postproduction:start
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postproduction:start [2014/07/29 21:31] 81.221.85.213 [Conversion Scripts] |
postproduction:start [2014/10/06 16:33] (current) 84.191.156.53 [Conversion Workflows] |
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| Recording RAW images in general means that the image of the sensor is read out without any camera-internal manipulation. Each of the Images is stored as a single (lossless compressed) DNG Image file which contains the image data plus the Camera Settings you used during shooting - but only as meta data. So if you set a White Balance while shooting in Raw-Mode, this is not directly applied in-camera but will be in the process of "developing" the digital negative. The advantage of raw files is a 12-Bit Color depth compared to 10-Bit in Prores, the disadvantage is a huge volumes of data being recorded. This means that you need a very fast SD-Card and the according setup to transfer, store and backup this data. | Recording RAW images in general means that the image of the sensor is read out without any camera-internal manipulation. Each of the Images is stored as a single (lossless compressed) DNG Image file which contains the image data plus the Camera Settings you used during shooting - but only as meta data. So if you set a White Balance while shooting in Raw-Mode, this is not directly applied in-camera but will be in the process of "developing" the digital negative. The advantage of raw files is a 12-Bit Color depth compared to 10-Bit in Prores, the disadvantage is a huge volumes of data being recorded. This means that you need a very fast SD-Card and the according setup to transfer, store and backup this data. | ||
| - | =====Conversion Scripts===== | + | ===== Conversion Workflows ===== |
| - | Does not work with RAW Source Material. | + | We also have a section on open source tools for video and audio conversion and manipulation, with some scripts that might be useful for your workflow: [[postproduction:FFMpegConversionWorkflows|FFMpeg Conversion Workflows]] |
| - | + | ||
| - | *Work in Progress* | + | |
| - | + | ||
| - | Inspired by: http://www.personal-view.com/talks/discussion/10637/4k-downscaling-progress-topic | + | |
| - | + | ||
| - | **ffmpeg denoise script for BMPCC, tested for already graded ISO800 Footage** | + | |
| - | + | ||
| - | <code bash> ffmpeg -i "$1" \ | + | |
| - | -filter:v hqdn3d=2.0:2.0:7.0:8.0 | + | |
| - | -c:v prores_ks -profile:v 2 \ | + | |
| - | -c:a copy \ | + | |
| - | -c:s null \ | + | |
| - | -c:d copy \ | + | |
| - | -c:t copy \ | + | |
| - | "$1_dn_ProRes.mov" | + | |
| - | </code> | + | |
| - | + | ||
| - | **ffmpeg scale and denoise for GH4 UHD tested with ISO 800** | + | |
| - | <code bash> ffmpeg -i "$1" \ | + | |
| - | -filter:v hqdn3d=3.0:3.0:5.0:5.0 \ | + | |
| - | -vf scale=1920:1080 \ | + | |
| - | -q 0 -quant_mat hq \ | + | |
| - | -c:v prores_ks -profile:v 1 \ | + | |
| - | -c:a copy \ | + | |
| - | -c:s copy \ | + | |
| - | -c:d copy \ | + | |
| - | -c:t copy \ | + | |
| - | "$1_hqdn3d_ProRes.mov" | + | |
| - | </code> | + | |
| - | + | ||
| - | **ffmpeg scale UHD to HD 444 and denoise for GH4 UHD and defish 7,5mm Samyang tested with ISO 800** | + | |
| - | + | ||
| - | <code bash> ffmpeg -i "$1" \ | + | |
| - | -filter_complex 'extractplanes=y+u+v[y][u][v]; [u] scale=w=3840:h=2160:flags=print_info+neighbor+bitexact [us]; [v] scale=w=3840:h=2160:flags=print_info+neighbor+bitexact [vs]; [y][us][vs]mergeplanes=0x001020:yuv444p,format=pix_fmts=yuv444p10le,hqdn3d=3:3:5:5,frei0r=lenscorrection:0.5:0.5:0.16:0.6,scale=w=1920:h=1080:flags=print_info+bicubic+full_chroma_inp+full_chroma_int' \ | + | |
| - | -sws_dither none \ | + | |
| - | -q 0 -quant_mat hq \ | + | |
| - | -c:v prores_ks \ | + | |
| - | -profile:v 4 \ | + | |
| - | -c:a copy \ | + | |
| - | -c:s copy \ | + | |
| - | -c:d copy \ | + | |
| - | -map 0 \ | + | |
| - | "$2/$1" | + | |
| - | </code> | + | |
postproduction/start.1406662279.txt.gz · Last modified: 2014/07/29 21:31 by 81.221.85.213
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