1个视频100个part，失败了1个part，怎么办 #31
Description
2022/01/22 10:31:50 253258169:53_1.flv is downloading.
2022/01/22 10:31:52 253258169:5_1.flv has finished.
2022/01/22 10:31:53 253258169:58_1.flv is downloading.
2022/01/22 10:32:09 Failed to download video 489247744
2022/01/22 10:32:11 253258169:60_1.flv is downloading.
2022/01/22 10:34:00 253258169:34_1.flv has finished.
2022/01/22 10:34:01 253258169:67_1.flv is downloading
失败了其中一个， 不会要我重跑吧， 工程主帮忙实现一个错误重新下载的吧