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| author | Timo Teräs <timo.teras@iki.fi> | 2015-11-28 08:27:39 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-03 17:43:30 +0100 |
| commit | 64f7db554ee83846f207e82a08946a6a5a6acfe2 (patch) | |
| tree | 707a18bd87f416dcd9a458e659b528228660409b | |
| parent | fff7f2df31e942edd33287a3570466ebb9f91811 (diff) | |
| download | ffmpeg-64f7db554ee83846f207e82a08946a6a5a6acfe2.tar.gz | |
mpegencts: Fix overflow in cbr mode period calculations
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>
| -rw-r--r-- | libavformat/mpegtsenc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c index 468bad497f..8591e8cde6 100644 --- a/libavformat/mpegtsenc.c +++ b/libavformat/mpegtsenc.c @@ -852,11 +852,11 @@ 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) |