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encodersettings [2012/01/26 02:25]
lcmsupport created
encodersettings [2017/03/23 14:52]
lcmsupport [Live Streaming]
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 +===== Introduction =====
 +
 +The settings listed below are general guidelines based on our experience working with church services. ​ Optimal encoding settings depend on your source video quality, the amount of motion in your recording and the capabilities of your viewing audience.
 +
 +===== On demand and simulated live multirate streaming for desktop and mobile =====
 +
 +Multirate streaming provides the best results for simulated live and on demand videos. ​ You provide a master or near master quality file which we then re-encode into multiple formats. ​ This is triggered automatically when you upload any file with a bit rate of 2500k or higher. ​ Although we accept almost any format for this, we recommend the following:
 +
 +| File Format | MP4 / MOV |
 +| Video Codec| h.264 Main or High Profile |
 +| Video Resolution and Rate | 1280x720 @ 5000k or 1920x1080 @ 8000k |
 +| Audio Codec | AAC |
 +| Audio Channels and Rate | 128k mono or 256k stereo |
 +| Est File Size | 3GB/hr |
 +
 ===== On demand and simulated live streaming for desktop ===== ===== On demand and simulated live streaming for desktop =====
  
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 Audio bit rate: 48-64k Audio bit rate: 48-64k
  
-4x3 Video:+=== 4x3 Video: ​===
 ^ Resolution ^ Bit Rate ^ File Size* ^ ^ Resolution ^ Bit Rate ^ File Size* ^
-| 320x240 | 300 | 100MB |+| 320x240 | 300 | 180MB | 
 +| 480x360 | 450 | 250MB | 
 +| 640x480 | 600 | 325MB | 
 + 
 +=== 16x9 (Widescreen) Video: === 
 +^ Resolution ^ Bit Rate ^ File Size* ^ 
 +| 320x180 | 250 | 150MB | 
 +| 480x270 | 450 | 250MB | 
 +| 640x360 | 600 | 325MB | 
 +| 960x540 | 800 | 425MB | 
 +| 1280x720 | 1200 | 625MB | 
 + 
 +* Estimated file size for a 1 hour video
  
 ===== On demand and simulated live streaming for mobile devices ===== ===== On demand and simulated live streaming for mobile devices =====
  
 +In most cases, we will re-encode your source video for mobile streaming (requires a Plus or higher account).
 +
 +===== Live Streaming =====
 +
 +In most circumstances,​ we recommend matching the size you plan on embedding the live stream on your page, with a recommended maximum of 640x480 for desktop and 320x240 for mobile. ​ If you are using the live stream for multi-site or know your audiences systems can support it you can normally run a live stream up to 2000kbits/​second before special provisions need to be made to deal with very high bit rate streams.
 +
 +[[http://​churchonlineplatform.com/​|Church Online]] uses a embed size of 480x270 for 16:9 and 480x360 for 4:3.  We recommend running two streams. ​ One at the embed size, and one at 4x the embed size.  Keeping an even multiple of the width and height prevents scaling artifacts.
  
 +=== 16x9 (Widescreen) Video: Recommended Live Bit Rates ===
 +^ Resolution ^ Min ^ Max ^ Ideal ^
 +| 480x270 | 360 | 805 | 540 |
 +| 640x360 | 480 | 1073 | 740 |
 +| 960x540 | 720 | 1610 | 1080 |
 +| 1280x720 | 960 | 2147 | 1440 |
 +| 1920x1080 | 1440 | 3220 | 2160 |