[rtmpdump] some live streams can not be opened

[Mikhail I. Izmestev]

Hello everyone,

I'm using ffmpeg with librtmp from rtmpdump project, it's great!

I have discovered that rtmpdump can not open some live streams which
flvstreamer can open correctly.

<code>
$ ./rtmpdump -v -r rtmp://fms5.visionip.tv/live/RT_3.flv
RTMPDump v2.2e
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
WARNING: You haven't specified an output file (-o filename), using stdout
Connecting ...
INFO: Connected...
$
</code>

<code>
$ ./flvstreamer -v -r rtmp://fms5.visionip.tv/live/RT_3.flv | ffmpeg -i -
FLVStreamer v2.1c1
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
FFmpeg version SVN-r23514, Copyright (c) 2000-2010 the FFmpeg developers
  built on Jun  7 2010 21:11:44 with gcc 4.3.4
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--mandir=/usr/share/man --enable-static --enable-shared
--cc=x86_64-pc-linux-gnu-gcc --disable-debug --disable-optimizations
--enable-librtmp --enable-libmp3lame --enable-libvorbis
--enable-libtheora --enable-libxvid --disable-indev=oss
--disable-indev=jack --disable-outdev=oss --enable-x11grab
--enable-libopenjpeg --disable-vdpau --disable-vaapi --disable-altivec
--cpu=host --enable-gpl --enable-version3 --enable-postproc
--enable-avfilter --enable-avfilter-lavf --disable-stripping
--enable-hardcoded-tables --disable-doc
  libavutil     50.18. 0 / 50.18. 0
  libavcodec    52.74. 1 / 52.74. 1
  libavformat   52.68. 0 / 52.68. 0
  libavdevice   52. 2. 0 / 52. 2. 0
  libavfilter    1.20. 0 /  1.20. 0
  libswscale     0.11. 0 /  0.11. 0
  libpostproc   51. 2. 0 / 51. 2. 0
Starting Live Stream
Metadata:
  author               
  copyright            
  description          
  keywords             
  rating               
  title                
  presetname            Custom
  creationdate          Fri May 07 10:50:34 2010
  videodevice           Osprey-450e Video Device 1B
  framerate             25.00
  width                 640.00
  height                480.00
  videocodecid          avc1
  videodatarate         900.00
  avclevel              31.00
  avcprofile            66.00
  videokeyframe_frequency5.00
  audiodevice           Osprey-450e Audio Device 1B
  audiosamplerate       44100.00
  audiochannels         2.00
  audioinputvolume      75.00
  audiocodecid          .mp3
  audiodatarate         96.00
26.525 kB / 0.66 sec[flv @ 0x63f470]invalid stream
108.335 kB / 2.00 sec[flv @ 0x63f470]Estimating duration from bitrate,
this may be inaccurate
Input #0, flv, from 'pipe:':
  Duration: N/A, start: 0.000000, bitrate: 96 kb/s
    Stream #0.0: Video: h264, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 25
tbr, 1k tbn, 50 tbc
    Stream #0.1: Audio: mp3, 44100 Hz, 2 channels, s16, 96 kb/s
At least one output file must be specified

Caught signal: 13, cleaning up, just a second...
ERROR: Download: Failed writing, exiting!
$
</code>

Mikhail.