digital_video_introduction
NotEnoughAV1Encodes
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digital_video_introduction | NotEnoughAV1Encodes | |
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8 | 18 | |
15,095 | 511 | |
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Jupyter Notebook | C# | |
BSD 3-clause "New" or "Revised" License | MIT License |
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digital_video_introduction
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Breakdown of AV1 Video Codec
There's a great introduction to video tech, including codecs, at https://github.com/leandromoreira/digital_video_introduction
- A Hands-On Introduction to Video Codec Technology and FFmpeg
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Topics to cover in a 101 AV class
A couple of AV centric scenarios I'd explore: - Set up two speakers fed with a mono signal, flip the phase on one and have students move around the area. From this introduce constructive and destructive interference and some basic acoustics. - Using an oscilloscope (or just prepped graphics) show a sine wave on an unbalanced line, how this is paired with an inverted copy of itself on a balanced line, and how this works to cancel transmission noise. - With an analogue signal now pictured, introduce analogue to digital conversion and what sample rate and bit depth mean. From this you can also start to introduce why gain staging is important in both pure analogue systems and those where you're bouncing between analogue and digital domains. - Introduce video: colour channels, different ways of representing colour and some (very surface level) compression basics like chroma subsampling. Really good resource for that here. - Introduce base patterns for getting any signals arounds: dedicated circuits (analogue audio, HDMI video, RS-232 control, logic IO) and network based (again for audio, video, and control). Dive intro signal flow, how to read a schematic and where reasoning about each of these modes differs.
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Crestron DMC-D-4K Class Tips/Things to Watch out For
If you want to keep digging from there, get familiar with the compression on NVX, JPEG-XS, and how it behaves. intoPIX are the upstream vendor that do some of the NVX internals and have some great resources on that here: https://www.intopix.com/jpeg-xs. For a guide on all things digital video I also highly recommend https://github.com/leandromoreira/digital_video_introduction.
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[OC] Finally managed to sync the moshing effect to the beat of the music, here's what it looks like on a small test section of a music video
Edit: After finishing writing the comment, I realized that it was more technical than I intended, and assumes that the reader has a basic to medium understanding of video compression. If not, I recommend this writeup/tutorial of digital video, especially the section about frame types.
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Ask HN: How can I learn about video encoding, h.264, ffmpeg, etc.
A good high-level breakdown of H.264: https://sidbala.com/h-264-is-magic/
Associated HN post (although there have been a few): https://news.ycombinator.com/item?id=30710574
More technical: https://github.com/leandromoreira/digital_video_introduction...
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H.264 is magic: a technical walkthrough
For those interested in this topic, I highly recommend the approachable but more extensive technical introduction at https://github.com/leandromoreira/digital_video_introduction
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Help and guidance for a Coding interview for the role of Media Video Engineer (Video Quality)
Go look at this. https://github.com/leandromoreira/digital_video_introduction
NotEnoughAV1Encodes
- Linux GUI/Frontend for VMAF
- [A guide to SVT-AV1] How to reduce video size by up to 30x
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Best GUI software for AV1 encoding?
I think notenoughav1encoders is another one but I had only just remembered that one. Might be worth a check out though
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frames with aomenc?
Tools like NEav1e (https://github.com/Alkl58/NotEnoughAV1Encodes/releases) will do a better job with AOMEnc encoding, maintaining a better quality and efficient CPU use. However, it may require a lot of disk space for encoding (depending on your chosen encoding configuration).
- How to install Av1an on Windows 10 x64 ?
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Getting started with av1
Handbrake has AV1 options in the nightly releases. There are lots of encoders that wrap FFmpeg into a GUI such as Fastflix, nmkoder, qencoder, or Not Enough AV1 Encoders.
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aomenc outputs a completely unexpected result
The answer is in this log which was made by this program for anyone interrested https://github.com/Alkl58/NotEnoughAV1Encodes :
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Dav1d, fast AV1 decoder, version 1.0.0 released
https://www.spiedigitallibrary.org/conference-proceedings-of...
It's good and getting gooder.
Just give it a try using https://github.com/Alkl58/NotEnoughAV1Encodes or whatever, svt-6 is fairly quick.
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AV1 encoding using StaxRip
maybe you can try this https://github.com/Alkl58/NotEnoughAV1Encodes. Discovered when i read about AV1. So dont know it good or not.
- NotEnoughAV1Encodes - Release v2.0.4
What are some alternatives?
PHP-FFmpeg-video-streaming - 📼 Package media content for online streaming(DASH and HLS) using FFmpeg
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
staxrip - 🎞 Video encoding GUI for Windows.
VVCEasy - VVCEasy is that you don't have to compile or/and coding to encode VVC (known as Versatile Video Codec). Simple. Easy. Encode. Decode
FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!
SVT-AV1 - Welcome to the GitHub repo for the SVT-AV1! This repo is set to read-only for archiving purposes. Please join us at https://gitlab.com/AOMediaCodec/SVT-AV1. We look forward to seeing you there
dav1d - A read-only mirror of dav1d source code repository. The origin is at https://code.videolan.org/videolan/dav1d/
SwiftFFmpeg - A Swift wrapper for the FFmpeg API
FFMpegCore - A .NET FFMpeg/FFProbe wrapper for easily integrating media analysis and conversion into your C# applications
Ant-Media-Server - Ant Media Server is a live streaming engine software that provides adaptive, ultra low latency streaming by using WebRTC technology with ~0.5 seconds latency. Ant Media Server is auto-scalable and it can run on-premise or on-cloud.
qencoder - Video encoder for free formats (av1, vp9, vp8). Easy and cross platform.