avfilter/vf_thumbnail: add timeline support

[ffmpeg] / libavformat / pjsdec.c

diff --git a/libavformat/pjsdec.c b/libavformat/pjsdec.c
index bb587b569a1b7362a33578772c3bfb48fd0d1254..8a5cc04f8411e4370b64de842497c92deaeab8b5 100644 (file)
--- a/libavformat/pjsdec.c
+++ b/libavformat/pjsdec.c
@@ -33,7 +33,7 @@ typedef struct {
     FFDemuxSubtitlesQueue q;
 } PJSContext;
 
-static int pjs_probe(AVProbeData *p)
+static int pjs_probe(const AVProbeData *p)
 {
     char c;
     int64_t start, end;
@@ -55,6 +55,8 @@ static int64_t read_ts(char **line, int *duration)
     if (sscanf(*line, "%"SCNd64",%"SCNd64, &start, &end) == 2) {
         *line += strcspn(*line, "\"");
         *line += !!**line;
+        if (end < start || end - (uint64_t)start > INT_MAX)
+            return AV_NOPTS_VALUE;
         *duration = end - start;
         return start;
     }