Best Bitrate For 1080p H264 Aac
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Use this rate control mode if you are targeting a specific output file size, and if output quality from frame to frame is of less importance. This is best explained with an example. Your video is 10 minutes (600 seconds) long and an output of 200 MiB is desired. Since bitrate = file size / duration:
Among the many technical aspects surrounding live streaming, there are a few things every streamer should now be able to choose the best live streaming settings for Facebook, YouTube, Twitch and any other platform. The best settings for live streaming are not necessarily the highest quality settings. Apart from the video quality, when it comes to live streaming, bitrates, encoding and latency are just as important.
The best YouYube bitrate settings for your stream can vary greatly because it relies on many factors. If you are unsure of the best bitrate for your stream, you can leverage a live encoder software such as ManyCam, which can define it automatically for you to achieve the best possible quality.
Your video export settings in Premiere Pro for YouTube should match YouTube recommended upload encoding settings. Videos in 4K UHD, 1080p, or 720p should be uploaded in the same frame rate it was produced. For SDR uploads, recommended video bitrate, standard frame rate (24fps, 25fps, 30fps): 4K (35-45Mbps), 1080p (8Mpbs), 720p(5Mpbs), recommended video bit rate, high frame rate (48fps, 50fps, 60fps): 4K (53-68Mbps), 1080p (12Mpbs), 720p(7.5Mpbs). 480p and 360p are not listed here for low quality.
For HDR uploads, recommended video bitrate, standard frame rate (24fps, 25fps, 30fps): 4K (44-56Mbps), 1080p (10Mpbs), 720p(6.5Mpbs), recommended video bit rate, high frame rate (48fps, 50fps, 60fps): 4K (66-85Mbps), 1080p (15Mpbs), 720p(9.5Mpbs). 480p and 360p videos are not supported.
4K UHD, 1080P, 720P video export settings for YouTube are similar, only with a few exceptions, such as dimensions and video bit rate. MP4 H.264 is the best video format for YouTube uploading. AAC audio format is recommended. A higher audio bitrate on audio bitrate settings means better sound quality.
Internet link speeds continue to rise rapidly, so while our chosen bitrates are higher than some other video web sites, for quality's sake, they're still quite reasonable. Based on Akamai data from 2010, the average real-world downloading speed (after protocol overhead) is already 8+ Mbps in Japan, South Korea and Hong Kong, 4.6 Mbps in the USA and Canada, somewhere around 4 Mbps in Western Europe, 2.9 Mbps in Australia and 2.6 Mbps in Russia. Even 3G cellphone networking is around 2 Mbps on average, although it's highly variable. The average American can therefore already view the 720p high-definition versions of our videos without waiting, and the average Australian or Russian the 480p versions. The average insuch statistics is skewed by the high speeds, of course, since it's an exponential curve, but even so, about one third of Internet connections in modern countries are over 5 Mbps real-world downloading speed, which is enough for the 720p HQ versions, and 70% are over 2 Mbps and therefore can definitely view the 480p versions without waiting. Even in Australia, where broadband speed is more uneven and the average lags behind most modern countries, government statistics from 2011 indicate 89% of users can view the 360p versions without any waiting (1.5+ Mbps link speed), and 45% can instantly view the full 1080p versions (8+ Mbps link speed).
UPDATE: Providers sometimes change the bitrates they offer based on experience and feedback from thier users. For example, a couple of years after this article was written, Netflix split their 1080p 4800kbps offering into two normal/HQ variants, at 4300kbps and 5800kbps, and reduced their 720p HQ offering at the same time, down from 3600kbps to 3000kbps. Then a couple of years after that, Netflix started to do content-specific encoding for popular content, to save bandwidth in cases like 2D animation and simple "talking head" content. The bitrates recommended above, however, remain an excellent choice.
432p-1080p: double the target bitrate with a 1.5-second buffer (1.5x peak bitrate), which is generous on the assumption our 20% bitrate headroom will cover most spikes and general fluctuations, so only really problematic, sustained overruns need to be clipped by the encoder (at a loss of quality).
1080p Superbit: 25 Mbps to keep within H.264 level 4.0 (works out to 1.25x the already very high target bitrate), with a 30-Mbit buffer which is the minimum size allowed for Blu-ray players and therefore should be safe for most 1080p hardware decoders (works out to 1.2 seconds).
PAUSING RISK: The settings for 432p-1080p are fairly generous and probably cause almost no spike clipping for most content at the encoder level, leaving only our 20% bitrate headroom. If anything, we're leaning slightly towards better overall quality at the risk of possible pausing for buffering on the very slowest links within each link-speed range. If the user was to jump into the middle of the video and land in a high-motion scene which temporarily uses double the target bitrate, the player would start playback then suddenly pause and have to wait while it buffered. A setting of something like 1.5x the target bitrate and a 1-second buffer would be a safer, more conservative setting, although even that wouldn't completely prevent the "jump into high-motion scene" risk, which is almost unavoidable, really.
Ultimately, high-quality video encoding at lowish bitrates is all about finding similar image areas in previous frames, and reusing them. The search pattern is the pattern used during motion estimation to search for the most similar area to each macroblock in each possible reference frame, in order to select the best motion vector for each macroblock. This is where a great deal of encoding time is spent. More thorough search patterns will find better matches, producing better motion vectors, leading to a less complex residual image left to encode after motion compensation, and therefore better quality at the given target bitrate. Of course, a more thorough search also takes a lot longer during encoding.
x264's default is 3 reference frames, which is also what YouTube uses. iTunes uses 4 for 1080p, but only 2 for 720p, presumably for compatibility with older, slower computers (Apple also avoids CABAC at 720p, presumably for the same reason, and uses a high bitrate to compensate). Taking this to an extreme, iTunes uses just 1 reference frame for 480p, which is ridiculous since playing 480p H.264 baseline video should be relatively easy for any modern computer. Perhaps Apple are just being ultra-conservative in case something becomes a problem in the future, and they want their fallback SD videos to be as undemanding as possible in terms of required performance, but not using even 2 reference frames is taking things way too far!
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Do you know what is video bitrate? This post addresses the term bitrate, explaining how bitrate affects the video quality, shows what is the best video bitrate and how to easily change video bitrate with free MiniTool software.
Every day, thousands of videos are streamed on Twitch. You can set the best video bitrate (450-6000kbps) for your video streamers to get a good viewer experience. Twitch limits all uploads to 6000kbps, but you had better go lower in many cases.
This post shows what is video bitrate, how bitrate affects video quality, what is the best video bitrate, and how to change video bitrate for free. If you have any questions about bitrate, please feel free to contact us.
Fortunately, most advanced video editing programs have the presets according to your preferred device. If you are unsure, go with the presets. But you can still play around and find the best bitrate possible for your needs.
Since less data is being used in the transfer, more data is saved. This is especially important for users with data-capped devices like cellular 4G and on-demand subscription plans. Say your workflow uses a 4G LTE USB modem as a primary Internet source. With AVC, streaming at 1080p resolution will cost an impractical amount of bandwidth to create a lossless feed. With HEVC, those bitrate demands are reduced in nearly half, bringing 1080p resolution back to the table. Alternatively, you could stream at a lower quality and save the extra bandwidth cost.
I have been using this export preset for a long time and I am used with its quality, I used to think its the best I could get. The thing lately I have found that is the final QuickTime movie has a bitrate of 20-21Mbit/s and never the maximum 24Mbit/s. I also tried to export a clip shot at 17Mbit/s same settings and the final QT movie also has a bitrate of 20-21Mbit/s. It seems FCP X locks the export bitrate at 20-21 when using this export preset?
The best export of H.264 you can get is to Export File or a Master File. FCPX will encode with the absolute highest quality you can expect (bitrate in the range of ~ 45 Mbps to about 55Mbps, give or take.) The setting you've been using is to export a "playable" version for Apple Devices. 20-21Mbps is still a very decent quality (YouTube max quality is 8Mbps for 1080). I seriously doubt you can tell the difference in quality between the original camera AVCHD and the output for Apple Devices. H.264 is a *highly* compressed storage format. ProRes is not. ProRes is a format best utilized in editing and not playing. No matter what you set the compression settings for with H.264, what you get will often surprise you (the compression scheme heavily relies on what pixels change from frame to frame -- not that much in the way of changes and the compression will be significant.) 2b1af7f3a8