RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-01-25 08:43:16 +00:00
Code Issues Projects Releases Wiki Activity

mpegencts: Fix overflow in cbr mode period calculations

Browse Source 
ts->mux_rate is int (signed 32-bit) type. The period calculations
will start to overflow when mux_rate > 5mbps. This fixes overflows
by converting first to 64-bit type.

Fixes #5044.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 64f7db554e)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Timo Teräs 2015-11-28 08:27:39 +02:00 committed by Michael Niedermayer
parent c8ca4b3275
commit cfd1bc5810
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavformat/mpegtsenc.c
View File

@ -739,11 +739,11 @@ static int mpegts_write_header(AVFormatContext *s)
ts_st = pcr_st->priv_data;
if (ts->mux_rate > 1) {
service->pcr_packet_period = (ts->mux_rate * ts->pcr_period) /
service->pcr_packet_period = (int64_t)ts->mux_rate * ts->pcr_period /
(TS_PACKET_SIZE * 8 * 1000);
ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) /
ts->sdt_packet_period = (int64_t)ts->mux_rate * SDT_RETRANS_TIME /
(TS_PACKET_SIZE * 8 * 1000);
ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) /
ts->pat_packet_period = (int64_t)ts->mux_rate * PAT_RETRANS_TIME /
(TS_PACKET_SIZE * 8 * 1000);
if (ts->copyts < 1)