hdr10plus_tool
FFmpeg
hdr10plus_tool | FFmpeg | |
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4 | 486 | |
278 | 42,517 | |
- | 1.8% | |
4.9 | 10.0 | |
about 1 month ago | 4 days ago | |
Rust | C | |
MIT License | GNU General Public License v3.0 or later |
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hdr10plus_tool
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Is it possible to convert Dolby Vision to HDR10+?
From what I gathered, it is possible to convert HDR10+ content to Dolby Vision using dovi_tool and hdr10plus_tool. But I haven't seen any tutorial on doing the opposite: taking the dynamic metadata from Dolby Vision and converting it to HDR10+. I have found posts with this question but with no solution. The replies to this one (from 2020) suggest that it is theoretically possible but that you would need more info about the DV metadata. Now, using dovi_tool, it is possible to extract the Dolby Vision metadata into a JSON file. But, while dovi_tool is able to generate a DV RPU using a JSON file containing HDR10+ metadata, hdr10plus_tool has no similar option. Is there any way to convert the DV metadata to something usable by hdr10plus_tool to inject in HEVC?
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Downscaling 4k hdr 10bit to 1080p but maintaining hdr 10bit?
NOW, for dynamic HDR (HDR10+ or Dolby Vision), it's more involved but there is indeed a way to create encoded files with dynamic HDR metadata now by using dovi_tool for Dolby Vision, or hdr10plus_tool for HDR10+ files (or you can use BOTH on it if you have a file that is compliant with both standards). This one requires de-muxing the dynamic metadata from the isolated HEVC videostream of your source file, encoding your file an isolated HEVC stream, injecting the dynamic metadata back in to the encoded HEVC stream, then finally merging that with your MKV containing everything else. This is more complicated but here's the script for THAT...
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Create Dolby Vision from HDR10+
downloaded quietvoid's HDR10Plus_Tool 1.0.0 (from https://github.com/quietvoid/hdr10plus_tool/releasesl)
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Editing .mkv HDR Footage
You could also try converting the mkv to mp4 using ffmpeg and manually copy the HDR metadata over, which Premiere Pro then understands. It's just a bunch of tags telling the software what the pixel numbers mean. This can be done with reencoding, or maybe without if the mkv contains a video stream already in the right format and just needs to be moved into a mp4 (might not even require manually specifying metadata, maybe the converter you used just didn't support it). I'm not sure about formats like HDR10+ that have multiple metadata updates in a single video, you could use this to extract the metadata but I don't know how to pass that into ffmpeg again.
FFmpeg
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Creando Subtítulos Automáticos para Vídeos con Python, Faster-Whisper, FFmpeg, Streamlit, Pillow
FFmpeg (https://ffmpeg.org/)
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Show HN: CompressX, my FFmpeg wrapper for macOS, made $9k in the last 4 months
GPL2
Since FFmpeg is GPL2, doesn’t that require CompressX to disclose its source code?
IANAL, apologies if I miss understand license requirements.
https://github.com/FFmpeg/FFmpeg?tab=License-1-ov-file
- Microsoft offered FFmpeg one-time payment instead of support contract
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Writing x86 SIMD using x86inc.asm (2017)
This turns out to be a lot of assembly macros to help write one x86 assembly. https://github.com/FFmpeg/FFmpeg/blob/master/libavutil/x86/x...
The sibling comment recommending compiler intrinsics is probably the best way to go for writing SIMD code. A mixture of `` style types and intrinsics to specify instructions is a solid 90% solution compared to assembly.
If you want that last 10%, I think macros are putting the emphasis in the wrong place. They're a somewhat easy way to build up a language abstraction which will work if held carefully, but I'm confident the dev experience using this abstraction when you write invalid code will be deeply confusing.
I would suggest to write a parser instead of the macros. That'll tell you clearly when the syntax is invalid (though possibly not with much precision) and it'll give you a place to put semantic analysis for where valid syntax encodes nonsense. Do the equivalent of the macro expansions on the parsed tree instead of on the text. Emit asm as the "back end".
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Video Generation with Python
You might have heard of FFMPEG or ImageMagick for image and video edition in a programmatic way. MoviePy is a Python module for video editing (Python wrapper for FFMPEG and ImageMagick). It provides functions for cutting, concatenations, title insertions, video compositing, video processing, and the creation of custom effects. It can read and write common video and audio formats and be run on any platform with Python 2.7 or 3+.
- I want some logically difficult c programs
- Looking for a good file converter for upload testing
- Best Way to Rip Rare DVDs?
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11 Ways to Optimize Your Website
There are many cloud-based tools and websites that can convert your images, but the problem with these tools is that you usually have to upload the files for them to be processed, and some of their services are not free. In this article, I'd like to introduce a piece of software called FFmpeg, which allows you convert the images locally with one simple command.
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AI-assisted removal of filler words from video recordings
To run the demo locally, be sure to have Python 3.11 and FFmpeg installed.
What are some alternatives?
dovi_tool - dovi_tool is a CLI tool combining multiple utilities for working with Dolby Vision.
mpv - 🎥 Command line video player
dlb_mp4base - The Dolby MP4 streaming muxer (dlb_mp4base) is a software implementation of a muxer of fragmented or unfragmented ISO base media file format (mp4). It supports muxing of Dolby Digital (AC-3), Dolby Digital Plus (E-AC-3), and Dolby AC-4 audio formats as well as Dolby Vision.
ffmpeg-python - Python bindings for FFmpeg - with complex filtering support
image-hdr - An implementation of HDR Radiance Estimation using Poisson Photon Noise Estimator for creating HDR image from a set of images
OpenH264 - Open Source H.264 Codec
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
Exoplayer - An extensible media player for Android
oculante - A fast and simple image viewer / editor for many opering systems
hlsdl - C program to download VoD HLS (.m3u8) files
GStreamer - GStreamer open-source multimedia framework
jcodec - JCodec main repo