[FFmpeg-cvslog] avformat/mpegts: Increase pcr_incr width to 64bit

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Dec 19 00:22:01 2020 +0100| [ef7b117b7be8a81d6b245cadf096cbe4b1a12987] | committer: Michael Niedermayer

avformat/mpegts: Increase pcr_incr width to 64bit

Fixes: division by zero
Fixes: 26459/clusterfuzz-testcase-minimized-ffmpeg_dem_MPEGTSRAW_fuzzer-5666350112178176
Fixes: 28154/clusterfuzz-testcase-minimized-ffmpeg_dem_MPEGTSRAW_fuzzer-5195728439476224

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Marton Balint <cus at passwd.hu>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ef7b117b7be8a81d6b245cadf096cbe4b1a12987
---

 libavformat/mpegts.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 7549fc91c9..1122455f66 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -135,7 +135,7 @@ struct MpegTSContext {
     int fix_teletext_pts;
 
     int64_t cur_pcr;    /**< used to estimate the exact PCR */
-    int pcr_incr;       /**< used to estimate the exact PCR */
+    int64_t pcr_incr;   /**< used to estimate the exact PCR */
 
     /* data needed to handle file based ts */
     /** stop parsing loop */