Reply to thread

Message

<blockquote data-quote="velis" data-source="post: 560135" data-attributes="member: 96429">I have the same problem as you.I believe the culprit here is renderer scaling algorithm. The scaling is done with the pathetic block method instead of a more sophisticated one like Lanczos or Spline.I haven't yet started digging through code so I'm not sure how the scaling is actually implemented, but I'm pretty sure the algorithm is bad. One can see algorithm idiocracies on stationary feed with recognizable 2D elements like letters or lines. Instead of nice aliasing, they are blocky as hell!The reason you interpret the picture as fuzzy is precisely because of this: A small change in source image (TV feed) causes a relatively large change in the rezised output (a block of multiple pixels). Since with somebody talking close-up, not much changes in the source, the remaining few changes make a huge impact in overall picture quality.One of the reasons I'm attempting to pinpoint the reason for ffdshow ban in TsReader. I want ffdshow as the TV playback codec since it can do nice resizing. With a full HD picture to work with even this scaler does a much better job...Said differently: if you set your resolution to 720x576 (even if it were possible), your TV will do the scaling and do it much better than MP. But you won't be able to enjoy the full HD content then...</blockquote>

[QUOTE="velis, post: 560135, member: 96429"] I have the same problem as you. I believe the culprit here is renderer scaling algorithm. The scaling is done with the pathetic block method instead of a more sophisticated one like Lanczos or Spline. I haven't yet started digging through code so I'm not sure how the scaling is actually implemented, but I'm pretty sure the algorithm is bad. One can see algorithm idiocracies on stationary feed with recognizable 2D elements like letters or lines. Instead of nice aliasing, they are blocky as hell! The reason you interpret the picture as fuzzy is precisely because of this: A small change in source image (TV feed) causes a relatively large change in the rezised output (a block of multiple pixels). Since with somebody talking close-up, not much changes in the source, the remaining few changes make a huge impact in overall picture quality. One of the reasons I'm attempting to pinpoint the reason for ffdshow ban in TsReader. I want ffdshow as the TV playback codec since it can do nice resizing. With a full HD picture to work with even this scaler does a much better job... Said differently: if you set your resolution to 720x576 (even if it were possible), your TV will do the scaling and do it much better than MP. But you won't be able to enjoy the full HD content then... [/QUOTE]

Verification