From d401ba6b3d86091dff2fae326c610f0120ee8853 Mon Sep 17 00:00:00 2001 From: Carl Eugen Hoyos Date: Sun, 11 Feb 2018 20:41:32 +0100 Subject: [PATCH] lavf/matroskaenc: Force the minimum value for -reserve_index_space to 2. Fixes an assertion failure: Assertion size >= 2 failed at libavformat/matroskaenc.c:298 --- libavformat/matroskaenc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index f22c2ab70c..5950b4de44 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -2001,6 +2001,8 @@ static int mkv_write_header(AVFormatContext *s) } if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && mkv->reserve_cues_space) { mkv->cues_pos = avio_tell(pb); + if (mkv->reserve_cues_space == 1) + mkv->reserve_cues_space++; put_ebml_void(pb, mkv->reserve_cues_space); }