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GoPro GoProStudio 2.5 Windows Manual

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GoPro Studio 2.5 User Manual
Following are the major component pieces in a CineForm compression subsystem:
CineForm Wavelet Codec: The design goals for CineForm’s codec were:
1. Maintaining extremely high visual fidelity through a rigorous multi-generation post-production workflow, including high bit precision,
yielding high signal-to-noise ratio.
2. Offering extremely fast performance on Intel architecture CPUs such that multiple streams can be processed in real time without the need
for specialized hardware.
The design characteristics of the GoPro CineForm codec are the following:
Transform: Full-frame Wavelet. “Full-frame” means the entire image is transformed without breaking the image into “blocks” which are the basis
for DCT-style transforms (JPEG, MPEG, AVCHD, etc.), and which provide the ubiquitous artifacts often visible in complex image sequences.
CineForm’s full-frame Wavelet transform cannot suffer from these DCT image degradations.
Chroma Formats and I/O Bit Depth: 10-bit YUV, 12-bit RGB(A), and 12-bit CineForm RAW
Spatial Resolution: Unrestricted
Bit Rate: Variable (constant quality)
Encoder Quality Settings: 6 (user selectable)
Symmetry: Symmetric (similar speed for encoding and decoding)
Multi-Resolution Decoding: Wavelet algorithms offer a valuable feature for use in playback or other post-production applications: the ability to
decode a full-resolution image to a lower resolution. Specifically the ability to decode to ½ or ¼ resolution in each dimension is allowed, while
using less CPU load compared to a full-resolution decode. CineForm software dynamically takes advantage of this characteristic during editorial.
Performance: Function of CPU speed and memory bandwidth, but below are representative examples run on a 3.2GHz Intel Corei7 (single chip
quad core):
10 bit 1920×1080 4:2:2
232 fps
12 bit 1920×1080 4:4:4 (CineForm 444)
104 fps
12 bit 4096×2048 4:4:4 (playback at 2K)
52 fps
12-bit 4096×2048 4:4:4 (playback at 4K)
20 fps
Relative Performance (versus JPEG2000): CineForm compression ranges from around 5X to 10X faster than JPEG2000. Compression
performed by CineForm in an hour may take up to 10 hours for JPEG2000 to perform on the same imagery.
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