[FFmpeg-devel] [PATCH 1/2] avcodec/mpegvideo_enc: Check FLV1 resolution limits

Michael Niedermayer michael at niedermayer.cc
Wed Jan 8 06:13:36 EET 2025


Found-by: Elias Myllymäki <elias.myllymaki04p at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavcodec/mpegvideo_enc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index c5f20c2d855..09df2f52a6c 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -567,6 +567,12 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
         av_log(avctx, AV_LOG_ERROR, "H.263 does not support resolutions above 2048x1152\n");
         return AVERROR(EINVAL);
     }
+    if (s->codec_id == AV_CODEC_ID_FLV1 &&
+        (avctx->width  > 65535 ||
+         avctx->height > 65535 )) {
+        av_log(avctx, AV_LOG_ERROR, "FLV does not support resolutions above 16bit\n");
+        return AVERROR(EINVAL);
+    }
     if ((s->codec_id == AV_CODEC_ID_H263  ||
          s->codec_id == AV_CODEC_ID_H263P ||
          s->codec_id == AV_CODEC_ID_RV20) &&
-- 
2.47.0



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