在Linux中使用FFMPEG覆盖TS流文件

I'm trying to convert rtmp streams to m3u8 stream. To reach that aim I use FFMPEG. Now, there is no problem with converting and downloading. However, it writes lots of .ts file such as channel0000.ts,channel0001.ts,channel0002.ts. Per every 10 seconds, 1 ts file is created. In this point, I want a single ts file. In other words, I need overwriting because I don't want to store all the stream I need just last 10 seconds. When I try to write on the same file I get this error:I'm trying to convert rtmp streams to m3u8 stre