Attached is a screen shot of the setup I am trying to get EMS to replicate – vlc streaming the mp4 video over rtsp and another vlc instance using that feed to display the video stream.
This is the output I get when I run the command with the same messages about Libav.
$ /bin/evo-avconv -i rtsp://127.0.0.1:8554/stream_raw -c:v libx264 -c:a libfaac -b:v 1000k -metadata streamName=stream_h264 -f flv tcp://localhost:6666
avconv version 11.3, Copyright (c) 2000-2014 the Libav developers
built on Nov 4 2015 20:24:09 with gcc 4.8.3 (GCC) 20140911 (Red Hat 4.8.3-9)
[aac @ 0x2ab7260] Audio object type 0 is not implemented. Update your Libav version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x2ab7260] Audio object type 0 is not implemented. Update your Libav version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[rtsp @ 0x2aa41a0] Estimating duration from bitrate, this may be inaccurate
Guessed Channel Layout for Input Stream #0.0 : 5.1
Input #0, rtsp, from 'rtsp://127.0.0.1:8554/stream_raw':
Metadata:
title : Unnamed
comment : N/A
Duration: N/A, start: 273.045542, bitrate: N/A
Stream #0.0: Audio: aac, 48000 Hz, 6 channels, fltp
Stream #0.1: Video: mpeg4 (Simple Profile), yuv420p, 640x368 [PAR 1:1 DAR 40:23], 25 fps, 90k tbn, 25 tbc
[tcp @ 0x2abb640] Connection to tcp://localhost:6666 failed (Connection refused), trying next address
[libx264 @ 0x2b02780] using SAR=1/1
[libx264 @ 0x2b02780] MB rate (82800000) > level limit (2073600)
[libx264 @ 0x2b02780] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x2b02780] profile High, level 5.2
[libx264 @ 0x2b02780] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=1000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[aac @ 0x2afdb80] Audio object type 0 is not implemented. Update your Libav version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
Output #0, flv, to 'tcp://localhost:6666':
Metadata:
title : Unnamed
comment : N/A
streamName : stream_h264
Stream #0.0: Video: libx264, yuv420p, 640x368 [PAR 1:1 DAR 40:23], q=-1--1, 1000 kb/s, 90k tbn, 90k tbc
Metadata:
encoder : Lavc56.1.0 libx264
Stream #0.1: Audio: libfaac, 48000 Hz, 5.1, s16, 200 kb/s
Metadata:
encoder : Lavc56.1.0 libfaac
Stream mapping:
Stream #0:1 -> #0:0 (mpeg4 (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (aac (native) -> aac (libfaac))
Error while opening decoder for input stream #0:0 : Function not implemented
[libx264 @ 0x2b02780] final ratefactor: 93.34
$