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Red5 Audio Quality Issues

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	Red5 Audio Quality Issues by Paul Johnston-8 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message I've just developed (after weeks of pain and stress) a full videoconferencing and whiteboard solution in Adobe AIR utilising a Red5 (0.9.0) server. WOOHOO However, delivered to client and been told that "audio is not as good as skype" and they want me to "fix it". I do get why skype works better for them, but it's frustrating as this was the solution they agreed to. Given that this is a Flex based client utilising a Red5 server, what are the most favourable (note: not necessarily best, but cleanest on lowish bandwidth) audio settings to use within Flex to get the mic quality as close as possible to skype? As far as I can tell, there are issues with using this as a video conferencing tool. Am I wrong? It seems to cancel audio too quickly and I'm not sure sound goes both ways properly. Have tried setting the silence level and various other things. The sound appears to be ok in terms of clarity (understanding what is said) though. So: 1) what are the best lower-bandwidth audio quality settings (given that I don't have unlimited bandwidth)? 2) what are the best settings for the Microphone object in the Flex/AIR client? Thanks Paul _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: Red5 Audio Quality Issues by Thomas-128 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hi, I just performed a new test with someone in an airport with an absolutely crappy connection around 5kB/s upload (yes you read well), video was horrible, but the audio quality remained perfectly acceptable, close to telephone quality. Flash can be very picky on the settings you give him for Camera and Microphone, so try plenty stuff and see what works best for you. -- VOD & visioconference - http://www.digiprof.tv _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: Red5 Audio Quality Issues by Andy Shaules :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Some parts of this message have been removed. Learn more about Nabble's security policy. just go to your microphone code and change the rate to 22 or 44 http://livedocs.adobe.com/flex/3/langref/flash/media/Microphone.html#rate Its there bandwidth so set it as high as they want. I assume you wrote the code that handles the mic. ----- Original Message ----- From: paul.vidainnovation@... To: red5@... Sent: Tuesday, November 03, 2009 12:21 PM Subject: [Red5] Red5 Audio Quality Issues I've just developed (after weeks of pain and stress) a full videoconferencing and whiteboard solution in Adobe AIR utilising a Red5 (0.9.0) server. WOOHOO However, delivered to client and been told that "audio is not as good as skype" and they want me to "fix it". I do get why skype works better for them, but it's frustrating as this was the solution they agreed to. Given that this is a Flex based client utilising a Red5 server, what are the most favourable (note: not necessarily best, but cleanest on lowish bandwidth) audio settings to use within Flex to get the mic quality as close as possible to skype? As far as I can tell, there are issues with using this as a video conferencing tool. Am I wrong? It seems to cancel audio too quickly and I'm not sure sound goes both ways properly. Have tried setting the silence level and various other things. The sound appears to be ok in terms of clarity (understanding what is said) though. So: 1) what are the best lower-bandwidth audio quality settings (given that I don't have unlimited bandwidth)? 2) what are the best settings for the Microphone object in the Flex/AIR client? Thanks Paul _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: Red5 Audio Quality Issues by Walter Tak :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Some parts of this message have been removed. Learn more about Nabble's security policy. Yep it's quite easy to broadcast near crystal clear 44 khz mono sound with Flash. It doesn't eat that much bandwidth neither tbh. If you didn't set the microphone rate it defaults to a crappy 11 Khz which may sound like AM radio. W. ----- Original Message ----- From: bowljoman@... To: red5@... Sent: Tuesday, 03 November 2009 21:31 Subject: Re: [Red5] Red5 Audio Quality Issues just go to your microphone code and change the rate to 22 or 44 http://livedocs.adobe.com/flex/3/langref/flash/media/Microphone.html#rate Its there bandwidth so set it as high as they want. I assume you wrote the code that handles the mic. ----- Original Message ----- From: paul.vidainnovation@... To: red5@... Sent: Tuesday, November 03, 2009 12:21 PM Subject: [Red5] Red5 Audio Quality Issues I've just developed (after weeks of pain and stress) a full videoconferencing and whiteboard solution in Adobe AIR utilising a Red5 (0.9.0) server. WOOHOO However, delivered to client and been told that "audio is not as good as skype" and they want me to "fix it". I do get why skype works better for them, but it's frustrating as this was the solution they agreed to. Given that this is a Flex based client utilising a Red5 server, what are the most favourable (note: not necessarily best, but cleanest on lowish bandwidth) audio settings to use within Flex to get the mic quality as close as possible to skype? As far as I can tell, there are issues with using this as a video conferencing tool. Am I wrong? It seems to cancel audio too quickly and I'm not sure sound goes both ways properly. Have tried setting the silence level and various other things. The sound appears to be ok in terms of clarity (understanding what is said) though. So: 1) what are the best lower-bandwidth audio quality settings (given that I don't have unlimited bandwidth)? 2) what are the best settings for the Microphone object in the Flex/AIR client? Thanks Paul _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: Red5 Audio Quality Issues by Paul Johnston-7 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Thanks all. Confirming what I thought. Have played with quite a few settings, but not quite managed to get it quite right yet. Have tried rate at 22 but not 44. I think it may be more to do with the silence level settings I've been using... although the lower the silenceLevel the more feedback occurs... And to reply - yes I do control the settings for the mic. Thanks! 2009/11/3 Walter Tak <walter@...> Yep it's quite easy to broadcast near crystal clear 44 khz mono sound with Flash. It doesn't eat that much bandwidth neither tbh. If you didn't set the microphone rate it defaults to a crappy 11 Khz which may sound like AM radio. W. ----- Original Message ----- From: bowljoman@... To: red5@... Sent: Tuesday, 03 November 2009 21:31 Subject: Re: [Red5] Red5 Audio Quality Issues just go to your microphone code and change the rate to 22 or 44 http://livedocs.adobe.com/flex/3/langref/flash/media/Microphone.html#rate Its there bandwidth so set it as high as they want. I assume you wrote the code that handles the mic. ----- Original Message ----- From: paul.vidainnovation@... To: red5@... Sent: Tuesday, November 03, 2009 12:21 PM Subject: [Red5] Red5 Audio Quality Issues I've just developed (after weeks of pain and stress) a full videoconferencing and whiteboard solution in Adobe AIR utilising a Red5 (0.9.0) server. WOOHOO However, delivered to client and been told that "audio is not as good as skype" and they want me to "fix it". I do get why skype works better for them, but it's frustrating as this was the solution they agreed to. Given that this is a Flex based client utilising a Red5 server, what are the most favourable (note: not necessarily best, but cleanest on lowish bandwidth) audio settings to use within Flex to get the mic quality as close as possible to skype? As far as I can tell, there are issues with using this as a video conferencing tool. Am I wrong? It seems to cancel audio too quickly and I'm not sure sound goes both ways properly. Have tried setting the silence level and various other things. The sound appears to be ok in terms of clarity (understanding what is said) though. So: 1) what are the best lower-bandwidth audio quality settings (given that I don't have unlimited bandwidth)? 2) what are the best settings for the Microphone object in the Flex/AIR client? Thanks Paul _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: Red5 Audio Quality Issues by Paul Johnston-8 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Thanks all. Confirming what I thought. Have played with quite a few settings, but not quite managed to get it quite right yet. Have tried rate at 22 but not 44. I think it may be more to do with the silence level settings I've been using... although the lower the silenceLevel the more feedback occurs... And to reply - yes I do control the settings for the mic. Thanks! 2009/11/3 Walter Tak <walter@...> Yep it's quite easy to broadcast near crystal clear 44 khz mono sound with Flash. It doesn't eat that much bandwidth neither tbh. If you didn't set the microphone rate it defaults to a crappy 11 Khz which may sound like AM radio. W. ----- Original Message ----- From: bowljoman@... To: red5@... Sent: Tuesday, 03 November 2009 21:31 Subject: Re: [Red5] Red5 Audio Quality Issues just go to your microphone code and change the rate to 22 or 44 http://livedocs.adobe.com/flex/3/langref/flash/media/Microphone.html#rate Its there bandwidth so set it as high as they want. I assume you wrote the code that handles the mic. ----- Original Message ----- From: paul.vidainnovation@... To: red5@... Sent: Tuesday, November 03, 2009 12:21 PM Subject: [Red5] Red5 Audio Quality Issues I've just developed (after weeks of pain and stress) a full videoconferencing and whiteboard solution in Adobe AIR utilising a Red5 (0.9.0) server. WOOHOO However, delivered to client and been told that "audio is not as good as skype" and they want me to "fix it". I do get why skype works better for them, but it's frustrating as this was the solution they agreed to. Given that this is a Flex based client utilising a Red5 server, what are the most favourable (note: not necessarily best, but cleanest on lowish bandwidth) audio settings to use within Flex to get the mic quality as close as possible to skype? As far as I can tell, there are issues with using this as a video conferencing tool. Am I wrong? It seems to cancel audio too quickly and I'm not sure sound goes both ways properly. Have tried setting the silence level and various other things. The sound appears to be ok in terms of clarity (understanding what is said) though. So: 1) what are the best lower-bandwidth audio quality settings (given that I don't have unlimited bandwidth)? 2) what are the best settings for the Microphone object in the Flex/AIR client? Thanks Paul _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org -- Vida Innovation (PJ Net Solutions Ltd T/A Vida) Tel: 07984 820767 Web: http://www.vidainnovation.com Registered Number: 4131671 Office Address: 113 Victoria Street, Wolverton, Milton Keynes, MK12 5HQ _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: Red5 Audio Quality Issues by Walter Tak :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Some parts of this message have been removed. Learn more about Nabble's security policy. Thing is there is way more intelligence in Skype than ordinary users know. Besides that Skype can do with audio-data whatever they want , even change a codec and push a new version to all users all over the globe. With Flash you have to develop manual hacks to try to emulate the same. E.g. with the silence levels you could add a slider so users can control that themselves instead of relying on one single fixed number for all users. I'd add a volume/VU bar as well and a slider for the recording volume. Let users toy around a bit. You can then adjust the maximum recording level automatically if you'd see very high activity level ( > 90% ) for a longer period of time ; that would result in very dynamic recording volume. Obviously you'd need to keep recording levels in some sort of array (FIFO-buffer) and then calculate the average activity and act on that (e.g. reducing the recording volume with 10% after 1 second etc etc) Also do not use myMic.setLoopBack(true); W. ----- Original Message ----- From: paul.vidainnovation@... To: red5@... Sent: Wednesday, 04 November 2009 11:06 Subject: Re: [Red5] Red5 Audio Quality Issues Thanks all. Confirming what I thought. Have played with quite a few settings, but not quite managed to get it quite right yet. Have tried rate at 22 but not 44. I think it may be more to do with the silence level settings I've been using... although the lower the silenceLevel the more feedback occurs... And to reply - yes I do control the settings for the mic. Thanks! 2009/11/3 Walter Tak <walter@...> Yep it's quite easy to broadcast near crystal clear 44 khz mono sound with Flash. It doesn't eat that much bandwidth neither tbh. If you didn't set the microphone rate it defaults to a crappy 11 Khz which may sound like AM radio. W. ----- Original Message ----- From: bowljoman@... To: red5@... Sent: Tuesday, 03 November 2009 21:31 Subject: Re: [Red5] Red5 Audio Quality Issues just go to your microphone code and change the rate to 22 or 44 http://livedocs.adobe.com/flex/3/langref/flash/media/Microphone.html#rate Its there bandwidth so set it as high as they want. I assume you wrote the code that handles the mic. ----- Original Message ----- From: paul.vidainnovation@... To: red5@... Sent: Tuesday, November 03, 2009 12:21 PM Subject: [Red5] Red5 Audio Quality Issues I've just developed (after weeks of pain and stress) a full videoconferencing and whiteboard solution in Adobe AIR utilising a Red5 (0.9.0) server. WOOHOO However, delivered to client and been told that "audio is not as good as skype" and they want me to "fix it". I do get why skype works better for them, but it's frustrating as this was the solution they agreed to. Given that this is a Flex based client utilising a Red5 server, what are the most favourable (note: not necessarily best, but cleanest on lowish bandwidth) audio settings to use within Flex to get the mic quality as close as possible to skype? As far as I can tell, there are issues with using this as a video conferencing tool. Am I wrong? It seems to cancel audio too quickly and I'm not sure sound goes both ways properly. Have tried setting the silence level and various other things. The sound appears to be ok in terms of clarity (understanding what is said) though. So: 1) what are the best lower-bandwidth audio quality settings (given that I don't have unlimited bandwidth)? 2) what are the best settings for the Microphone object in the Flex/AIR client? Thanks Paul _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org -- Vida Innovation (PJ Net Solutions Ltd T/A Vida) Tel: 07984 820767 Web: http://www.vidainnovation.com Registered Number: 4131671 Office Address: 113 Victoria Street, Wolverton, Milton Keynes, MK12 5HQ _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org