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How do I get more keyframes per video?

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	How do I get more keyframes per video? by Ktu-2 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hey wonderful list, I'm working on an app that is recording up to 90 seconds of a video per user. During playback of the recorded videos, I get all of those issues about Red5 only displaying the keyframe, and it jumps around a lot. What ways can I add more keyframes to the recorded videos if I'm using the oflaDemo? thanks Ktu _______________________________________________ Red5 mailing list Red5@... http://osflash.org/mailman/listinfo/red5_osflash.org
	Re: How do I get more keyframes per video? by Dominick Accattato-2 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message hrmm, the default should jump all that much. you should check out the flash Camera properties like quality, bitrate etc.. On Wed, Oct 28, 2009 at 2:41 PM, Ktu <ktu_flash@...> wrote: Hey wonderful list, I'm working on an app that is recording up to 90 seconds of a video per user. During playback of the recorded videos, I get all of those issues about Red5 only displaying the keyframe, and it jumps around a lot. What ways can I add more keyframes to the recorded videos if I'm using the oflaDemo? thanks Ktu _______________________________________________ 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: How do I get more keyframes per video? by Ktu-2 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Well I found on some blog post that setting quality and bitrate = 0 on the camera would tell flash to use as much bandwidth as possible to keep the necessary framerate. I thought this would make it easier to record a constant framerate. Could this be causing the issue especially with user using a poor connection? K On Wed, Oct 28, 2009 at 6:29 PM, Dominick Accattato <dominick@...> wrote: hrmm, the default should jump all that much. you should check out the flash Camera properties like quality, bitrate etc.. On Wed, Oct 28, 2009 at 2:41 PM, Ktu <ktu_flash@...> wrote: Hey wonderful list, I'm working on an app that is recording up to 90 seconds of a video per user. During playback of the recorded videos, I get all of those issues about Red5 only displaying the keyframe, and it jumps around a lot. What ways can I add more keyframes to the recorded videos if I'm using the oflaDemo? thanks Ktu _______________________________________________ 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: How do I get more keyframes per video? 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. One can set the amount of keyframes to be send to the server ; http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/media/Camera.html#setKeyFrameInterval%28%29 "A value of 1 means that every frame is a keyframe, a value of 3 means that every third frame is a keyframe. Acceptable values are 1 through 48" Afaik the default is 15 meaning once every 15 frames Flash would send a keyframe. If your camera is only sending say 7 fps then that means you'd only have one keyframe per 2 seconds. If you'd want to seek in the recorded FLV that would result in very jerky scrubbing. Warning ; don't set that interval too low or you'd saturate your uplink since a keyframe is larger than an interpolated frame ofcourse. Walter ----- Original Message ----- From: dominick@... To: red5@... Sent: Wednesday, 28 October 2009 23:29 Subject: Re: [Red5] How do I get more keyframes per video? hrmm, the default should jump all that much. you should check out the flash Camera properties like quality, bitrate etc.. On Wed, Oct 28, 2009 at 2:41 PM, Ktu <ktu_flash@...> wrote: Hey wonderful list, I'm working on an app that is recording up to 90 seconds of a video per user. During playback of the recorded videos, I get all of those issues about Red5 only displaying the keyframe, and it jumps around a lot. What ways can I add more keyframes to the recorded videos if I'm using the oflaDemo? thanks Ktu _______________________________________________ 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: How do I get more keyframes per video? by Ktu-2 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Thank you so much. I hope this is what is causing the problem. I am investigating this for a co-worker of mine and I feel pretty silly not having checked the AS3 Docs first. thanks Ktu On Wed, Oct 28, 2009 at 9:02 PM, Walter Tak <walter@...> wrote: One can set the amount of keyframes to be send to the server ; http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/media/Camera.html#setKeyFrameInterval%28%29 "A value of 1 means that every frame is a keyframe, a value of 3 means that every third frame is a keyframe. Acceptable values are 1 through 48" Afaik the default is 15 meaning once every 15 frames Flash would send a keyframe. If your camera is only sending say 7 fps then that means you'd only have one keyframe per 2 seconds. If you'd want to seek in the recorded FLV that would result in very jerky scrubbing. Warning ; don't set that interval too low or you'd saturate your uplink since a keyframe is larger than an interpolated frame ofcourse. Walter ----- Original Message ----- From: dominick@... To: red5@... Sent: Wednesday, 28 October 2009 23:29 Subject: Re: [Red5] How do I get more keyframes per video? hrmm, the default should jump all that much. you should check out the flash Camera properties like quality, bitrate etc.. On Wed, Oct 28, 2009 at 2:41 PM, Ktu <ktu_flash@...> wrote: Hey wonderful list, I'm working on an app that is recording up to 90 seconds of a video per user. During playback of the recorded videos, I get all of those issues about Red5 only displaying the keyframe, and it jumps around a lot. What ways can I add more keyframes to the recorded videos if I'm using the oflaDemo? thanks Ktu _______________________________________________ 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