@@ -239,6 +239,11 @@ static int film_read_header(AVFormatContext *s)

             film->sample_table[i].stream = film->video_stream_index;

             film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;

             film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1;

+            av_add_index_entry(s->streams[film->video_stream_index],

+                               film->sample_table[i].sample_offset,

+                               film->sample_table[i].pts,

+                               film->sample_table[i].sample_size, 0,

+                               film->sample_table[i].keyframe);

         }

     }

@@ -279,6 +284,21 @@ static int film_read_packet(AVFormatContext *s,

     return ret;

 }

+static int film_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)

+{

+    FilmDemuxContext *film = s->priv_data;

+    AVStream *st = s->streams[stream_index];

+    int index = av_index_search_timestamp(st, timestamp, flags);

+    if (index < 0)

+        return -1;

+    if (avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET) < 0)

+        return -1;

+

+    film->current_sample = index;

+

+    return 0;

+}

+

 AVInputFormat ff_segafilm_demuxer = {

     .name           = "film_cpk",

     .long_name      = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),

@@ -287,4 +307,5 @@ AVInputFormat ff_segafilm_demuxer = {

     .read_header    = film_read_header,

     .read_packet    = film_read_packet,

     .read_close     = film_read_close,

+    .read_seek      = film_read_seek,

 };