From 55ebcc1857a08a51ed39ab2e15e25fd22d7fdaca Mon Sep 17 00:00:00 2001
From: ww-rm <ww-rm@qq.com>
Date: Wed, 11 Jun 2025 13:38:55 +0800
Subject: [PATCH] =?UTF-8?q?=E5=90=88=E5=B9=B6=E5=AF=BC=E5=87=BA=E6=97=B6?=
 =?UTF-8?q?=E4=B9=9F=E5=85=81=E8=AE=B8=E8=87=AA=E5=8A=A8=E6=97=B6=E9=95=BF?=
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---
 .../Spine/SpineExporter/VideoExporter.cs      | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/SpineViewer/Spine/SpineExporter/VideoExporter.cs b/SpineViewer/Spine/SpineExporter/VideoExporter.cs
index 7b55087..db13c80 100644
--- a/SpineViewer/Spine/SpineExporter/VideoExporter.cs
+++ b/SpineViewer/Spine/SpineExporter/VideoExporter.cs
@@ -30,15 +30,6 @@ namespace SpineViewer.Spine.SpineExporter
         /// </summary>
         public bool KeepLast { get; set; } = true;
 
-        public override string? Validate()
-        {
-            if (base.Validate() is string error)
-                return error;
-            if (IsExportSingle && Duration < 0)
-                return Properties.Resources.negativeDuration;
-            return null;
-        }
-
         /// <summary>
         /// 生成单个模型的帧序列
         /// </summary>
@@ -93,8 +84,16 @@ namespace SpineViewer.Spine.SpineExporter
         /// </summary>
         protected IEnumerable<SFMLImageVideoFrame> GetFrames(SpineObject[] spinesToRender, BackgroundWorker? worker = null)
         {
-            // 导出单个时必须根据 Duration 决定导出时长
+            // 导出单个时取所有模型的所有轨道时长最大值
             var duration = Duration;
+            if (duration < 0)
+            {
+                duration = spinesToRender.Select(
+                    sp => sp.GetTrackIndices().Select(
+                        i => sp.GetAnimationDuration(sp.GetAnimation(i))
+                    ).DefaultIfEmpty(0).Max()
+                ).Max();
+            }
 
             float delta = 1f / FPS;
             int total = (int)(duration * FPS); // 完整帧的数量