How to merge downloaded videos automatically(was: 如何自动合并下载的视频)

[Token713]

我下载了ffmpeg和youtube-dl，用youtube-dl下载视频后都是分成很多块，如何使用ffmpeg将这些视频自动合并起来？
之前一直在用you-get，使用windows版本https://github.com/soimort/you-get/releases/tag/v0.4.424
，运行you-get.bat下载视频结束后会自动合并，我注意到该文件夹下附带了ffmpeg，我试着将you-get.exe替换为youtube-dl.exe但没有成功，有没有高手弄个bat啥的，可以自动合并，先谢谢了。

[yan12125]

Please use English so that others can understand the situation.
(請用英文表達問題，方便其他人了解情況)

For your question: this feature is currently not yet implemented in youtube-dl. See #995.
(針對你的問題：這個功能還沒在youtube-dl中實做出來，詳見#995。)

[yan12125]

有没有高手弄个bat啥的，可以自动合并，先谢谢了。
(Is there a batch script for automatic merging? Thanks.)

Here's one, for BiliBili videos: #9660 (comment)

[Token713]

@yan12125 Thanks in advance for translate my title.
I use youtube-dl download videos from IQIYI but couldn't merging them,I know a lot of people are using youtube-dl，i was just wondering how you merged the video.
Thank you again for your reply.