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avformat/mpegenc: check, warn and clip muxrate to syntactical possible values

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer
2013-09-29 17:02:57 +02:00
parent 8c1253c934
commit f2eb474a5a
1 changed files with 4 additions and 0 deletions
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4
libavformat/mpegenc.c
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@@ -428,6 +428,10 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
bitrate += bitrate / 20; bitrate += bitrate / 20;
bitrate += 10000; bitrate += 10000;
s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50); s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50);
if (s->mux_rate >= (1<<22)) {
av_log(ctx, AV_LOG_WARNING, "mux rate %d is too large\n", s->mux_rate);
s->mux_rate = (1<<22) - 1;
}
} }
if (s->is_vcd) { if (s->is_vcd) {