Media Server :: Audio Delay FMS 3.5
Jul 24, 2010
I have an application that uses FMS 3.5 to stream live audio between 2 computers.Currently, the delay between when the person speaks and the time the other person hears it is about 2 - 3 seconds.This makes it difficult to have a conversation because one person regularly steps on the other.I am using a NetStream object that connects to the fms server.I then attach audio.What configurations can be set so that the least amount of delay is experienced between the two computers? Can fms ever relay audio as quick as something like Google Talk?
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Nov 24, 2010
I've a site where consumer can take a live meeting with the beauty consultant. The problem I'm facing is during the video chat. Basically there is a delay of 5 seconds between Video and Audio when I access the site from out of my network but when I access it within my network (VPN) then it's work fine.
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Jul 22, 2010
I'm trying to make a software which sends video and audio data to a flash media server by using RTMP protocol. Currently, my program can communicate with a flash media server correctly. RTMP specifications does not describe about the raw data in video/audio messages, so I muxed raw H.264 and AAC data into video/audio messages and sent to the server. The server seems to accept them, but a video player cannot playback the stream sending from the server. The player just says "Loading..." For a test purpose, I sniffed the network packets between Wirecast and the flash media server and ripped off only video and audio data. Then, I muxed those data into video/audio message and sent to the flash media server. In this case, the video player connected to the server can playback the stream correctly.
I checked the stream sent from Wirecast, the stream seems not to be H.264 raw data because those data are not started from 0x17 instead of H.264 start code. With those situation, I am wondering what kind of container format I should use for H.264/AAC data to the flash media server.
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Aug 25, 2009
I ran a simple live video streaming application for the first time with actual users and ran into a couple of serious performance issues that had not turned up during testing. In this instance there was one video stream from a live web cam and used FMLE at 150 kbps using VP6 and MP3 @22k. There were 16 clients and everything worked pretty good for about 30 minutes. (although some clients said their audio and video were out of sync by up to 3 seconds)
Then individual clients would have either the video freeze or the video would continue and the audio would stop. These clints had to "disconnect" and then "connect" again to the application. This happened to all of the clients at one time or another for several minutes. I stopped and restarted the FMLE with progessively lower bandwidth settings down to 75 kbps but still clients were having the same issue.
I eventually stopped the FMLE and used the applications built in publisher at 45 kbps and that seemed to eliminate the freeze/dropping issue. But of course the video quality was very poor and some clients still reported that the audio was out of sync with the video. The server hosting the FMS application is a quad processor dell with lots of memory and network connectivity. The Flash Media Admin Console performance graph showed the total Bandwidth as 3 Mbps at maximum.
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Apr 1, 2012
Is there a way to stream and audio line level feed rather than the audio from a computer's microphone?
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May 25, 2009
As titled, what is the way to record video/audio files using Flash Meida Server through rmtp, and allow users to access the recorded files through http?What I am trying to do, is to record a user's microphone's input and save it to the server.fterwards, I would like other users to be able to access the recorded files and mainuplating the audio data, by computeSpectrum(), to do some visualization of the audio. As I know computeSpectrum() cannot work on streaming files, so I think I need to access the recorded files using http instead of rmtp. Is that true?
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Feb 15, 2011
I am developing Video Chat over Ip (including audio and text too). But I am unable to get the proper startup material for my desktop application.
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Sep 17, 2009
what the best way would be to add a delay of about 120s. This is for a videogame shout casting company and in order to prevent cheating we need to make sure that the stream is at least delayed 120s.
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Mar 15, 2010
I'm doing some tests with FMS and live streaming, but I observe quite long delays. When the stream is first accessed, the latency is around 3-5 seconds, which is acceptable. But as we watch the stream for about 30 minutes or more, the latency grows to around 20 seconds, which is just too much. What settings should I look at to keep the latency / delay minimal?
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Oct 21, 2010
I use FMS 3.5 and i have same problem.....the delay of live video from the studio to clients is big, 10 seconds if i restart the server. After one day of staying on, the delay reaches 1 minute or 2.
The FMS is connected to 1 Gibabyte internet fiber, and the stream is VP6, 500kbps video and 128kbps audio, 720x576 resolution. Server Quad 3.0Ghz, 4 Gb Ram.
Please help me to minimize the delay. What i must write in application.xml from live folder?????? Is there a command. I don't want to make buffer, i want the clients to receive live stream, if the stream is buffering i want to play it jumping that sequence, to maintain the live aspect,not to delay it if the clients doesn't have a good internet conection.
Let's suppose i have 1 FMS, 1 Media Encoder, and 2 computers with flash player on the same Switch ( Local area Network). I've made some tests and the delay i get is minimum 5 seconds.
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Nov 25, 2010
I've build a simple video chat application. The problem is that there is a delay of seconds between video display i.e. user1 video motion change displayed bit late at the user2 window. I'm using FMS 3.5 and FLEX.. IS THIS PROBLEM RELATED TO THE BANDWIDTH. My FMS bandwidth is 256kbps.
[Code]...
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Apr 12, 2012
HTTP broadcast delay is too long, I do a test in the LAN, send video using FME 3.2 the flow FMS4.5 server, use the sample folder under the videoplayer to play live video streams, using HTTP delay of 10 seconds or more,(RMTP play live rarely delay), who can tell me, how can I do this problem can solve the delay!
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Mar 27, 2012
im looking for a script that can record audio from a mic and save it to a fms server i came across a video email script but would like to have just a audio one that can do the samething as the video email with out the video part.
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Jun 3, 2010
I'v made an application with all the default codec and settings provided by adobe to publish live video using FMS. I've made two swfs one is for publishing live video and the other is for viewing the published stream (telecast). When I'm publishing the live video on My laptop using the default web Cam and mic attached to the Dell laptop then after 2- 3 minutes delay on the telecast side start increasing and it keep on increasing continuously .At the same time when I use my desktop PC by attaching external Web Cam and mic to publish, delay on my Telecast side is consistent ,it never increase. I found the problem is with the Laptop's mic. Can anybody please suggest me why it is happening, and is there any solution to it.
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Jul 5, 2011
My clients use Flash Media Live Encoder to publish the audio+video to my server. In some case, I want to allow my clients to publish only Audio and no video but I cannot control it via the FMLE, they can even select the video to publish.
I wanted to know if there is any way in which on the server side, I can allow my client to publish only Audio and no Video?
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Nov 5, 2009
I want to create dj mixer aplication (AS2). Something like this: ttp://activeden.net/item/dj-mixer/10276How I can record sound?
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Aug 11, 2011
Is it possible to mix audio streams in fms (like fmg)?
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Apr 7, 2012
I'm trying to setup an audio-only, on-demand HLS stream in FMS 3.5. I have no problems streaming the sample f4v files via HLS, nor do I have any issues streaming the mp3 files via RTMP to a Flash client. However, when I try to stream a sample mp3 via HLS (the mp3 file is located in the same directory as the sample f4v's), I get a 404 error. I can't find anything in the documentation about streaming audio via HLS on-demand.
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Nov 17, 2008
How can we record audio in Flash Media server as MP3 format?
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Apr 15, 2009
I want to set the bit rate of audio and video (48,96.128 kbps) at the time of live streaming . i m not using the flash media live encoder because i have to make it as web applicaton. can any one tell me how to set bit rate.
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Jan 28, 2010
Our company has a Flex application (3.0.2) that is having a problem with audio dropping out in Windows 7. The problem appears worse with a wireless connection, but it can't be consistently reproduced there, either. The only thing known for sure is that the problem has not been seen on any other version of Windows.
The application thinks the audio is playing, because it is calling the appropriate event listeners triggered when the audio completes and when any audio cue points are hit. The majority of our audio is streaming via Flash Media Server (3,0,2,201), but the problem was also seen using embedded sound effects. In one instance, several clicks of a button triggered an error saying the sound effect could not be loaded, and then about a minute later, all the sound effects played at once and the user could then continue with the application.
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Oct 21, 2010
I can't find the setttings for have a least latency as possible, either the video quality is bad or the latency is up than 5 secondes...What should i do?
[Code]...
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Jan 3, 2012
We have setup a brand new FMS 4.5 for http streaming to ios devices. We are feeding the source via rtmp to livepkgr application. Upon digesting the iOS feed via the url below, there is no audio being passed. I can check the stream using the rtmp protocol and there is audio. [URL]..
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Apr 5, 2012
"To serve streams over a cellular network, one of the streams must be audio-only. For more information, see HTTP Live Streaming Overview.To publish an audio-only stream, enter the following in the Flash Media Encoder Stream field:livestream%i?adbe-live-event=liveevent&adbe-audio-stream-name=livestream1_audio_only&adbe-audio-stream-src=livestream1If the encoder specifies individual query strings for each stream, use individual stream names instead of the variable %i:livestream1?adbe-live-event=liveevent&adbe-audio-stream-name=livestream1_audio_onlylivestream2?adbe-live-event=liveevent&adbe-audio-stream-name=livestream2_audio_onlyTo generate a set-level variant playlist when using an audio-only stream, specify the audio codec of the audio-nly stream. Specify the audio and the video codec of the streams that contain audio and video.For more information about using the Set-level F4M/M3U8 File Generator, see Publish and play live multi-bitrate streams over HTTP.
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Jun 11, 2009
If I publish using an Adobe Flash Media Encoder 2.5 or a normal client a netstream with codec NellyMoser at 8Khz, the audio stream is incomprehensible for a MAC OS or a Linux Adobe Player.Steps to reproduce:
1. Create a new Actionscript Project in Flex Builder, for example: AdobeBug.
2. Start a Flash Media Server 3.5 in localhost(rtmp://localhost/live).
3. Insert the following code in the Default Application file: AdobeBug.[code]
4. Compile and play the file. 5. Run the Adobe Flash Media Administration Console and play the stream named livestream using a Linux or a Mac OS system, but not a Windows system. This stream should be a Nellymoser audio at 8KHz.
Playback starts, but audio is unintelligible in Linux and Mac OS Adobe Flash player.Doesn't happen if I listen the stream using a Adobe Flash Player plugin or a Flash Media Administration Console for Windows systems.
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Aug 18, 2009
We use a Flash component to allow a user on our web site to record from a Webcam on to our own Flash Media Server. The problem we are having is that the video in a 30 second FLV freezes at the 7th second but the audio continues. The video unfreezes after a couple of seconds but never catches up with the audio. At the very end there's a "Fast-forwarding" of video for the last few seconds so that at literally the last moment, everything's in sync. This happens for almost all of our recordings. Has anyone experienced this type of behavior?
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Oct 27, 2009
I have two audio streams on the same client.i need to record both streams in a single flv file.can this be done?the below stub is for visual purposes.
stream0 = new NetStream();
stream0.publish("pub0");
stream0.attachAudio(mic0);
[code]....
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Nov 20, 2009
We have the Flash Media Interactive Serve 3.5. Is there an automated way to strip the audio from video files and stream on FMIS? .
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Aug 13, 2010
i'm trying to build some kind of online radio. Therefore i'll be streaming audio (mp3) in real time. i have a play-list on my server and the idea is for this play-list to play all day long, but on the client side the user can only do play and stop the music.
The problem is when one music stops and the next one starts i need the server to send not only the new audio but also all the info about this file: duration, author and music name, this way my player can show a play /stop and all the info about the current music playing.Until now i've only come across with video live streaming, but very little information on how to do a live transmission of audio.
ps: the only info on streaming audio that i've found so far is about audio on demand, but the way i want things to happen the client can't chose the music.
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Aug 20, 2010
In my tracking I records the voice, it generates the file (if i download I was able to listen to it), but if I try to play, it doesn´t play. If I use FP9 r124 it works, using FP10r53 or the latest 10.1.82.76 it fails !!! all with the same SWFhas anyone experienced the same? I can not ask everyone to downgrade the flash player.
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