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-rw-r--r--libavformat/mpegts.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 67e94fb39e..cd881d8130 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -1454,9 +1454,7 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
if (st->codec->extradata_size == 4 && memcmp(st->codec->extradata, *pp, 4))
avpriv_request_sample(fc, "DVB sub with multiple IDs");
} else {
- st->codec->extradata = av_malloc(4 + FF_INPUT_BUFFER_PADDING_SIZE);
- if (st->codec->extradata) {
- st->codec->extradata_size = 4;
+ if (!ff_alloc_extradata(st->codec, 4)) {
memcpy(st->codec->extradata, *pp, 4);
}
}