FFmpeg：NetStream.Play.StreamNotFound在RMTP流 [英] FFmpeg: NetStream.Play.StreamNotFound on RMTP stream

问题描述

我想定期拍摄RTMP直播视频流的快照。
我可以看到使用VLC的rtmp视频流。这是rtmp网址：

I want to take snapshots periodically of a RTMP live video stream. I can see the rtmp video stream using VLC. This is the rtmp url:

rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1

根据官方的FFmpeg网站 here ：

I'm using the following command to capture the snapshots, according to the official FFmpeg site here:

ffmpeg -i rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1 -f image2 -vf fps=fps=1 out%d.png

该命令产生以下输出：

ffmpeg version N-64667-gd595361 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jul 14 2014 22:09:48 with gcc 4.8.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzl
libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amr
enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --ena
  libavutil      52. 92.100 / 52. 92.100
  libavcodec     55. 69.100 / 55. 69.100
  libavformat    55. 47.100 / 55. 47.100
  libavdevice    55. 13.102 / 55. 13.102
  libavfilter     4. 10.100 /  4. 10.100
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
HandShake: client signature does not match!
Closing connection: NetStream.Play.StreamNotFound
rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1: Unknown error occurred

我已尝试使用另一个rmtp流，但我仍然收到完全相同的错误。

I've tried it with another rmtp streams, but I'm still getting the exact same error.

可能是什么问题？
谢谢！

What could be the problem? Thank you!

推荐答案

我刚刚尝试了你的命令，对我来说工作正常。也许这是关于你的FFMPEG安装的？我在Mac上使用2.4版本（tessus build）。

I just tried your command and it worked fine for me. Maybe it is something about your FFMPEG installation? I am using version 2.4 on a Mac (tessus build).

我知道其他/旧版本的librtmp用于rtmp连接，这需要流后面的一些额外的选项URL。见ffmpeg的文档在这里：在librtmp ffmpeg的文档>

I know other/older versions used "librtmp" for rtmp connections, which required some extra options behind the stream URL. See ffmpeg docs here: ffmpeg documentation on librtmp

和librtmp文档在这里：
librtmp文档

And librtmp docs here: librtmp documentation

对于未受保护的直播流，您可能需要尝试引用流网址，并在引号内附加live = 1：

For an unprotected live stream, you may want to try quoting the stream URL and appending " live=1" within the quotes:

ffmpeg -i "rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1 live=1" -f image2 -vf fps=fps=1 out%d.png

这篇关于FFmpeg：NetStream.Play.StreamNotFound在RMTP流的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！