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NolanOBrien's profile
Nolan O'Brien
Nolan O'Brien
Nolan O'Brien
@NolanOBrien

Tweets

Nolan O'Brien

@NolanOBrien

🇨🇦🇺🇸 | code wrangler / doc writer | in Vegas | work @Twitter | alum: @amazon/@zappos, @cisco/@linksys & @UWCSE | husband | dad of 5 | ♥️ 80s movies & whisky

Las Vegas
Joined September 2011

Tweets

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  1. Nolan O'Brien‏ @NolanOBrien Dec 10

    Starting today, Twitter will preserve JPEGs as they are encoded for upload on Twitter for Web. (Caveat, cannot have EXIF orientation) For example: the attached photo is actually a guetzli encoded JPEG at 97% quality with no chroma subsampling. https://en.wikipedia.org/wiki/Guetzli pic.twitter.com/Eyq67nfM0E

    118 replies 2,214 retweets 4,996 likes
    Show this thread
  2. Ferdy Christant‏ @fchristant Dec 11
    Replying to

    I welcome this improvement but cannot replicate it. See how on this test photo, the top photo is on Twitter web, bottom is the original. Twitter web version continues to wash away color and sharpness. Am I doing something wrong, or expecting too much?pic.twitter.com/UWnMPmYyPZ

    2 replies 6 retweets 34 likes
    Nolan O'Brien‏ @NolanOBrien
    Replying to @fchristant

    Steps to check: 1) if it has orientation set to rotate the image, we will transcode 2) if it is over 4096 in any dimension, we will transcode 3) if it is over 5 MBs, we will transcode 4) if the compression is very inefficient (worse than 1 pixel per byte), we will transcode

    11:16 AM - 11 Dec 2019 from Henderson, NV
    • 260 Retweets
    • 407 Likes
    • Matthew Cassinelli 高野 敏匡 pomegranate451 Travis Karr Rachel O'Driscoll ᴅᴀɴɪᴇʟ ✖ ᴅᴇᴡ Abigail Keenan Lazytigre セクシー炭水化物
    5 replies 260 retweets 407 likes
      1. Nolan O'Brien‏ @NolanOBrien Dec 11
        Replying to @NolanOBrien @fchristant

        If you post again, feel free to send me the Tweet and I can investigate

        0 replies 0 retweets 9 likes
      1. New conversation
      2. Ferdy Christant‏ @fchristant Dec 11
        Replying to @NolanOBrien

        Ah yes, thank you. It's both 2 and 3. Using a D850 which produces w > 8000 and I export down to 15MB. Seems large but is already compressed coming from 60MB.

        2 replies 0 retweets 2 likes
      3. Nolan O'Brien‏ @NolanOBrien Dec 11
        Replying to

        wow -- that's quite the source image! If you can drop it down to under 4096x, it should preserve quite beautifully.

        2 replies 0 retweets 4 likes
      4. 9 more replies
      1. New conversation
      2. Rafi R‏ @wtf_rafi Dec 11
        Replying to @NolanOBrien @fchristant

        Congrats and amazing job! These were actually the important details I was looking for!! So photos of roughly 12MP, and at or under 5 MB won’t have any transcoding when displayed in full? That’s huge. Is there any scenario that would trigger chroma subsampling?

        1 reply 0 retweets 1 like
      3. Nolan O'Brien‏ @NolanOBrien Dec 11
        Replying to

        If we trigger a transcode, we will apply chroma subsampling. No transcode will mean no subsampling.

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. ふみ ❅*॰ॱ。‏ @fumi_photo Dec 11
        Replying to @NolanOBrien

        I appreciate your hard work! Great update✨ also thank you so much for the details! I'll check my export settings on Photoshop right away XD

        0 replies 0 retweets 4 likes

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