electronicarts: parse the framerate for cmv video.

libavformat/electronicarts.c

@@ -283,6 +283,20 @@ static int process_video_header_vp6(AVFormatContext *s)
     return 1;
 }
 
+static int process_video_header_cmv(AVFormatContext *s)
+{
+    EaDemuxContext *ea = s->priv_data;
+    int fps;
+
+    avio_skip(s->pb, 10);
+    fps = avio_rl16(s->pb);
+    if (fps)
+        ea->time_base = (AVRational){1, fps};
+    ea->video_codec = CODEC_ID_CMV;
+
+    return 0;
+}
+
 /*
  * Process EA file header
  * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
@@ -330,8 +344,7 @@ static int process_ea_header(AVFormatContext *s) {
                 break;
 
             case MVIh_TAG :
-                ea->video_codec = CODEC_ID_CMV;
-                ea->time_base = (AVRational){0,0};
+                err = process_video_header_cmv(s);
                 break;
 
             case kVGT_TAG: