recommended bitrate for full screen TV

gavin2812 · 14th February 2006, 23:09

hi, quick question, what bitrate would one use for LIVE high quality fullscreen tv encoding?

I want to broadcast a LIVE video stream from one location to another and ideally in full screen size and with high (near TV) quality, what encoding settings should I use?

Thanks in advance

sns2015 · 15th February 2006, 00:50

That all depends ond your internet connection and the source of live stream. If this is just for your use you would want the highest possible bitrate. Also, x264 might be a good idea (but you'll need a good computer to encode that live, may want to stick with VP6). Definately you'll want AAC+ audio. As for the resolution you just need to pick what looks best to you. Do some tests with a live source and see how it looks to you. (Normal video resolution is 720x480, but the pixels aren't square so you'll want to go with 640x480)

sankt · 15th February 2006, 00:56

Your probably looking at encoding video in excess of 1 meg for high definition, full screen display.

This would be pretty impractical, unless you plan on running this on a high speed Local Area Network or you have access to a Fiber Optic network connection.

gavin2812 · 15th February 2006, 09:20

hi, thanks for replies, not necessary high definition, but something that would be suitable to watch for a long time as if it was TV (not digital or satellite!)

I will try the VP6 and aac+ and see how i get on, where could i find more info on x264?

thanks

i intend to use it to make available to viewers within a wifi network, any ideas on limitations (the network is running at 22mbps)

thanks

sankt · 15th February 2006, 10:44

If your intend on using wifi, you could set up the node for multicast and bandwidth wouldnt be a problem.

The viewers would need to load a winamp plugin to watch the multicast stream though, and you would need to convert your stream to multicast format. ( That would be easy. )

gavin2812 · 15th February 2006, 14:02

that sounds exactly what im looking for!!

is there any further documentation on that?

thanks

slavas · 15th February 2006, 15:04

:hint: VideoLAN for everything

gavin2812 · 15th February 2006, 19:04

hi,

can anyone give me more info on the multicast node suggested by sankt as this is exactly what i need. also, what plugin will i need for the viewers winamp?

thanks in advance

sankt · 15th February 2006, 21:50

You need to make sure that the wifi node you plan on using is multicast enabeled.

Like Slavas suggested, you could use Video Lan for both "transmitting" and "receiving". It is allready multicast enabeled.

www.videolan.org

gavin2812 · 18th February 2006, 09:57

hi, im up and running (apart from the streaming over the wifi part, thats yet to come!) i have a question, hopefully someone may be able to help:

im currently testing my stream on VP7 and AAC+ and happy with the picture quality, its slightly pixelated, but that may be becuase the PC im testing it on isnt powerfull anough to encode at 640*480, so ive had to leave it at 320*240 for now, hence the pixelation i guess...

the question is... on the capture part, i have some options that i dont undertand, wich compression should i choose and whats the diffrence?

RGB 555 (16 bit)
RGB24
YUY2
YUY9
I420

thanks

any further info on the multicast node bit would be much appreciated

someone mentioned videolan, but the version i have doesnt seem to be able to stream (which i know must be wrong! i guess is just cabt find it!)

its verison 0.8.4a

thanks!

enzo996 · 18th February 2006, 11:34

hi there,
can you give me more details please how you got vp7 with aac working for live streaming? what tools are you using? im very interested in this too but i havn't found a solution yet.

greetings
chris

Daijoubu · 20th February 2006, 08:28

Since you're on a LAN and got spare bandwidth, you may aswell use mencoder (part of mplayer) or VideoLAN and just stream MPEG1, much easier to encode...

gavin2812 · 6th June 2006, 17:35

hi any further info anyone can give me on this??

Quote:

If your intend on using wifi, you could set up the node for multicast and bandwidth wouldnt be a problem.

How would I do this?

i am hoping to broadcast video over a wifi network running at 22mbps and looking at what my limitations are going to be, also interested on what bitrate and settings to use for a good watchable quality for full-screen viewing

thanks for your comments.

14th February 2006, 23:09	#1
gavin2812 Senior Member Join Date: Jan 2006 Posts: 139	recommended bitrate for full screen TV hi, quick question, what bitrate would one use for LIVE high quality fullscreen tv encoding? I want to broadcast a LIVE video stream from one location to another and ideally in full screen size and with high (near TV) quality, what encoding settings should I use? Thanks in advance

15th February 2006, 00:56	#3
sankt Moderator Join Date: Apr 2003 Location: www.ScenicTelevision.com Posts: 2,976	Your probably looking at encoding video in excess of 1 meg for high definition, full screen display. This would be pretty impractical, unless you plan on running this on a high speed Local Area Network or you have access to a Fiber Optic network connection. Scenic Television is your ambient window to the world - - www.ScenicTelevision.com

15th February 2006, 10:44	#5
sankt Moderator Join Date: Apr 2003 Location: www.ScenicTelevision.com Posts: 2,976	If your intend on using wifi, you could set up the node for multicast and bandwidth wouldnt be a problem. The viewers would need to load a winamp plugin to watch the multicast stream though, and you would need to convert your stream to multicast format. ( That would be easy. ) Scenic Television is your ambient window to the world - - www.ScenicTelevision.com

15th February 2006, 15:04	#7
slavas Major Dude Join Date: Apr 2003 Location: kaimas Å¡alia AnykÅ¡ÄiÅ³ Posts: 680	:hint: VideoLAN for everything http://slavo.gigas.googlepages.com/

15th February 2006, 21:50	#9
sankt Moderator Join Date: Apr 2003 Location: www.ScenicTelevision.com Posts: 2,976	You need to make sure that the wifi node you plan on using is multicast enabeled. Like Slavas suggested, you could use Video Lan for both "transmitting" and "receiving". It is allready multicast enabeled. www.videolan.org Scenic Television is your ambient window to the world - - www.ScenicTelevision.com

15th February 2006, 00:50	#2
sns2015 Senior Member Join Date: Mar 2005 Posts: 218	That all depends ond your internet connection and the source of live stream. If this is just for your use you would want the highest possible bitrate. Also, x264 might be a good idea (but you'll need a good computer to encode that live, may want to stick with VP6). Definately you'll want AAC+ audio. As for the resolution you just need to pick what looks best to you. Do some tests with a live source and see how it looks to you. (Normal video resolution is 720x480, but the pixels aren't square so you'll want to go with 640x480)

15th February 2006, 09:20	#4
gavin2812 Senior Member Join Date: Jan 2006 Posts: 139	hi, thanks for replies, not necessary high definition, but something that would be suitable to watch for a long time as if it was TV (not digital or satellite!) I will try the VP6 and aac+ and see how i get on, where could i find more info on x264? thanks i intend to use it to make available to viewers within a wifi network, any ideas on limitations (the network is running at 22mbps) thanks

15th February 2006, 14:02	#6
gavin2812 Senior Member Join Date: Jan 2006 Posts: 139	that sounds exactly what im looking for!! is there any further documentation on that? thanks

15th February 2006, 19:04	#8
gavin2812 Senior Member Join Date: Jan 2006 Posts: 139	hi, can anyone give me more info on the multicast node suggested by sankt as this is exactly what i need. also, what plugin will i need for the viewers winamp? thanks in advance

18th February 2006, 09:57	#10
gavin2812 Senior Member Join Date: Jan 2006 Posts: 139	hi, im up and running (apart from the streaming over the wifi part, thats yet to come!) i have a question, hopefully someone may be able to help: im currently testing my stream on VP7 and AAC+ and happy with the picture quality, its slightly pixelated, but that may be becuase the PC im testing it on isnt powerfull anough to encode at 640480, so ive had to leave it at 320240 for now, hence the pixelation i guess... the question is... on the capture part, i have some options that i dont undertand, wich compression should i choose and whats the diffrence? RGB 555 (16 bit) RGB24 YUY2 YUY9 I420 thanks any further info on the multicast node bit would be much appreciated someone mentioned videolan, but the version i have doesnt seem to be able to stream (which i know must be wrong! i guess is just cabt find it!) its verison 0.8.4a thanks!

18th February 2006, 11:34	#11
enzo996 Junior Member Join Date: Feb 2006 Posts: 1	hi there, can you give me more details please how you got vp7 with aac working for live streaming? what tools are you using? im very interested in this too but i havn't found a solution yet. greetings chris

20th February 2006, 08:28	#12
Daijoubu Member Join Date: Jan 2003 Location: Montreal QC Canada Posts: 75	Since you're on a LAN and got spare bandwidth, you may aswell use mencoder (part of mplayer) or VideoLAN and just stream MPEG1, much easier to encode...

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