From aa11042839ea7e850f665f0d4b908ce85bc8067a Mon Sep 17 00:00:00 2001
From: William Charlton <38622599+willwill2will54@users.noreply.github.com>
Date: Sat, 25 Jul 2020 21:03:19 +0100
Subject: [PATCH] Fixes error with slow mode on low FPS

When frame_time exceeds 0.5 this change caps the sleep time to be at least zero, as trying to sleep a negative duration crashes the program.
---
 src/cli/test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cli/test.py b/src/cli/test.py
index 21cb2db..dbcd06d 100644
--- a/src/cli/test.py
+++ b/src/cli/test.py
@@ -183,7 +183,7 @@ try:
 
 		# Delay the frame if slowmode is on
 		if slow_mode:
-			time.sleep(.5 - frame_time)
+			time.sleep(max([.5 - frame_time, 0.0]))
 
 		if exposure != -1:
 			# For a strange reason on some cameras (e.g. Lenoxo X1E)