From a7c43babb7c43005e89f2a18bc8688f301def583 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 30 Jan 2015 21:26:29 +0100
Subject: [PATCH] player: print desync message on negative A/V-sync too

At least there is _some_ problem if this happens. It would mean that
audio is playing slower than video. Normally, video is synced to audio,
so if audio stops playback completely, video will not advance at all.
But using things like --autosync, it's well possible that this kind of
desync happens.
---
 player/video.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/player/video.c b/player/video.c
index f8b1888ad4..c75603da10 100644
--- a/player/video.c
+++ b/player/video.c
@@ -719,7 +719,7 @@ static void update_avsync_after_frame(struct MPContext *mpctx)
         mpctx->last_av_difference += mpctx->time_frame * opts->playback_speed;
     if (a_pos == MP_NOPTS_VALUE || mpctx->video_pts == MP_NOPTS_VALUE)
         mpctx->last_av_difference = MP_NOPTS_VALUE;
-    if (mpctx->last_av_difference > 0.5 && !mpctx->drop_message_shown) {
+    if (fabs(mpctx->last_av_difference) > 0.5 && !mpctx->drop_message_shown) {
         MP_WARN(mpctx, "%s", av_desync_help_text);
         mpctx->drop_message_shown = true;
     }