vmaf
oss-fuzz
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vmaf | oss-fuzz | |
---|---|---|
41 | 31 | |
4,198 | 9,879 | |
2.7% | 4.1% | |
8.9 | 9.9 | |
17 days ago | 6 days ago | |
Python | Shell | |
GNU General Public License v3.0 or later | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
vmaf
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Extreme Video Compression
Netflix did VMAF for this: https://github.com/Netflix/vmaf
It checks a reference video against an encoded video and returns a score representing how close the encoded video appears to the original from a human perspective.
- Netflix/VMAF β Release v3.0.0
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Linux GUI/Frontend for VMAF
Not sure this is the right sub but I'm going to encode my entire BluRay collection in AV1 / NVEC. I'd like to optimize settings with VMAF but would like an ubuntu/debian based GUI to work with.
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Does anybody run libvmaf on your output as a validation check?
VMAF for anybody that doesn't know quantifies the quality difference between a source and modified video.
- How do you guys visually compare clips?
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reduce video filesize
Netflix even has a method to measure perceivable quality difference. A little while ago I used this tool to calculate this.
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How did my silly little After Effects filter reduce the file to 10% its size? The footage wasn't raw or 10-bit or anything, and I rendered it out at basically the same resolution (cropping aside). How did I do this????
Well you can use something like https://mediaarea.net/en/MediaInfo to look at the files and https://github.com/Netflix/vmaf to see if there is no loss.
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[HUB] Reddit Users Expose Steve: DLSS vs. FSR Performance, GeForce RTX 4070 Ti vs. Radeon RX 7900 XT
Vmaf exists
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4:2:0 10-bit HEVC vs 4:2:2 10-bit AVC codecs higher quality? (S5II, GH6)
You can try some tests https://github.com/Netflix/vmaf
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Unusually good compression ratio - Sanity Check
You can try VMAF as well (which ffmpeg supports). It's normally recommended to make a lossless copy first as a baseline too
oss-fuzz
- Xz: Disable ifunc to fix Issue 60259
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Backdoor in upstream xz/liblzma leading to SSH server compromise
> because the ifunc code was breaking with all sorts of build options and obviously caused many problems with various sanitizers
for example, https://github.com/google/oss-fuzz/pull/10667
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Ask HN: Any Good Fuzzer for gRPC?
Have you tried Googles grpc fuzzer?
https://github.com/google/oss-fuzz/blob/master/projects/grpc...
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Pacemaker should be running open source software
https://www.fda.gov/medical-devices/digital-health-center-ex...
oss-fuzz: https://github.com/google/oss-fuzz :
> We support the libFuzzer, AFL++, and Honggfuzz fuzzing engines in combination with Sanitizers, as well as ClusterFuzz, a distributed fuzzer execution environment and reporting tool.
> Currently, OSS-Fuzz supports C/C++, Rust, Go, Python, Java/JVM, and JavaScript code. Other languages supported by LLVM may work too. OSS-Fuzz supports fuzzing x86_64 and i386 builds.
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Fuzz Testing Is the Best Thing to Happen to Our Application Tests
I love fuzzing as a technique and use it quite regularly, but running AFL++ on even a single program occupies all threads of a high end AMD server for weeks. I'm running it locally so only paying for the electricity. If it was a cloud instance it would cost a small fortune. I think this is a reason it is not used more widely.
I will note that Google have a programme for doing fuzz testing on open source projects using computer from their cloud: https://google.github.io/oss-fuzz/
- Fixed Spelling Errors or Typos
- ELI5: How can downloading a pdf or word file give you a virus?
- OSS-Fuzz β continuous fuzzing for open source software
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Mosh: An Interactive Remote Shell for Mobile Clients (2012) [pdf]
Yes, mosh has fuzz tests in oss-fuzz [1].
[1] https://github.com/google/oss-fuzz/tree/master/projects/mosh
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Java Fuzzing with Jazzer compared to Symflower
We will explore how Jazzer is used to automatically generate malicious inputs for Java programs, and how it compares to Symflower, which can automatically generate unit tests to uncover bugs and errors in your code. With the help of Jazzer, many bugs - some of them even in the OpenJDK - were found already. Also, as of March 2021, Jazzer is officially part of OSS-Fuzz, Google's cloud fuzzing engine. It should be noted that Jazzer is a pure "bug detection" utility that finds reproducers for errors in user code. Symflower can do the same, but provides additional functionalities to boost developer productivity, like generating high coverage unit tests and providing test templates for the software developer or tester.
What are some alternatives?
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
AFLplusplus - The fuzzer afl++ is afl with community patches, qemu 5.1 upgrade, collision-free coverage, enhanced laf-intel & redqueen, AFLfast++ power schedules, MOpt mutators, unicorn_mode, and a lot more!
staxrip - π Video encoding GUI for Windows.
fuzzilli - A JavaScript Engine Fuzzer
FFmpeg-Builds
ffmpeg-libav-tutorial - FFmpeg libav tutorial - learn how media works from basic to transmuxing, transcoding and more. Translations: πΊπΈ π¨π³ π°π· πͺπΈ π»π³ π§π·
FFmpeg-Builds - FFmpeg Builds for yt-dlp
libfuzzer - Thin interface for libFuzzer, an in-process, coverage-guided, evolutionary fuzzing engine.
ffmpeg-debug-qp - FFmpeg Debug Script for QP Values
FFmpeg - Mirror of https://git.ffmpeg.org/ffmpeg.git
ssimulacra2 - SSIMULACRA 2. Perceptual metric.
uafuzz - UAFuzz: Binary-level Directed Fuzzing for Use-After-Free Vulnerabilities