Yi 4k bitrates.

[basior]

What are actual bitrates at various resolutions?
I remember in original Yi 1080p had just 12mbps whic hwas way to low.
So how's the situation look now with Yi 2?

 

[wyldemdd]

Video shoot at 4K – (3840 x 2160) – 30 / 25 fps will have 60mbps of bitrate and lower resolution will have lower bitrate. And higher fps will result in lower bitrate too.

 

[basior]

Yes, I have google too. Is there any user here who knows some actual values, not just "higher" and "lower"?

 

[hirsti99]

I have the camera, here are the details taken from the recorded media:

4K @ 60 Mbps
2.5K @ 45 Mbps
1080p@60fps @ 45 Mbps

Here is an excerpt from an official document:

Resolution Bit Rate(Mbit/s) Size per 1 minute(MB)
4K P30 60 450
4K Ultra P30 60 450
2.5K P30 45 337.5
1440p P60 45 337.5
1440p P30 30 225
1080p P120 60 450
1080p Ultra P120 60 450
1080p P60 45 337.5
1080p Ultra P60 45 337.5
1080p P30 30 225
1080p Ultra P30 30 225
960p P120 60 450
960p P60 45 337.5
720p P240 60 450
720p Ultra P120 60 450
720p Ultra P60 45 337.5
480p P240 60 450

Here is a media info export for a 4K file:

General
Complete name : G:\yi2\Quadtest\YDXJ0124.MP4
Format : MPEG-4
Format profile : JVT
Codec ID : avc1
File size : 1.82 GiB
Duration : 4mn 15s
Overall bit rate mode : Variable
Overall bit rate : 61.2 Mbps
Encoded date : UTC 1970-01-01 00:33:36
Tagged date : UTC 1970-01-01 00:33:36

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=8
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 4mn 15s
Bit rate mode : Variable
Bit rate : 61.0 Mbps
Maximum bit rate : 60.0 Mbps
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.245
Stream size : 1.81 GiB (100%)
Title : XiaoYi AVC
Language : English
Encoded date : UTC 1970-01-01 00:33:36
Tagged date : UTC 1970-01-01 00:33:36
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Color range : Full

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 15s
Bit rate mode : Constant
Bit rate : 128 Kbps
Nominal bit rate : 48.0 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 3.90 MiB (0%)
Title : XiaoYi AAC
Language : English
Encoded date : UTC 1970-01-01 00:33:36
Tagged date : UTC 1970-01-01 00:33:36

 

[vatoos]

I can record with my Oneplus 3 in 4K 200Mbit. Is it possible to hack the Yi 2 to get this results too?

 

[mercier]

What are actual bitrates at various resolutions?
I remember in original Yi 1080p had just 12mbps whic hwas way to low.
So how's the situation look now with Yi 2?

Here you can find the latest: https://www.dropbox.com/s/hvwio6umk0klr6j/yi4k_VideoRes_BitRate-20170605.xlsx?dl=0