feat: 添加配置bilibili.alert.ffmpegFail,用于关闭视频转码失败时的警告

src/nicelee/bilibili/downloaders/impl/FLVDownloader.java

@@ -150,7 +150,10 @@ protected boolean throwErrorIfNotConvertOk(boolean ok, String msg) {
 			return true;
 		} else {
 			convertingStatus = StatusEnum.FAIL;
-			throw new BilibiliError("转码失败，请检查ffmpeg配置: " + msg);
+			if(Global.alertIfFFmpegFail)
+				throw new BilibiliError("如需关闭该警告，请在配置页搜索并修改配置 bilibili.alert.ffmpegFail\n\t转码失败，请检查ffmpeg配置: " + msg);
+			else
+				return false;
 		}
 	}
 	/**

src/nicelee/ui/Global.java

@@ -189,6 +189,8 @@ public class Global {
 	public static String[] ffmpegCmd4Merge;
 	@Config(key = "bilibili.flv.ffmpeg", note = "FLV合并时是否调用ffmpeg", defaultValue = "false", valids = { "true", "false" })
 	public static boolean flvUseFFmpeg = false;
+	@Config(key = "bilibili.alert.ffmpegFail", note = "ffmpeg合并失败是否抛出异常", defaultValue = "true", valids = { "true", "false" })
+	public static boolean alertIfFFmpegFail = true;
 	@Config(key = "bilibili.cmd.debug", note = "调用外部命令时是否显示输出", defaultValue = "false", valids = { "true", "false" })
 	public static boolean debugCmd;
 	// 批量下载设置相关

src/resources/app.config

@@ -227,6 +227,9 @@ bilibili.alert.maxAlertPrompt = 5
 # 当遇到不期望的480P视频时是否抛出异常
 ## https://github.com/nICEnnnnnnnLee/BilibiliDown/issues/141
 bilibili.alert.qualityUnexpected = true
+
+# ffmpeg合并失败是否抛出异常
+bilibili.alert.ffmpegFail = true
 #######################################################################################################
 # 同时支持HTTP + HTTPS 代理
 #proxyHost = 127.0.0.1