From bdcbf8c06799cec8ac7776c74f8ef493f5866123 Mon Sep 17 00:00:00 2001
From: tth <tth@fubar.tetalab.org>
Date: Sun, 21 Feb 2021 16:42:47 +0100
Subject: [PATCH] + warning about upscaling

---
 v4l2/grabvidseq.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/v4l2/grabvidseq.c b/v4l2/grabvidseq.c
index ef855ae..16b0acf 100644
--- a/v4l2/grabvidseq.c
+++ b/v4l2/grabvidseq.c
@@ -168,6 +168,11 @@ if (verbosity > 1) {
 	if (upscaling) fprintf(stderr, "upscaling is on\n");
 	}
 
+if (upscaling && (nbre_capt%4)) {
+	fprintf(stderr, "WARN upscaling: %d bad nbre_capt\n",
+					   nbre_capt);
+	}
+
 fd = v4l2_open(dev_name, O_RDWR | O_NONBLOCK, 0);
 if (fd < 0) {
 	perror(dev_name);