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Description

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NVHSP (aka NVENC HEVC Stream Patcher) adds missing HDR metadata (VUI and SEI) to HEVC streams. Those missing metadata is needed to trigger proper color or HDR modes on TVs or players such as color primaries, transfer characteristics, color matrix, MaxCLL and MaxFall, Mastering Display Parameters. It does not reconvert the video. Command line software (see All features how to use it).

Free software
OS: Windows
File size: 5.0MB
Old versions
5/10
1 vote
Rate it




Screenshots

NVHSP screenshot
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Latest version

1.0 (January 23, 2017)



Download


Visit developer's site

Download NVHSP 1.0  5.0MB  Win




Download old versions


Download NVHSP old versions



Software License

Free software / FOSS (Free download and also Free and Open Source Software)



Supported operating systems

WinWindows



More information and other downloads

NVHSP.exe requires VC 2015 redist.



Version history / Release notes / Changelog


N/A




All features


NVENC HEVC Stream Patcher. Add missing HDR metadata (VUI and SEI)

Tiny python script and binary (Win) adding/altering basic HDR metadata (SEI and SPS VUI) to raw HEVC streams from NVENC encoder (if you have PASCAL gen GPU).

This app not re-encode video! So works very fast.

This could be handy if you want to add following flags (metadata) to HEVC streams from NVENC encoders (nVidia SDK currently does not support emit of this data to HEVC streams):

color primaries (for example, bt2020)
transfer characteristics (for example, SMPTE ST 2084)
color matrix (for example, bt2020nc)
chroma bit location
video format (PAL, NTSC, COMPONENT, e.t.c)
signal range flag (Full (0-255) or TV(16-235))
MaxCLL (in nits)
MaxFall (in nits)
Mastering display data (in format G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1))
Written on python 3.5-3.6


Prerequisities (for now):

VC 2015 redist to run binary


How to use:

First you need raw HEVC (H265) stream file created with NVENC encoder (Rigaya's NVencC or ffmpeg's hevc_nvenc). if you have already muxed you video to mp4,mkv, unmux and extract raw h.265 stream (for example with "FFMPEG -i infile.mp4 -c:v copy -an outfile.h265"). That will prepare source file.
launch cmd in folder and type nvhsp.exe infile [-params] outfile
you may also type nvhsp.exe -h to get help on params and values
param names and values are same as in x265
Hit "Enter"
That's all! nvhsp creates new raw HEVC stream with applied metadata flags and values.
Mux the outfile .h265 stream to MP4 or MKV with FFMPEG or whatever


Script usage:

you may also use the py script (for geeks)
prerequisities for this
python 3.5-3.6 installed (checked only on these)
bitstring module installed (pip install bitstring)
NOTE: This may not work well with HEVC streams made by x265 (x265 lib) with REPEATING NAL and SEI units! Output stream most probably could be corrupted!




Sections/Browse similar tools






Guides and How to's




Acronyms / Also Known As

NVENC HEVC Stream Patcher




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