->id) { + mkv->chapter_id_offset = 1; + break; + } ret = mkv_write_chapters(s); if (ret < 0) |