Tango, photography and whatever's bleeding edge
Some remarks on the Coditel digital television system that I have been using for the last two weeks:
Way too many useless channels
I could now watch channels like Nile TV, Qatar TV and Al Jazeera for Kids. But no Discovery Channel or National Geographic. On the good side: I now have Vijf TV and Vitaya, which was not the case with analog TV.
Continue reading ‘Coditel digital television’
After a conversation with Ine on HD formats (1080i vs. 1080p), I researched the topic a bit further. Let me resume some of the things I have learned up till now:
HD or ‘high definition’ as defined for screens, projectors and TV, defines 2 resolutions. The smaller one has 720 lines of each 1280 pixels, the bigger one 1080 lines of each 1920 pixels. They can be used with different frame rates: refreshed at 24 fps (a common movie standard) up to 50/60fps (often used for TV). To limit the necessary bandwidth in some cases ‘interlaced scanning’ is used: 1 frame contains all the odd lines, the next only the even lines. This effectively halves the throughput, at the cost of image quality (rapid moving lines appear jagged).
The two most common formats are:
What kind of resolution do we have now? Regular digital TV (SD or ‘Standard Definition’) consists of 480 lines of 720 pixels each. DVD, for instance, allows for 480i and 480p. So, HD delivers at least 3x that resolution.
“HD Ready“, a label that a lot of TVs/screens carry now, just indicates that:
- The minimum native resolution of the display (e.g. LCD, PDP) or display engine (e.g. DLP) is 720 physical lines in wide aspect ratio.
- The display device accepts HD input via Analogue YPbPr1, DVI or HDMI
- HD capable inputs accept the following HD video formats: 1280×720 @ 50 and 60Hz progressive (“720p”), and 1920×1080 @ 50 and 60Hz interlaced (“1080i”)
- The DVI or HDMI input supports content protection (HDCP)
from eicta.org (PDF)
Even if the display can only show 720p, and so must ‘downsample’ an incoming 1080i signal to that lower resolution, it can be called “HD Ready”.
Continue reading ‘HD – 720p, 1080i and 1080p’
Ever wondered if you needed a caching plugin for your WordPress blog? You have the impression your blog’s homepage takes forever to load? You hate it when your friends call your blog ‘interesting, but so slow’?
Well, I did, so I wanted to find out just how slow it was. I set up an MRTG monitoring system on my Dreamhost account. First thing I did was to add 2 tests:
Let’s take a look at the CSS file first:
The green line is my 500ms treshold: everything above it is too slow.You see that most of the time my CSS file can be downloaded faster than that (actually the average is around 250ms). There is the occasional peak, which might be caused by temporary network congestion or a server busy doing other stuff – it IS a shared hosting after all.
Now compare this to the time it takes to get my homepage: Continue reading ‘WP-Cache speeds up your WordPress!’
(post in Dutch)
Get this video and more at MySpace.com
Teruggevonden via MySpace, een filmpje van (denk ik) 2004:
Kunnen West-Vlamingen tellen? Vraag dat aan Boer Klerk, Rudolf Vanmoerkerke en Christian Dumoulin. Zij mogen niet tellen in het filmpje dat Kurt Vandemaele maakte naar aanleiding van de 1 Minuut Film and Sound Awards in Leffinge. Net zomin als Jean-Luc Dehaene, Yves Letherme of hun collega’s politici. Wie dan wel? De lijst ziet u hieronder.
Het filmpje met de 60 tellende West-Vlamingen is zaterdag voor het eerst te zien in het programma ZIETA op WTV en FOCUS. Maandag hoort u de zestig tellen in De Nieuwe Wereld bij Friedl’ Lesage. Een gelegenheid om speciaal te letten op de muziek die Piet Goddaer speciaal voor het filmpje gecomponeerd heeft. Op 18 september draait het filmpje tijdens Leffingeleuren om het uur op een groot scherm op de markt van Leffinge. Dit zijn alvast de zestig bekende West-Vlamingen die u hoort en ziet tellen:
(via Het Virtuele Perscentrum)
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