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-rw-r--r--libavcodec/mpegvideo_enc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index ab4fb32bed..d572b859a0 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -496,6 +496,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
}
}
+ if (avctx->slices > 1 &&
+ (avctx->codec_id == AV_CODEC_ID_FLV1 || avctx->codec_id == AV_CODEC_ID_H261)) {
+ av_log(avctx, AV_LOG_ERROR, "Multiple slices are not supported by this codec\n");
+ return AVERROR(EINVAL);
+ }
+
if (s->avctx->thread_count > 1 &&
s->codec_id != AV_CODEC_ID_MPEG4 &&
s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&