mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/mpeg4videodec: also for empty partitioned slices
Fixes assertion failure
Fixes: id_acf3e47f864e1ee4c7b86c0653e0ff31e5bde56e.m4v
Found-by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 70f13abb4f
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -882,7 +882,7 @@ int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx)
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const int part_a_end = s->pict_type == AV_PICTURE_TYPE_I ? (ER_DC_END | ER_MV_END) : ER_MV_END;
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mb_num = mpeg4_decode_partition_a(ctx);
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if (mb_num < 0) {
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if (mb_num <= 0) {
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ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
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s->mb_x, s->mb_y, part_a_error);
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return -1;
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