<div dir="ltr"><div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 9, 2014 at 6:02 PM, Taha Ansari <span dir="ltr"><<a href="mailto:mtaha.ansari@gmail.com" target="_blank">mtaha.ansari@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div><div>Hi,<br><br></div>I have a specific scenario: in a restricted network environment, I have discovered sometimes there is problem with live reception of data via RTSP protocol. Reading at mailing list and other locations got me to a point where I discovered I could use HTTP tunneling to bypass proxies etc. I have upcoming two streams:<br></div><br>1- RTSP live h264 stream<br></div>2- RTSP live AAC stream<br><br></div>When I apply HTTP tunneling method with h264 data, it works without any problem. But, if I try it with AAC data, audio never gets through.<br><br>Here is uncut console output when trying to fetch such AAC streams via RTSP protocol, while the server is at a remote location (some portions are changed to protect privacy):<br><br>--------------*************--------------*************--------------*************<br>D:\....\ffmpeg-20141009-git-f6777ce-win32-shared\bin>ffpla<br>y -rtsp_transport http -loglevel debug rtsp://<a href="http://143.115.111.123:1943/a.aac" target="_blank">143.115.111.123:1943/a.aac</a><br>ffplay version N-66742-gf6777ce Copyright (c) 2003-2014 the FFmpeg developers<br> built on Oct 8 2014 22:05:56 with gcc 4.9.1 (GCC)<br> configuration: --disable-static --enable-shared --enable-gpl --enable-version3<br> --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --ena<br>ble-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --e<br>nable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-lib<br>gsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencor<br>e-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enabl<br>e-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-l<br>ibtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-<br>libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-l<br>ibwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --ena<br>ble-zlib<br> libavutil 54. 10.100 / 54. 10.100<br> libavcodec 56. 4.101 / 56. 4.101<br> libavformat 56. 9.100 / 56. 9.100<br> libavdevice 56. 1.100 / 56. 1.100<br> libavfilter 5. 1.103 / 5. 1.103<br> libswscale 3. 1.100 / 3. 1.100<br> libswresample 1. 1.100 / 1. 1.100<br> libpostproc 53. 1.100 / 53. 1.100<br>[http @ 01d798e0] request: GET /a.aac HTTP/1.10KB sq= 0B f=0/0<br>User-Agent: Lavf/56.9.100<br>Range: bytes=0-<br>Connection: close<br>Host: <a href="http://143.115.111.123:1943" target="_blank">143.115.111.123:1943</a><br>Icy-MetaData: 1<br>x-sessioncookie: 85cc4e8bbbeffd24<br>Accept: application/x-rtsp-tunnelled<br>Pragma: no-cache<br>Cache-Control: no-cache<br><br><br>[http @ 01d798e0] header='HTTP/1.1 200 OK' 0KB sq= 0B f=0/0<br>[http @ 01d798e0] http_code=200<br>[http @ 01d798e0] header='Date: Thu, 9 Oct 2014 12:46:10 GMT'<br>[http @ 01d798e0] header='Server: [some server name]'<br>[http @ 01d798e0] header='Connection: Close'<br>[http @ 01d798e0] header='Content-Type: application/x-rtsp-tunnelled'<br>[http @ 01d798e0] header='Expires: -1'<br>[http @ 01d798e0] header='Cache-Control: private, max-age=0'<br>[http @ 01d798e0] header=''<br>[http @ 01d7e420] request: POST /a.aac HTTP/1.1KB sq= 0B f=0/0<br>User-Agent: Lavf/56.9.100<br>Accept: */*<br>Connection: close<br>Host: <a href="http://143.115.111.123:1943" target="_blank">143.115.111.123:1943</a><br>Icy-MetaData: 1<br>x-sessioncookie: 85cc4e8bbbeffd24<br>Content-Type: application/x-rtsp-tunnelled<br>Pragma: no-cache<br>Cache-Control: no-cache<br>Content-Length: 32767<br>Expires: Sun, 9 Jan 1972 00:00:00 GMT<br><br><br>[rtsp @ 01d79d00] SDP:= 0 aq= 0KB vq= 0KB sq= 0B f=0/0<br>v=0<br>o=- 1951159390 1412858771 IN IP4 143.115.111.123<br>s=<br>c=IN IP4 0.0.0.0<br>t=0 0<br>m=audio 0 RTP/AVP 96<br>a=rtpmap:96 MPEG4-GENERIC/22050/2<br>a=fmtp:96 profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdelta<br>length=3;config=1390;<br>a=control:trackID=2<br><br>[rtsp @ 01d79d00] audio codec set to: aac<br>[rtsp @ 01d79d00] audio samplerate set to: 22050<br>[rtsp @ 01d79d00] audio channels set to: 2<br>[rtsp @ 01d79d00] hello state=0 0KB vq= 0KB sq= 0B f=0/0<br>[rtsp @ 01d79d00] method PLAY failed: 500 SERVER ERROR 0B f=0/0<br>[rtsp @ 01d79d00] Server: [some server name]<br>CSeq: 4<br>Cache-Control: no-cache<br>Date: Thu, 9 Oct 2014 12:46:12 GMT<br>Expires: Thu, 9 Oct 2014 12:46:12 GMT<br>Session: 31565451546595;timeout=30<br>x-Error: Failed to create audio<br><br>rtsp://<a href="http://143.115.111.123:1943/a.aac" target="_blank">143.115.111.123:1943/a.aac</a>: Invalid data found when processing input<br><br><br>D:\....\ffmpeg-20141009-git-f6777ce-win32-shared\bin><br>--------------*************--------------*************--------------*************<br></div><br>As can be seen, it fails somewhere at " method PLAY failed: 500 SERVER ERROR". Searching online for this does not give me much help, except that 500 SERVER ERROR is a general kind of error (without any details).<br><br></div>This is the latest version of FFmpeg I downloaded from zeranoe builds page today...<br><br>Has anyone experienced anything this sort before? Is there any remedy?<br><br></div>Thanks in advance for any guidance...<br></div>
</blockquote></div><br><br>Hi, <br><br>I have made little progress: if I specify "-initial_pause 1 " at command line, then after waiting for about 40 seconds, I am able to see new window pop up (the FFplay black window that shows white stuff depending upon audio signal), but this window is totally black, and even after waiting for some time, audio is never audible.<br><br>Do I need to signal initial_pause to 'off', somehow?<br><br></div><div class="gmail_extra">Here is updated command line with debug output (again some stuff like server IP changed intentionally):<br><br>--------------*************--------------*************--------------*************<br><br>D:\ffmpeg-20141009-git-f6777ce-win32-shared\bin>ffplay -loglevel debug -rtsp_transport http -initial_pause 1 rtsp://<a href="http://144.122.222.22:2757/a.aac">144.122.222.22:2757/a.aac</a><br>ffplay version N-66742-gf6777ce Copyright (c) 2003-2014 the FFmpeg developers<br> built on Oct 8 2014 22:05:56 with gcc 4.9.1 (GCC)<br> configuration: --disable-static --enable-shared --enable-gpl --enable-version3<br> --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --ena<br>ble-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --e<br>nable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-lib<br>gsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencor<br>e-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enabl<br>e-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-l<br>ibtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-<br>libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-l<br>ibwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --ena<br>ble-zlib<br> libavutil 54. 10.100 / 54. 10.100<br> libavcodec 56. 4.101 / 56. 4.101<br> libavformat 56. 9.100 / 56. 9.100<br> libavdevice 56. 1.100 / 56. 1.100<br> libavfilter 5. 1.103 / 5. 1.103<br> libswscale 3. 1.100 / 3. 1.100<br> libswresample 1. 1.100 / 1. 1.100<br> libpostproc 53. 1.100 / 53. 1.100<br>[http @ 02239a20] request: GET /a.aac HTTP/1.10KB sq= 0B f=0/0<br>User-Agent: Lavf/56.9.100<br>Range: bytes=0-<br>Connection: close<br>Host: <a href="http://144.122.222.22:2757">144.122.222.22:2757</a><br>Icy-MetaData: 1<br>x-sessioncookie: 5210038d40d12611<br>Accept: application/x-rtsp-tunnelled<br>Pragma: no-cache<br>Cache-Control: no-cache<br><br><br>[http @ 02239a20] header='HTTP/1.1 200 OK' 0KB sq= 0B f=0/0<br>[http @ 02239a20] http_code=200<br>[http @ 02239a20] header='Date: Fri, 10 Oct 2014 09:39:29 GMT'<br>[http @ 02239a20] header='Server: [some streaming server]'<br>[http @ 02239a20] header='Connection: Close'<br>[http @ 02239a20] header='Content-Type: application/x-rtsp-tunnelled'<br>[http @ 02239a20] header='Expires: -1'<br>[http @ 02239a20] header='Cache-Control: private, max-age=0'<br>[http @ 02239a20] header=''<br>[http @ 0223d560] request: POST /a.aac HTTP/1.1KB sq= 0B f=0/0<br>User-Agent: Lavf/56.9.100<br>Accept: */*<br>Connection: close<br>Host: <a href="http://144.122.222.22:2757">144.122.222.22:2757</a><br>Icy-MetaData: 1<br>x-sessioncookie: 5210038d40d12611<br>Content-Type: application/x-rtsp-tunnelled<br>Pragma: no-cache<br>Cache-Control: no-cache<br>Content-Length: 32767<br>Expires: Sun, 9 Jan 1972 00:00:00 GMT<br><br><br>[rtsp @ 02239e20] SDP:= 0 aq= 0KB vq= 0KB sq= 0B f=0/0<br>v=0<br>o=- 545483151 1412933970 IN IP4 144.122.222.22<br>s=<br>c=IN IP4 0.0.0.0<br>t=0 0<br>m=audio 0 RTP/AVP 96<br>a=rtpmap:96 MPEG4-GENERIC/22050/2<br>a=fmtp:96 profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdelta<br>length=3;config=1390;<br>a=control:trackID=2<br><br>[rtsp @ 02239e20] audio codec set to: aac<br>[rtsp @ 02239e20] audio samplerate set to: 22050<br>[rtsp @ 02239e20] audio channels set to: 2<br>Input #0, rtsp, from 'rtsp://<a href="http://144.122.222.22:2757/a.aac':0B">144.122.222.22:2757/a.aac':0B</a> f=0/0<br> Metadata:<br> title :<br> Duration: N/A, bitrate: N/A<br> Stream #0:0, 0, 1/22050: Audio: aac, 22050 Hz, stereo, fltp<br>detected 4 logical cores<br>[ffplay_abuffer @ 022bb880] Setting 'sample_rate' to value '22050'<br>[ffplay_abuffer @ 022bb880] Setting 'sample_fmt' to value 'fltp'<br>[ffplay_abuffer @ 022bb880] Setting 'channels' to value '2'<br>[ffplay_abuffer @ 022bb880] Setting 'time_base' to value '1/22050'<br>[ffplay_abuffer @ 022bb880] Setting 'channel_layout' to value '0x3'<br>[ffplay_abuffer @ 022bb880] tb:1/22050 samplefmt:fltp samplerate:22050 chlayout:<br>0x3<br>[ffplay_abuffersink @ 022d1100] auto-inserting filter 'auto-inserted resampler 0<br>' between the filter 'ffplay_abuffer' and the filter 'ffplay_abuffersink'<br>[AVFilterGraph @ 0221e860] query_formats: 2 queried, 0 merged, 3 already done, 0<br> delayed<br>[auto-inserted resampler 0 @ 022d2d00] ch:2 chl:stereo fmt:fltp r:22050Hz -> ch:<br>2 chl:stereo fmt:s16 r:22050Hz<br> nan M-A: nan fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0<br><br>D:\ffmpeg-20141009-git-f6777ce-win32-shared\bin><br><br>--------------*************--------------*************--------------*************<br></div></div></div>