From c3cffb510bf1739bff4c8c6534e383de291519ce Mon Sep 17 00:00:00 2001
From: Scott Lamb <slamb@slamb.org>
Date: Sun, 5 Mar 2017 00:58:06 -0800
Subject: [PATCH] make an assert more informative

I got this error but didn't understand how it happened.
---
 src/mp4.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/mp4.rs b/src/mp4.rs
index a1c2512..b5441c0 100644
--- a/src/mp4.rs
+++ b/src/mp4.rs
@@ -830,9 +830,9 @@ impl FileBuilder {
             let actual = s.s.actual_time_90k();
             let skip = s.s.desired_range_90k.start - actual.start;
             let keep = s.s.desired_range_90k.end - s.s.desired_range_90k.start;
-            assert!(skip >= 0 && keep > 0, "desired={}..{} actual={}..{}",
-                    s.s.desired_range_90k.start, s.s.desired_range_90k.end,
-                    actual.start, actual.end);
+            assert!(skip >= 0 && keep > 0, "segment {}/{}: desired={}..{} actual={}..{}",
+                    s.s.camera_id, s.s.recording_id, s.s.desired_range_90k.start,
+                    s.s.desired_range_90k.end, actual.start, actual.end);
             cur_media_time += skip as u64;
             if unflushed.segment_duration + unflushed.media_time == cur_media_time {
                 unflushed.segment_duration += keep as u64;