[FFmpeg-devel] [PATCH 1/2] lavf/utils: ignore outlier subtitle and data stream end times as well

[Rodger Combs]

---
 libavformat/utils.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 3acb260..d19cc5e 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2524,7 +2524,7 @@ static int has_duration(AVFormatContext *ic)
  */
 static void update_stream_timings(AVFormatContext *ic)
 {
-    int64_t start_time, start_time1, start_time_text, end_time, end_time1;
+    int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
     int64_t duration, duration1, filesize;
     int i;
     AVStream *st;
@@ -2533,6 +2533,7 @@ static void update_stream_timings(AVFormatContext *ic)
     start_time = INT64_MAX;
     start_time_text = INT64_MAX;
     end_time   = INT64_MIN;
+    end_time_text   = INT64_MIN;
     duration   = INT64_MIN;
     for (i = 0; i < ic->nb_streams; i++) {
         st = ic->streams[i];
@@ -2549,7 +2550,10 @@ static void update_stream_timings(AVFormatContext *ic)
                                          AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
             if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
                 end_time1 += start_time1;
-                end_time = FFMAX(end_time, end_time1);
+                if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
+                    end_time_text = FFMAX(end_time_text, end_time1);
+                else
+                    end_time = FFMAX(end_time, end_time1);
             }
             for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
                 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
@@ -2569,6 +2573,12 @@ static void update_stream_timings(AVFormatContext *ic)
     else if (start_time > start_time_text)
         av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
 
+    if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - end_time < AV_TIME_BASE)) {
+        end_time = end_time_text;
+    } else if (end_time < end_time_text) {
+        av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
+    }
+
     if (start_time != INT64_MAX) {
         ic->start_time = start_time;
         if (end_time != INT64_MIN) {
-- 
2.10.0