[FFmpeg-devel] [PATCH/RFC]lavf/avidec: Do not fail for very large idx1 tags

[Carl Eugen Hoyos]

Hi!

Attached patch fixes the file mentioned in github pull request 197, 
it can be played with MPlayer, vlc, xine and totem.

Please comment, Carl Eugen
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From 646a765749e08bb48f74488ad9f539cbc736673c Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <cehoyos at ag.or.at>
Date: Mon, 17 Oct 2016 18:25:48 +0200
Subject: [PATCH] lavf/avidec: Do not fail for very large idx1 tags.

Fixes demuxing the sample file from github pull request 197,
the size of its idx1 tag is 6171936 bytes, followed by a JUNK
tag of 9505704 bytes.
---
 libavformat/avidec.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index 2c81267..b291625 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -993,6 +993,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 avi->movi_end  = avi->fsize;
                 goto end_of_header;
             }
+        /* Do not fail for very large idx1 tags */
+        case MKTAG('i', 'd', 'x', '1'):
             /* skip tag */
             size += (size & 1);
             avio_skip(pb, size);
-- 
1.7.10.4