ffmpeg命令行接收rtmp的问题

在使用ffmpeg的命令行接收rtmp流的过程中发现无法正常接收，出现如下问题：

topsluo@localhost:~/workspace/ffmpeg-3.2.2$ ./ffmpeg -live 1 -i rtmp://192.168.10.230:1935/live/test test.ts     
ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
Closing connection: NetStream.Play.StreamNotFound
rtmp://192.168.10.230:1935/live/test: Unknown error occurred

在网上找了一下查关问题的解决方法，最终这条链接给了我一些提示，修改一下命令行：

./ffmpeg -i rtmp://192.168.10.230:1935/live/test test.ts
改为
./ffmpeg -rtmp_live 1 -i rtmp://192.168.10.230:1935/live/test test.ts

最终发现，问题得到解决

topsluo@localhost:~/workspace/ffmpeg-3.2.2$ ./ffmpeg -rtmp_live 1 -i rtmp://192.168.10.230:1935/live/test
Input #0, flv, from 'rtmp://192.168.10.230:1935/live/test':
  Metadata:
    fileSize        : 0
    audiochannels   : 2
    encoder         : Open Broadcaster Software v0.638b
  Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(tv, bt709/bt709/iec61966-2-1, progressive), 1920x1080, 30.30 fps, 30 tbr, 1k tbn, 60 tbc
    Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp
    At least one output file must be specified