Re: Studying Lossy Image Compression Efficiency, July 2014

2014-07-24 Thread Josh Aas
On Friday, July 18, 2014 10:05:19 AM UTC-5, j...@cloudflare.com wrote: > I selected 10,000 random JPEGs that we were caching for customers and ran > them through mozjpeg 2.0 via jpegtran. Some interesting facts: With mozjpeg you probably want to re-encode with cjpeg rather than jpegtran. We add

Re: Studying Lossy Image Compression Efficiency, July 2014

2014-07-24 Thread Josh Aas
> Are there any plans to integrate into other tools, specifically imagemagick? > > Or would you leave that up to others? For now we're going to stay focused on improving compression in mozjpeg's library. I think a larger improved toolchain for optimizing JPEGs would be great, but it's probably

Re: Studying Lossy Image Compression Efficiency, July 2014

2014-07-24 Thread Josh Aas
On Tuesday, July 15, 2014 3:15:13 PM UTC-5, perez@gmail.com wrote: > #1 Would it be possible to have the same algorithm that is applied to webP to > be applied to JPEG? I'm not sure. WebP was created much later than JPEGs, so I'd think/hope they're already using some equivalent to trellis q

Re: Studying Lossy Image Compression Efficiency, July 2014

2014-07-15 Thread Josh Aas
Study is here: http://people.mozilla.org/~josh/lossy_compressed_image_study_july_2014/ Blog post is here: https://blog.mozilla.org/research/2014/07/15/mozilla-advances-jpeg-encoding-with-mozjpeg-2-0/ ___ dev-platform mailing list dev-platform@lists.moz

Studying Lossy Image Compression Efficiency, July 2014

2014-07-15 Thread Josh Aas
This is the discussion thread for Mozilla's July 2014 Lossy Compressed Image Formats Study and the Mozilla Research blog post entitled "Mozilla Advances JPEG Encoding with mozjpeg 2.0". ___ dev-platform mailing list dev-platform@lists.mozilla.org https:

Re: Studying Lossy Image Compression Efficiency

2013-10-17 Thread Josh Aas
On Thursday, October 17, 2013 12:50:12 PM UTC-5, cry...@free.fr wrote: > Thank you for publishing this study, here are my first questions: > > - Why didn't you include JPEG 2000? We couldn't test everything, we picked a small set of the formats that we hear the most about and that seem interesti

Re: Studying Lossy Image Compression Efficiency

2013-10-17 Thread Josh Aas
Blog post is here: https://blog.mozilla.org/research/2013/10/17/studying-lossy-image-compression-efficiency/ Study is here: http://people.mozilla.org/~josh/lossy_compressed_image_study_october_2013/ ___ dev-platform mailing list dev-platform@lists.mozi

Studying Lossy Image Compression Efficiency

2013-10-17 Thread Josh Aas
This is the discussion thread for the Mozilla Research blog post entitled "Studying Lossy Image Compression Efficiency", and the related study. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform

Re: improving access to telemetry data

2013-02-28 Thread Josh Aas
On Thursday, February 28, 2013 8:16:50 AM UTC-6, Benjamin Smedberg wrote: > Have we discussed this project with the metrics team yet? When I started looking into this it wasn't clear to me that people really knew what they wanted - they just knew why the existing system didn't work for them. My

improving access to telemetry data

2013-02-27 Thread Josh Aas
I've been thinking about how we might improve access to telemetry data. I don't want to get too much into the issues with the current front-end, so suffice it to say that it isn't meeting my group's needs. I solicited ideas from Justin Lebar and Patrick McManus, and with those I came up with an

TimeStamp too expensive?

2013-01-06 Thread Josh Aas
I was working on something for which TimeStamp and TimeDuration classes would be helpful in simplifying code that deals with a cache expiration date. This code does not require high-precision timing. In review I was told that "TimeStamp shouldn't be used unless a hi-precision ms resolution is ne