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video:recordinghints

GoPro Hero4 Black

Best possible combinations of fps and resolution.
Video resolution: 3840 x 2160 pixels / 30fps (UltraHD) fixed @ 14mm (eq 35mm)

4K 16:9
30fps-NTSC wide 14mm / crop 60mbit
4K Super 16:9 - 4:3 maximum resolution
23fps-NTSC/PAL wide 14mm / hqresize 60mbit
2.7K 16:9
50fps-PAL wide 14mm / hqresize 60mbit
50fps-PAL medium 21mm / hqresize 60Mbit * best
2.7K 4:3
30fps-NTSC wide 14mm / hqresize 60mbit
1440p 4:3
60fps-NTSC wide 14mm / resize 48mbit
1080p 16:9
60fps-NTSC wide 14mm / hqresize 45mbit
60fps-NTSC medium 21mm / hqresize 45mbit
120fps narrow 28mm / crop 60mbit
H264 Parameters - High Profile 5.1
Color Space: YUV Chroma subsampling: 4:2:0 Bit Depth: 8bit Color Primaries: BT.709
Reference Frames: 1 Color Range: Full CABAC: Yes Bitrate 48-60Mbit/s

Encoding chip: Ambarella A9 http://www.ambarella.com
Sensor: 4072×3046 SONY 1/2.3“ 12Mpix BI-CMOS Exmor R IMX117

* HQResize: image is resized from sensor (high quality)
* Crop: image is cropped from sensor (no quality problems)
In other modes there are “skipped lines” - huge quality loss, that is why I don't list them.

Outdoor shooting

6500K / GoPro Colors* / -0.5EV
*In high contrast situation - Flat Colors
Set sharpness to low always because picture is oversharpened in default settings.

Mobile LENOVO Vibe Z2 Pro

Max Video quality: 3840 x 2160 pixels / 30fps up to 100Mbit/s with Optical Stabilization
CyanogenMod 14.1 (Android 7.1) + Cinema FV-5
f2.2 / 4mm (25mm) 5800K in settings mean ~6500K real on display or 100,88,90

H264 Parameters - Base Line 5.1
Color Space: YUV Chroma subsampling: 4:2:0 Bit Depth: 8bit
Reference Frames: 1 CABAC: No Bitrate 65-100Mbit/s

Supported functions: Auto Exposure Lock, Auto White Balance Lock, Focus Lock, ISO Lock
Mobile phone can write 4K 100Mbit/s with additional software. In default settings there are a lot of sharpness.
Set sharpness to zero.

100Mbit/s → 750MB/min
65Mbit/s → 488MB/min
40Mbit/s → 300MB/min

Encoding chip: Qualcomm Snapdragon 801 / Adreno 330
Sensor: 5328 x 3000 1/2.6” 16Mpix ISOCELL S5K2P8
Optics: Optical Stabilization

Sample 4K Video on Youtube.com

Canon EOS 600D

Video resolution: 1920 x 1080 pixels / 35fps
CMOS Deshaker: 57% / Crop 19%
No moaré/aliasing at 1080p + Crop 3x (bad named Digital Zoom in menu)
It's floating 2Mpix window on 18Mpix sensor with digital stabilization

H264 Parameters - Base Line 5.0
Color Space: YUV Chroma subsampling: 4:2:0 Bit Depth: 8bit Color primaries: BT709
Reference Frames: 1 CABAC: No Bitrate 45Mbit/s Color range: Full

Lens

Sigma 18-50mm
18mm f4* / f16 DoF-2.8cm
32mm f3.5* / f11 DoF-1cm
50mm f4.5 / f8* / f11 DoF-0.5cm

* best 32mm/f8
http://slrgear.com/reviews/showproduct.php/product/1249

Sigma 70-300mm
70mm f4 / f8* DoF-6.6cm
100mm f8* / f16 DoF-3.6cm
200mm f8* / f11 DoF-1cm / 0.34
300mm f8 / f11* DoF-0.4cm / 0.13

* best 100mm/f11
http://slrgear.com/reviews/showproduct.php/product/230

Samyang 35mm
35mm f5.6* / f11

http://slrgear.com/reviews/showproduct.php/product/1576

Canon HFS100

1920x1080x25p/30p NTSC
(progressive mode must be selected in postproduction because stream is marked as interlaced for broadcast compatibility)

Setting Description
FrameRate PF25 / 30 for NTSC
xvColor On
AGCLimit 6dB or 0dB
Quality MXP 24Mbit/s 1080p
Custom Effect Sharpness Low
Crop mode 1.7x*

Manual color calibration required (cool via auto-whitebalance)

*For best picture quality you must set 1.7x crop mode otherwise aliasing occured.
Crop is 2Mpix window on 8Mpix sensor - this enable optical and digital stabilization at once.

H264 Parameters - High Profile 4.0
Color Space: YUV Chroma subsampling: 4:2:0 Bit Depth: 8bit Color Space: BT.709
Reference Frames: 2 Scan type: Interlaced* CABAC: Yes Bitrate 24Mbit/s

* Fake in PF mode

video/recordinghints.txt · Last modified: 2016/11/17 12:29 by Jan Forman