[FFmpeg-trac] #11563(undetermined:new): Implement better jpeg compression now that patents on those two algorithms expired
FFmpeg
trac at avcodec.org
Wed Apr 30 00:44:50 EEST 2025
#11563: Implement better jpeg compression now that patents on those two algorithms
expired
-------------------------------------+-------------------------------------
Reporter: Balling | Type:
| enhancement
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: mjpeg | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: bigger bug is here "Image specific quantization
tables" which can source code that should compile just fine,
https://pages.cs.wisc.edu/~ratnakar/rdopt.html and
there is even a better algorithm that doubles average size savings: Joint
Optimization of Run-Length Coding, Huffman Coding, and Quantization Table
With Complete Baseline JPEG Decoder Compatibility.
Unfortunately, it is patent encumbered probably until 2024 (2025 now,
btw): https://www.google.com/patents/US7570827
There are also images comparison
https://cloud.githubusercontent.com/assets/72159/8814942/99255002-300a-
11e5-8fcd-4f810b0aa78b.jpg
vs
https://cloud.githubusercontent.com/assets/72159/8814943/992ee824-300a-
11e5-99fe-0f56e3229c84.jpg
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11563>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list