All,

I couldn't find any specific threads related to this cameras 4K 30fps mode so thought this would be a good thread to start and keep discussion / tips related to it. I've posted the mediainfo properties of a clip in this mode below for reference.

I've just come back from a Skiing trip with the camera and shot a mix of 4K and 1080 120fps footage. I'm going to create both a 4K and 1080 videos and want to get the best from the 4K version. A few questions

1) Vegas seems to offer options for XAVC and XAVCS if you select match media format in the render settings using the source content MP4 file. Even searching I'm still not clear which you'd use for each scenario. The XAVCS version mentions "Long-GOP" in its description and from http://www.sony.co.uk/pro/article/broadcast-xavc-white-paper-1211 we see this quote "Today, the vast majority of broadcast and reality-TV industry is operating on the MPEG2 HD Long GOP format (50Mbps or 35Mbps) for HDTV production due to its small file size, high picture quality, and economy in computational requirements. From breaking news to reality shows, and prime sports events, the data rate of 35 to 50Mbps is the sweet spot to operate a file based HDTV infrastructure. ".

2) Slightly related to 1 YouTube also offers 4K support and given this what is the best template to use? Should we customize the default templates?

3) Does anyone have experience of stabilisiation plug ins for this 4K mode? There appear to be a vast array of plug ins. I did try Mercalli which with version 4 has support for a 4K output mode. I'm not sure if this is ideal for the camera though however it does reference "Go Pro 4" profile which is a good sign. The output looked reasonably good on some shaky ski footage.

4) Although the 4K mode only supports 30fps which is still very impressive are there any 3rd party products which might interpolate and generate 60fps footage? Even if it takes a long time to render it would be useful to generate smoother output.

Thanks

Matt

General
Format : MPEG-4
Format profile : Base Media / Version 1
Codec ID : mp41
File size : 466 MiB
Duration : 1mn 5s
Overall bit rate mode : Variable
Overall bit rate : 60.0 Mbps
Encoded date : UTC 2014-12-15 14:32:11
Tagged date : UTC 2014-12-15 14:32:11
AMBA :

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=15
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 5s
Bit rate mode : Variable
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
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.241
Stream size : 465 MiB (100%)
Title : GoPro AVC
Language : English
Encoded date : UTC 2014-12-15 14:32:11
Tagged date : UTC 2014-12-15 14:32:11
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1mn 5s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 1 016 KiB (0%)
Title : GoPro AAC
Language : English
Encoded date : UTC 2014-12-15 14:32:11
Tagged date : UTC 2014-12-15 14:32:11