diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c
index e9d86c18d8..bbbf7017ee 100644
--- a/libavformat/segafilm.c
+++ b/libavformat/segafilm.c
@@ -89,6 +89,7 @@ static int film_read_header(AVFormatContext *s)
     int i, ret;
     unsigned int data_offset;
     unsigned int audio_frame_counter;
+    unsigned int video_frame_counter;
 
     film->sample_table = NULL;
 
@@ -212,7 +213,7 @@ static int film_read_header(AVFormatContext *s)
             avpriv_set_pts_info(st, 64, 1, film->audio_samplerate);
     }
 
-    audio_frame_counter = 0;
+    audio_frame_counter = video_frame_counter = 0;
     for (i = 0; i < film->sample_count; i++) {
         /* load the next sample record and transfer it to an internal struct */
         if (avio_read(pb, scratch, 16) != 16) {
@@ -240,6 +241,7 @@ 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;
+            video_frame_counter++;
             av_add_index_entry(s->streams[film->video_stream_index],
                                film->sample_table[i].sample_offset,
                                film->sample_table[i].pts,
@@ -248,6 +250,12 @@ static int film_read_header(AVFormatContext *s)
         }
     }
 
+    if (film->audio_type)
+        s->streams[film->audio_stream_index]->duration = audio_frame_counter;
+
+    if (film->video_type)
+        s->streams[film->video_stream_index]->duration = video_frame_counter;
+
     film->current_sample = 0;
 
     return 0;