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Medrea
10003 Posts
So I set my bitrate 4.5 mb/s, think thats too high? I noticed sometimes my stream will turn to shit, I think maybe the twitch RTMP isnt fast enough? Ive tried other RTMP locations BTW, this is the best one. Also I was told that if you set the bitrate too high some people wont be able to watch it because they dont have good enough internet, is that true? | ||
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Boblhead
United States2577 Posts
On September 24 2012 15:07 Medrea wrote: I have 20down/10up internet and my speedtest results average about 7 mb/s up to a location near the twitch RTMP Im sending data to. So I set my bitrate 4.5 mb/s, think thats too high? I noticed sometimes my stream will turn to shit, I think maybe the twitch RTMP isnt fast enough? Ive tried other RTMP locations BTW, this is the best one. Also I was told that if you set the bitrate too high some people wont be able to watch it because they dont have good enough internet, is that true? Personally I wouldn't stream anything more than like 2.5k until you get partnered, otherwise like you said some people with shitty internet connections won't be able to watch. Why your stream will sometimes turn to shit I guess it just depends on the twitch server and or your ISP, but i suspect that if you did lower your bitrate then you would have no problem with your stream quality. Plus usually daytime is when most traffic is being used and you might not be getting the full 4.5mb/s upload to the twitch server. I would say try 2-3mb/s and see if you get your full 2-3mb/s while your streaming. | ||
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Medrea
10003 Posts
On September 24 2012 17:02 Boblhead wrote: Personally I wouldn't stream anything more than like 2.5k until you get partnered, otherwise like you said some people with shitty internet connections won't be able to watch. Why your stream will sometimes turn to shit I guess it just depends on the twitch server and or your ISP, but i suspect that if you did lower your bitrate then you would have no problem with your stream quality. Plus usually daytime is when most traffic is being used and you might not be getting the full 4.5mb/s upload to the twitch server. I would say try 2-3mb/s and see if you get your full 2-3mb/s while your streaming. Ok then how does this work. If I specify a lower bitrate what happens? Does my CPU have to work harder? Im only using an i5-2500k. I lowered my resolution since that seems to work well with lowering bandwidth. Im still not 100 percent on what the presets even mean. Especially versus the bitrate. I always prefer to lower stream quality versus dropping frames. What does this mean in terms of how I choose my settings? Kudos if you can answer all of that. | ||
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Boblhead
United States2577 Posts
Well what did you lower your streaming resolution to? Most people will agree that like 480p is anywhere from 600-1500kbps, 720p being 1500-3000kbps and 1080p 3000-5000kbps. It works out for you as well since encoding a lower resolution takes some strain off your CPU. now with presets its really preference. The faster the preset the faster your CPU encodes the frames which means if you choose like ultra fast and 1500kbps and like 720p you stream will have a little distortion when moving your screen around in a game. The slower the preset is pretty much just your CPU takes longer to encode which means more CPU strain but overall you can squeeze out a better product with a similar bandwidth usage. So lets take the fast preset with 720p stream @ 1500kbps your stream will look a lot more crisp, but at the cost of more CPU usage. So if you have a decent overclock you shouldn't have a problem streaming 720p on fast preset. There will always be a performance impact on the game, so you just have to find the preset/performance ratio you feel comfortable with. Of course the FPS you choose as well will have impact and the audio bitrate as well. Personally again 24fps is fine takes less strain than 30fps but to the human eye 24 and 30 is little difference. | ||
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Frostfire
United States419 Posts
So confused where to stream to.. I'm not tech savvy at all, so I just put in "rtmp://live.justin.tv/app/'the numbers from my key'" Edit: Nevermind I'm retarded twitch.tv/choisoo932 :DDDDDDDDDDDD | ||
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Medrea
10003 Posts
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ZackAttack
United States884 Posts
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Cyro
United Kingdom20275 Posts
On September 24 2012 15:07 Medrea wrote: I have 20down/10up internet and my speedtest results average about 7 mb/s up to a location near the twitch RTMP Im sending data to. So I set my bitrate 4.5 mb/s, think thats too high? I noticed sometimes my stream will turn to shit, I think maybe the twitch RTMP isnt fast enough? Ive tried other RTMP locations BTW, this is the best one. Also I was told that if you set the bitrate too high some people wont be able to watch it because they dont have good enough internet, is that true? 4.5mbit is probably a bit high, should be fine for most but twitch seems wonky with higher bitrate streams, 3k is a good number. If you are uploading at 3k and somebody only has 2.5k download, they wont be able to watch, pretty simple Bitrate wont affect cpu usage, preset/resolution/fps will, resolution multiplied by FPS is simple, preset is just trading off compression efficiency for encoding ability, sweet spot is Veryfast IMO, if you bump to Superfast you need like double the bitrate for the same quality and only gain like 5-15% encoding speed. An overclocked 2500k (or even stock) you should be able to throw pretty much anything at, with sc2, 720p@60fps@veryfast or 1920x1080@30fps@veryfast (at high resolution streams its best to play game at 16 : 9 as that is most common) are around your limits (i can pretty comfortably do both on an i7 950 without extreme overclock), if you are streaming 1280x800 at 30fps, you should be able to drop a couple presets without a problem but at the bitrates you have avalible you probably wont see a difference unless you are limiting by some quality factor and monitoring bandwidth usage which pretty much nobody does AFAIK. In my experience almost all of the performance hit (lower framerate, laggy feel) from streaming comes from capturing the video, not encoding, so as long as none of the cpu threads that xsplit is using are going above like ~85-90% under stress you shouldnt have major issues, or if cpu usage is low on xsplits threads, you can probably use a slower preset and/or higher resolution without having major adverse effects on your gameplay performance, although capturing screen at higher FPS tends to hurt a lot. Be aware though that different games will use CPU in different ways, and often be harder or easier to encode than sc2, so if you are using anything other than very loose settings you will probably have to do some quick tuning if you are jumping between games. Torchlight 2 for example will load 1 thread of my CPU to 99%, and i have no idea how x/ffsplit would act with taxing settings without affinity set, while GW2 will load CPU on average across threads around ~2.5x harder than sc2 so you have less encoding headroom | ||
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Medrea
10003 Posts
Borderlands 2. 800p 60 FPS 4500 kb/s Superfast preset. i5-2500k + 7970 Im really pleased with how this video turned out wonder if I can keep this up though. I tried with and without Vsync and I think that asking for Vsync is a bit much. in the end I might drop the stream FPS but right now Im amazed Im streaming 60 fps video with just an i5. | ||
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Steelo_Rivers
United States1968 Posts
On September 25 2012 10:14 Medrea wrote: http://www.twitch.tv/medrea/b/333363887 Borderlands 2. 800p 60 FPS 4500 kb/s Superfast preset. i5-2500k + 7970 Im really pleased with how this video turned out wonder if I can keep this up though. I tried with and without Vsync and I think that asking for Vsync is a bit much. in the end I might drop the stream FPS but right now Im amazed Im streaming 60 fps video with just an i5. is bl2 any good? I played the first 5 minutes of bl1 and was not impressed | ||
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Medrea
10003 Posts
I think people have a big bias around the whole cell-shaded thing. Thats not going away. Borderlands 2 is cell-shaded. On topic. This game is very friendly with streaming so far. At least I think so. | ||
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Steelo_Rivers
United States1968 Posts
On September 25 2012 10:52 Medrea wrote: Borderlands seems to have a love/hate thing going on with it. I really liked the first Borderlands. I think people have a big bias around the whole cell-shaded thing. Thats not going away. Borderlands 2 is cell-shaded. On topic. This game is very friendly with streaming so far. At least I think so. I love the cell shaded graphics. It reminds me of games like Jet Set Radio Future and Dragon Ball Budokai II and III | ||
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wussleeQ
United States3130 Posts
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Cyro
United Kingdom20275 Posts
On September 25 2012 10:14 Medrea wrote: http://www.twitch.tv/medrea/b/333363887 Borderlands 2. 800p 60 FPS 4500 kb/s Superfast preset. i5-2500k + 7970 Im really pleased with how this video turned out wonder if I can keep this up though. I tried with and without Vsync and I think that asking for Vsync is a bit much. in the end I might drop the stream FPS but right now Im amazed Im streaming 60 fps video with just an i5. People underestimate encoding power a bunch, especially those who dont understand resolution. "1080p" being 2.25x "720p", Destiny's original "amazing" 1080p30 stream was done at Faster preset on a first gen i7, there is plenty of room for trading down resolution to FPS, and hyperthreading or not, a sandy bridge quad @4.5ghz will still beat a 9xx in the ~3.9ghz range (i forgot his exact overclock) Unless you are doing a local record IMO, dont use superfast - going from veryfast to superfast is around an ~80+% increase in bitrate requirements for the same quality, for only a ~10% faster encode (ballpark figures) so you are fucking yourself pretty hard by livestreaming with it. Veryfast is optimal IMO unless you have a ton of CPU room (you wont with 800p60) and want to increase compression efficiency by like 20-30% or something. Those kind of margins are achievable, but very expensive. Edit: Ive done further testing, same video (1280x720, 25fps) ran through x264, crf20, gives me a bitrate of 2932kbps for Veryfast and 6574 for Superfast (224.2% data requirements) and the difference in cpu power to encode is marginal at best. Presets between ~veryfast and slow or slower give decent tradeoffs, but placebo and super/ultrafast are edge-of-the-spectrum settings that are not really for general usage it seems | ||
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Kaladin
United States88 Posts
![[image loading]](http://www.speedtest.net/result/2210338748.png) AMD Phenom II x4 965 BE oc'd to 4.0ghz Nvidia GTX 560 TI | ||
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RiSkysc2
696 Posts
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WTFZerg
United States704 Posts
On September 30 2012 01:37 RiSkyToss wrote: OBS at this current point > FFsplit at this current point. Pretty similar, but the DirectX overlay system in OBS is very nice. | ||
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Avean
Norway449 Posts
Cause you cant escape the performance hit as encoding will strain your CPU no matter what software you are running. The encoding needs to be done somehow, either be dedicated hardware or a software solution using your CPU. Edit: Ive run some tests and this is not better than XSplit. Its a good free software but considering the amount of features you are lacking compared to XSplit its worth the small bucks for XSplit if youre a streamer. First the performance.....its not faster than XSplit. Encoding will ALWAYS be stressful to your CPU unless you get dedicated hardware. What FFSplit is using default is "Screen Region" which is LESS cpu intensive than using for example game source of xsplit or DXtory. BUT it looks 5x worse. The animation is choppy and you can also use Screen Region in XSplit if you want the performance gain trade of quality loss. And the overlay options are really really lacking compared to XSplit. I mean its a good free software but it has a long way before reaching XSplit quality. | ||
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Steelo_Rivers
United States1968 Posts
On September 30 2012 02:25 Avean wrote: How is performance in FFSplit ? Cause you cant escape the performance hit as encoding will strain your CPU no matter what software you are running. The encoding needs to be done somehow, either be dedicated hardware or a software solution using your CPU. Edit: Ive run some tests and this is not better than XSplit. Its a good free software but considering the amount of features you are lacking compared to XSplit its worth the small bucks for XSplit if youre a streamer. First the performance.....its not faster than XSplit. Encoding will ALWAYS be stressful to your CPU unless you get dedicated hardware. What FFSplit is using default is "Screen Region" which is LESS cpu intensive than using for example game source of xsplit or DXtory. BUT it looks 5x worse. The animation is choppy and you can also use Screen Region in XSplit if you want the performance gain trade of quality loss. And the overlay options are really really lacking compared to XSplit. I mean its a good free software but it has a long way before reaching XSplit quality. choppy? whats choppy about it? i stream at 45fps with ffsplit and it seems pretty smooth to me. | ||
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Kaladin
United States88 Posts
On September 30 2012 01:37 RiSkyToss wrote: OBS at this current point > FFsplit at this current point. what is OBS? | ||
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