From 0e3ff58336ba36fd5023c145eec09b7c6e331d1e Mon Sep 17 00:00:00 2001
From: yemou <dev@mou.pink>
Date: Sun, 15 Feb 2026 15:31:30 -0500
Subject: [PATCH] vid2gif: add more descriptive error messages instead of just
 exiting

---
 nix/vid2gif.nix |  6 ++++--
 scritps/vid2gif | 11 +++++++++--
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/nix/vid2gif.nix b/nix/vid2gif.nix
index 18cfe07..d42d64f 100644
--- a/nix/vid2gif.nix
+++ b/nix/vid2gif.nix
@@ -10,15 +10,17 @@ writeScriptBin "vid2gif" (
   builtins.replaceStrings
     [
       "#!/bin/sh"
+      "ffmpeg"
       "mktemp"
+      "printf"
       "rm"
-      "ffmpeg"
     ]
     [
       "#!${bash}/bin/sh"
+      "${ffmpeg}/bin/ffmpeg"
       "${coreutils}/bin/mktemp"
+      "${coreutils}/bin/printf"
       "${coreutils}/bin/rm"
-      "${ffmpeg}/bin/ffmpeg"
     ]
     (builtins.readFile ../scritps/vid2gif)
 )
diff --git a/scritps/vid2gif b/scritps/vid2gif
index 7bc67fb..5049d6b 100755
--- a/scritps/vid2gif
+++ b/scritps/vid2gif
@@ -3,8 +3,15 @@ scale=${3:-1}
 filters="scale=iw*${scale}:-1:flags=lanczos"
 palette_file=$(mktemp --tmpdir XXX.png)
 
-[ -z "$1" ] && exit 1
-[ -z "$2" ] && exit 1
+[ -z "$1" ] && {
+	printf '%s\n' "${0##*/}: missing input video"
+	exit 1
+}
+
+[ -z "$2" ] && {
+	printf '%s\n' "${0##*/}: missing output gif"
+	exit 1
+}
 
 ffmpeg -hide_banner -loglevel warning -i "$1" -vf "$filters,palettegen" -update true -y "$palette_file"
 ffmpeg -hide_banner -loglevel warning -i "$1" -i "$palette_file" -filter_complex "$filters,paletteuse" "$2"
-- 
2.51.2