Christian Timmerer

@timmerer.com

423 Followers 206 Following

Researcher, entrepreneur & teacher on immersive multimedia communication, streaming, adaptation, & QoE. CIO & Co-Founder at Bitmovin (YC S15). Professor at AAU/ITEC. http://timmerer.com

Close-up of a cappuccino in a white cup served with a glass of chilled water on a café table. The coffee’s smooth milk foam fills the cup, while a blurred menu stand and café seating in the background create a relaxed atmosphere.
A small cup of espresso sits on a white saucer beside a shelf of classic multimedia and networking textbooks, including volumes on MPEG-2, MPEG-4, MPEG-21, multimedia communications, and quality of experience. A gold Emmy Award statuette stands prominently among the books, creating a scene that blends academic research, media technology, and a quiet coffee break.
Timeline slide illustrating the MPEG standardization roadmap from 2025 to 2029. Colored horizontal bars show the expected development of dozens of projects grouped into Media Coding, Systems and Tools, and Beyond Media. Topics include immersive video, machine-oriented coding, point cloud compression, lenslet video coding, Gaussian splat coding, DASH, CMAF, file formats, metadata, media authenticity, genomic data support, and neural network compression, highlighting MPEG’s broad research and standardization agenda over the coming years.
Close-up of a cup of coffee with a playful smiling face design, served on a colorful star-shaped saucer. A small nut-covered chocolate treat and a teaspoon sit beside the cup on a wooden table.
Screenshot of a conference paper submission system showing the editorial decision for ACMMM 2026. The recommendation is “Accept”, indicating the paper has been accepted for publication.
People seated at long tables on a covered lakeside terrace, enjoying lunch and conversation during a social gathering. The terrace overlooks the turquoise waters of Lake Wörthersee, with forested hills and mountains in the background, creating a relaxed setting for networking and informal discussions.
Panoramic view of Lake Wörthersee from a forested hillside, with turquoise water stretching through the valley and small islands visible near the center. Evergreen trees frame the foreground, while towns, rolling hills, and distant mountain ranges extend beneath a dramatic sky filled with sunlit clouds.
Three people raise glasses of beer for a toast in a lively pub while a football match is shown on large TV screens in the background. The warm, casual atmosphere suggests friends or colleagues enjoying the game together, with colorful flags and sports memorabilia decorating the venue.
Wide view of a modern lecture hall during an academic conference. A speaker presents from the front while attendees seated in tiered rows follow the talk, many using laptops or taking notes. Multiple large projection screens display the presentation, highlighting an active and collaborative research environment.
Presenter giving a conference talk on visual quality modelling in a lecture hall. The slide illustrates the progression from traditional image quality metrics (e.g., PSNR, SSIM, LPIPS) toward perceptual models of human vision, emphasizing the shift from correlation-based to causation-based quality assessment. Two large projection screens display the presentation while the speaker explains the concepts.
Large lecture hall during an academic conference, with a speaker presenting at the front while attendees fill the tiered seating. Multiple projection screens display presentation slides, and many participants follow along on laptops or take notes, creating an engaged and collaborative atmosphere.
Group photo following an academic habilitation presentation titled “Predictive Video Encoding using Visual Complexity Analysis.” Seven people stand in front of a projection screen displaying the presentation title, with the presenter dressed in a dark suit among colleagues and guests in a university seminar room equipped with presentation screens and a whiteboard.
Illustration of the “blame game” in video streaming quality problems. A circular diagram shows four stakeholders pointing responsibility at one another: the OS vendor blames the internet connection, the service provider blames the video/CDN provider, the video/CDN provider blames the user’s home network, and the consumer blames the device or app. In turn, the device/app vendor blames the operating system. At the center, two people point fingers at each other, highlighting the challenge of identifying the true cause of poor video streaming performance.
Promotional poster for the University of Klagenfurt’s “40 Years of Computer Science” celebration. The design features an aerial sunset view of the university campus and surrounding lakeside landscape integrated into the university’s logo shape. Event details include: 20 November 2026, from 2:00 PM, at Lakeside Science & Technology Park, Lakeside Spitz B.11, Leibniz Room. The slogan “Save the Date” appears vertically along the right side.
Television broadcast of a football match in a packed stadium, with fans dressed in red and blue filling the stands behind one of the goals. The image includes live broadcast graphics in the top-right corner and advertising boards surrounding the pitch. Logo shows live ORF in UHD (4K) quality
Figure and ALT text created by ChatGPT based on link to Wikipedia URL. A dark blue themed infographic celebrating National Streaming Day on May 20. Large bold text on the left reads “National Streaming Day” with a subtitle describing it as a day to celebrate shows, movies, and creators that entertain and connect people anywhere. On the right, a modern living room scene shows a large TV displaying a streaming interface with categories such as adventure, drama, sci-fi, comedy, and thriller. A bowl of popcorn, a remote control, and a coffee mug sit on a table in front of the TV. Below, three information panels summarize key facts: * “The Basics” panel lists the date (May 20), observed in the United States, established in 2021, and founded by National Day Calendar. * “Streaming by the Numbers” panel highlights statistics about streaming adoption and viewing habits. * “Ways to Celebrate” panel suggests binge-watching a favorite series, discovering something new, streaming together, and supporting creators. The bottom banner encourages viewers to “Press Play” and celebrate stories that move them. The overall design uses glowing cyan and purple accents, streaming icons, and a sleek modern entertainment aesthetic.
Screenshot of the iPhone Weather app showing conditions for Klagenfurt am Wörthersee: 11°C and mostly cloudy, with a high of 13°C and low of 5°C. Rain is expected around 1 PM, and the forecast shows rainy weather through Saturday before sunnier conditions on Sunday.
Peaceful lakeside landscape with a grassy shore, wooden piers extending into calm water, and forested hills dotted with houses in the background. Large white clouds rise dramatically against a bright blue sky, reflecting softly on the lake.
Rows of small white beach cabins arranged neatly on a green lawn under tall trees, with a lake and distant hills visible in the background. Bright sunshine and a clear blue sky create a calm, summery atmosphere.
Sunny outdoor cycling event by a lakeside, with many participants gathered around bikes near a yellow inflatable start/finish arch. Flags and spectators line the path, while boats and buildings sit along the water, creating a lively, festive atmosphere.
Wide view of a green meadow under a clear blue sky, with a modern university building in the mid-ground and snow-capped mountains stretching across the horizon. Trees frame the scene on both sides, suggesting a peaceful campus setting in spring.
Group photo of a diverse research team standing in a bright meeting room behind a large conference table with laptops and coffee mugs. A whiteboard with diagrams is visible in the background, and sunlight enters through large windows on the right.
Clear alpine lake with calm green-blue water revealing rocks beneath the surface near the shore. Reeds and a walking path line the left side, while forested hills and snow-capped mountains rise in the distance under a bright blue sky with scattered clouds.
Collage of operating system logos and names on a white background, including Windows (98, XP, Vista, 7, 8, 10), macOS, Linux (with Tux penguin), UNIX, Solaris, FreeBSD, Android, iOS, Chrome OS, Novell, IBM OS/2, Symbian, BlackBerry, Amiga, and many others, illustrating the wide variety of desktop, mobile, and server operating systems.
Sunset over a calm lake with mountains in silhouette along the horizon. The sky glows orange and gold fading into deep blue, reflected smoothly on the water’s surface. A small pier extends from the right, and a lone duck creates gentle ripples in the foreground under a clear evening sky.
Bitmovers at the global meet up 2026 following the presentation of CEO Stefan Lederer
Why is the arXiv CS category making this change? In the past few years, arXiv has been flooded with papers. Generative AI / large language models have added to this flood by making papers – especially papers not introducing new research results – fast and easy to write. While categories across arXiv have all seen a major increase in submissions, it’s particularly pronounced in arXiv’s CS category.
Call for participation post for the Int'l Conf. on Visual Communications and Image Processing (VCIP'25) featuring keynotes by Thomas Wiegand, Daniel Schien, and Silvia Miksch 1-4 December 2025, Klagenfurt, Austria Early bird registration deadline: 31 Oct, 2025 Web site: https://vcip2025.itec.aau.at/
Apple power plug with a missing 2nd USB-C port.
Outdoor drone area under construction
Attendees of ACM SIGCOMM EMS workshop.
Announcing Silvia Miksch from TU Wien as keynote speaker for VCIP 2025 on Where Complexity Meets Clarity: Visual Analytics in Time and Space
Announcing Thomas Wiegand from Fraunhofer HHI / TU Berlin as keynote speaker for VCIP 2025 on Trustworthy Multimedia Communication in the Age of AI Deep Fakes