Commit 744cab1a authored by John Stebbins's avatar John Stebbins

ffmpeg: fix seeking in mkv > 2GB

maybe fixes
parent caa02925
From c294f38c91f440880ffd28fda0eeb1154431ab7e Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <>
Date: Sat, 17 Aug 2019 02:27:51 +0200
Subject: [PATCH] avformat/matroskadec: Fix seeking
matroska_reset_status (a function that is used during seeking (among
other things)) used an int for the return value of avio_seek which
returns an int64_t. Checking the return value then indicated an error
even though the seek was successfull for targets in the range of
2GB-4GB, 6GB-8GB, ... This error implied that the status hasn't been
reset and in particular, the old level was still considered to be in
force, so that ebml_parse returned errors because the newly parsed
elements were of course not contained in the previously active and still
wrongly considered active master element any more.
Addresses ticket #8084.
Signed-off-by: Andreas Rheinhardt <>
Signed-off-by: James Almer <>
libavformat/matroskadec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 4e20f15792..1ea9b807e6 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -757,7 +757,7 @@ static int matroska_reset_status(MatroskaDemuxContext *matroska,
uint32_t id, int64_t position)
if (position >= 0) {
- int err = avio_seek(matroska->ctx->pb, position, SEEK_SET);
+ int64_t err = avio_seek(matroska->ctx->pb, position, SEEK_SET);
if (err < 0)
return err;
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment