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use ffmpeg

Alfredo 2017-10-13 22:26:53 UTC in Nimble Streamer

Hello everyone,

I want to know if I can use ffmpeg to encode my RTMP stream in various resolutions,
I know there is a coder, but it has a license.
https://wmspanel.com/transcoder
I want to know if I can use FFMPEG as encoder manually.

Thank you.

Alex Pokotilo 2017-10-15 13:54:44 UTC 

Hi,
please check http://blog.wmspanel.com/2014/10/server-tasks-web-management.html

if you find key-frame alignment issues, performance issues or need support for your encoding tasks consider transcoder

Alfredo 2017-10-30 21:19:46 UTC 

How can I do that?

I'm trying to encode a live broadcast, using the following command:

ffmpeg -loglevel debug -i rtmp: //127.0.0.1: 1935 / live -vcodec libx264 -preset veryfast -b: v 2000k -maxrate 2000k -bufsize 2000k -s 480x360 -sws_flags lanczos -r 60 -acodec copy -f flv rtmp : //127.0.0.1: 1935 / live2? Rtmpauth = live: live / live

But nothing happens, the command is executed and then stopped, without errors.

Any ideas?

Thank you.

Denis Slobodskoy 2017-10-31 02:25:17 UTC 

Hello Alfredo.
What ffmpeg version are you using?
Could you give output of ffmpeg -version command?
There are an excessive number of extra whitespaces in your command - is it result of copy/paste or you run it as is?
Also I noticed that your source misses stream name; credentials doesn't match with application settings in Nimble and "rtmpauth" must be in lowercase. Summarizing all above, your command should looks like:
ffmpeg -i rtmp://127.0.0.1:1935/live/live -vcodec libx264 -preset veryfast -b:v 2000k -maxrate 2000k -bufsize 2000k -s 480x360 -sws_flags lanczos -r 60 -acodec copy -f flv rtmp://127.0.0.1:1935/live2?rtmpauth=live2:live2/live

If you have more questions, please use our contact form: https://wmspanel.com/help

Alfredo 2017-10-31 23:12:38 UTC 

hi Denis,
* What ffmpeg version are you using?

ffmpeg version 2.8.11

________________________________________________________________________
* Could you give output of ffmpeg -version command?

ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100

* yes is it result of copy/paste jeje.

i am trying with this command:
ffmpeg -loglevel verbose -i rtmp://127.0.0.1:1935/live/live -c copy -f flv rtmp://127.0.0.1:1935/live2/live2 live=true pubUser=live2 pubPasswd=live2

... continue down

Alfredo 2017-10-31 23:14:32 UTC 

but output this log:
________________________LOG________________________________________
Parsing...
Parsed protocol: 0
Parsed host : 127.0.0.1
Parsed app : live
RTMP_Connect1, ... connected, handshaking
HandShake: Type Answer : 03
HandShake: Server Uptime : 0
HandShake: FMS Version : 10.0.0.1
HandShake: Handshaking finished....
RTMP_Connect1, handshaked
Invoking connect
HandleServerBW: server BW = 5000000
HandleClientBW: client BW = 5000000 2
HandleCtrl, received ctrl. type: 0, len: 6
HandleCtrl, Stream Begin 0
HandleChangeChunkSize, received: chunk size change to 1048576
RTMP_ClientPacket, received: invoke 131 bytes
(object begin)
Property: <Name: no-name., STRING: _result>
Property: <Name: no-name., NUMBER: 1.00>
Property: <Name: no-name., OBJECT>
(object begin)
Property: <Name: fmsVer, STRING: Nimble/3.3.1-1>
(object end)
Property: <Name: no-name., OBJECT>
(object begin)
Property: <Name: level, STRING: status>
Property: <Name: code, STRING: NetConnection.Connect.Success>
Property: <Name: objectEncoding, NUMBER: 0.00>
(object end)
(object end)
HandleInvoke, server invoking <_result>
HandleInvoke, received result for method call <connect>
sending ctrl. type: 0x0003
Invoking createStream
RTMP_ClientPacket, received: invoke 29 bytes
(object begin)
Property: <Name: no-name., STRING: _result>
Property: <Name: no-name., NUMBER: 2.00>
Property: NULL
Property: <Name: no-name., NUMBER: 1.00>
(object end)
HandleInvoke, server invoking <_result>
HandleInvoke, received result for method call <createStream>
SendPlay, seekTime=0, stopTime=0, sending play: live
Invoking play
sending ctrl. type: 0x0003
HandleCtrl, received ctrl. type: 0, len: 6
HandleCtrl, Stream Begin 1
RTMP_ClientPacket, received: invoke 115 bytes
(object begin)
Property: <Name: no-name., STRING: onStatus>
Property: <Name: no-name., NUMBER: 0.00>
Property: NULL
Property: <Name: no-name., OBJECT>
(object begin)
Property: <Name: level, STRING: status>
Property: <Name: code, STRING: NetStream.Play.Start>
Property: <Name: description, STRING: Start live>
Property: <Name: clientid, NUMBER: 3057890206.00>
(object end)
(object end)
HandleInvoke, server invoking <onStatus>
HandleInvoke, onStatus: NetStream.Play.Start
RTMP_ClientPacket, received: notify 24 bytes
(object begin)
Property: <Name: no-name., STRING: |RtmpSampleAccess>
Property: <Name: no-name., BOOLEAN: FALSE>
Property: <Name: no-name., BOOLEAN: FALSE>
(object end)
HandleCtrl, received ctrl. type: 32, len: 6
HandleCtrl, Stream BufferReady 1
RTMP_ClientPacket, received: notify 341 bytes
(object begin)
Property: <Name: no-name., STRING: onMetaData>
Property: <Name: no-name., ECMA_ARRAY>
(object begin)
Property: <Name: duration, NUMBER: 0.00>
Property: <Name: fileSize, NUMBER: 0.00>
Property: <Name: width, NUMBER: 424.00>
Property: <Name: height, NUMBER: 240.00>
Property: <Name: videocodecid, STRING: avc1>
Property: <Name: videodatarate, NUMBER: 2500.00>
Property: <Name: framerate, NUMBER: 30.00>
Property: <Name: audiocodecid, STRING: mp4a>
Property: <Name: audiodatarate, NUMBER: 160.00>
Property: <Name: audiosamplerate, NUMBER: 44100.00>
Property: <Name: audiosamplesize, NUMBER: 16.00>
Property: <Name: audiochannels, NUMBER: 2.00>
Property: <Name: stereo, BOOLEAN: TRUE>
Property: <Name: encoder, STRING: obs-output module (libobs version 20.1.0)>

... continue down

Alfredo 2017-10-31 23:14:50 UTC 

(object end)
(object end)
Metadata:
duration 0.00
fileSize 0.00
width 424.00
height 240.00
videocodecid avc1
videodatarate 2500.00
framerate 30.00
audiocodecid mp4a
audiodatarate 160.00
audiosamplerate 44100.00
audiosamplesize 16.00
audiochannels 2.00
stereo TRUE
encoder obs-output module (libobs version 20.1.0)
[flv @ 0xf016a0] Stream discovered after head already parsed
Input #0, flv, from 'rtmp://127.0.0.1:1935/live/live':
Metadata:
fileSize : 0
audiochannels : 2
encoder : obs-output module (libobs version 20.1.0)
Duration: 00:00:00.00, start: 1062.634000, bitrate: N/A
Stream #0:0: Audio: aac (LC), 44100 Hz, stereo, fltp, 163 kb/s
Stream #0:1: Video: h264 (High), 4 reference frames, yuv420p, 424x240 (432x240), 30.30 fps, 30 tbr, 1k tbn, 60 tbc
Parsing...
Parsed protocol: 0
Parsed host : localhost
Parsed app : live2
RTMP_Connect1, ... connected, handshaking
HandShake: Type Answer : 03
HandShake: Server Uptime : 0
HandShake: FMS Version : 10.0.0.1
HandShake: Handshaking finished....
RTMP_Connect1, handshaked
Invoking connect
HandleServerBW: server BW = 5000000
HandleClientBW: client BW = 5000000 2
HandleCtrl, received ctrl. type: 0, len: 6
HandleCtrl, Stream Begin 0
HandleChangeChunkSize, received: chunk size change to 1048576
RTMP_ClientPacket, received: invoke 131 bytes
(object begin)
Property: <Name: no-name., STRING: _result>
Property: <Name: no-name., NUMBER: 1.00>
Property: <Name: no-name., OBJECT>
(object begin)
Property: <Name: fmsVer, STRING: Nimble/3.3.1-1>
(object end)
Property: <Name: no-name., OBJECT>
(object begin)
Property: <Name: level, STRING: status>
Property: <Name: code, STRING: NetConnection.Connect.Success>
Property: <Name: objectEncoding, NUMBER: 0.00>
(object end)
(object end)
HandleInvoke, server invoking <_result>
HandleInvoke, received result for method call <connect>
Invoking releaseStream
Invoking FCPublish
Invoking createStream
RTMP_ClientPacket, received: invoke 137 bytes
(object begin)
Property: <Name: no-name., STRING: onFCPublish>
Property: <Name: no-name., NUMBER: 0.00>
Property: NULL
Property: <Name: no-name., OBJECT>
(object begin)
Property: <Name: level, STRING: status>
Property: <Name: code, STRING: NetStream.Publish.Start>
Property: <Name: description, STRING: FCPublish to stream live2.>
Property: <Name: clientid, NUMBER: 3735928559.00>
(object end)
(object end)
HandleInvoke, server invoking <onFCPublish>
RTMP_ClientPacket, received: invoke 29 bytes
(object begin)
Property: <Name: no-name., STRING: _result>
Property: <Name: no-name., NUMBER: 4.00>
Property: NULL
Property: <Name: no-name., NUMBER: 1.00>
(object end)
HandleInvoke, server invoking <_result>
HandleInvoke, received result for method call <createStream>
Invoking publish
Invoking FCUnpublish

and the end it closes.

I think this is important:
[flv @ 0xf016a0] Stream discovered after head already parsed

I appreciate the help very much.

Denis Slobodskoy 2017-10-31 23:33:51 UTC 

Alfredo,
take a look at your nimble log (at /etc/nimble/log/nimble.log), there should be messages like this:
[rtmp] E: publish not authorized for live2/live2
Not sure pubUser/pubPassword works properly; try to set login/pass in output stream in rtmp://login:pass@server/path format) (must be rtmp://live2:live2@127.0.0.1:1935/live2/live2 in your case).

Alfredo 2017-10-31 23:52:47 UTC 

Denis,
Thanks for you help.

I found a link in this route:

/var/log/nimble/nimble.log

It effectively shows me the error you mention:

[2017-10-31 23:42:35 P1971-T1982] [rtmp] E: publish not authorized for live2/live2

I tried using authentication how do you tell me:

rtmp://live2:live2@127.0.0.1:1935/live2/live2

but show me this error:

Problem accessing the DNS. (addr: live2)
rtmp://live2:live2@127.0.0.1:1935/live2/live2: Unknown error occurred

I have tried with this form to authenticate:

rtmp://127.0.0.1:1935/live2/live2?rtmpauth=live2:live2

He does not show me an error, but nothing happens. it just closes.
There is no record in the /var/log/nimble/nimble.log file either

What could be happening?

Denis Slobodskoy 2017-11-01 00:13:23 UTC 

Alfredo,
rtmpauth must be put before stream name, so url have format rtmp://server/applicaion?rtmpauth=login:pass/stream, i.e. in your case you should use rtmp://127.0.0.1:1935/live2?rtmpauth=live2:live2/live2

Alfredo 2017-11-01 00:26:30 UTC 

I have managed to make it work using the comendo like this:

ffmpeg -i rtmp://127.0.0.1:1935/live/live -vcodec libx264 -c copy -acodec copy -f flv "rtmp://127.0.0.1:1935/live2/live2 flashver=FMLE/3.0\20(compatible;)FMSc/1.0\29 pubUser=live2 pubPasswd=live2"

I already think it works, but I'm having a new error:

This is directly from FFMPEG, but I'm not sure if nimble has anything to do with it:

The error:
*** Error in `ffmpeg ': free (): invalid next size (fast): 0x0000000001563a20 ***
.
.
.
Aborted (core dumped)

This seems difficult to solve.

Denis Slobodskoy 2017-11-01 00:51:02 UTC 

Alfredo,
try to install ffmpeg 3.4 as described here: http://tipsonubuntu.com/2016/11/02/install-ffmpeg-3-2-via-ppa-ubuntu-16-04/
At least, it supports authentication via rtmp://login:pass@server/app/stream

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