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MrMoo posted:Both EUC-JP and Shift-JIS are fine, the Chinese plethora is definitely not though (GB 18030 et al). Just a giant family of codes that randomly overlap and have no programmatic method to determine which is which. every once in awhile we'll get contacted by someone from far away in the company telling us our software failed some GB18030 test and the workarounds to get it passing are always ultra obnoxious
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Aug 26, 2022 15:52
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all variants of ebcdic
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Aug 26, 2022 16:32
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echinopsis posted:cool avatar is that new I had to check I hadn't been bestowed with a new one, this one is 2 years old.
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Aug 26, 2022 17:30
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MrMoo posted:WebP, AVIF, and HEIF are all wavelet based. MrMoo posted:Correct, anything newer than JPEG and x264/AVC is going to be wavelet based. Unless you can provide a source for that, I'm 99% certain that's wrong. As far as I know, all the new codecs that people actually use (VP8, VP9, H.265, AV1 and the upcoming H.266, plus the image formats derived from them) are still based on DCT and do not use wavelets in any meaningful way.
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Aug 26, 2022 17:54
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I could be poo poo at reading, but all state some level of wavelet usage.quote:Dirac employs wavelet compression, like the JPEG 2000 and PGF image formats and the Cineform professional video codec, instead of the discrete cosine transforms used in MPEG compression formats. Two of the specific wavelets Dirac can use are nearly identical to JPEG 2000's (known as the 5/3 and 9/7 wavelets), as well as two more derived from them.[17] This paper states: quote:Video codecs like HEVC/H.265 or AV1 use discrete cosine transform (DCT) and motion compensation for high compression rates at a reasonable perceptual quality. Overview by Team Netflix. Some tenuous relation that discrete wavelet transforms (DWT) can be used to improve DCT encoding. https://www.semanticscholar.org/pap...feeb31901021b64 This is what AV1 appears to do too: https://aomedia.googlesource.com/aom/+/refs/heads/main/av1/encoder/firstpass.h#57 So yes, I'm terrible at reading, outside of JPEG-2000 and Dirac (abandoned and even domain squatted now), the main technologies are still DCT at the core but may use DWTs to improve coding. https://onlinelibrary.wiley.com/doi/10.1002/cpe.4855 MrMoo fucked around with this message at 19:04 on Aug 26, 2022 |
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Aug 26, 2022 18:36
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I know Dirac was definitely wavelet-based, but I didn't think any of the others used it. The AV1 code you pointed at seems to be used for bitrate allocation for two-pass mode, not for directly coding the bitstream: https://aomedia.googlesource.com/aom/+/refs/heads/main/av1/encoder/firstpass.c#558 This Mozilla blog post about AV1 mentions wavelets, but it seems to be in reference to possible image processing/filtering techniques and not necessary techniques implemented by AV1 itself. I can't find any references to H.265 using wavelets, though I did find this academic paper that specifically compares some experimental wavelet-based codecs against H.265 as an example of a DCT-based codec.
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Aug 26, 2022 19:16
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if AVI and AV1 fought, who do u think would win
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Aug 26, 2022 20:07
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Progressive JPEG posted:if AVI and AV1 fought, who do u think would win which one’s the swappiest? there’s your answer.
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Aug 26, 2022 20:51
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MrMoo posted:I had to check I hadn't been bestowed with a new one, this one is 2 years old. lol it was a joke coz for some reason I thought it was like a decade old
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Aug 27, 2022 11:24
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just use hocon op
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Aug 27, 2022 13:33
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Progressive JPEG posted:if AVI and AV1 fought, who do u think would win Gotta release a new format called AVl followed by AV|
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Aug 27, 2022 15:24
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I think its been three years since I posted this in the thread back then. https://www.youtube.com/watch?v=SylTTiHzZBU (because i was bored and learning After Effects for fun)
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Aug 27, 2022 19:56
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hey it’s url
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Aug 27, 2022 20:04
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Gentle Autist posted:hey it’s url I'm never far away! Hope all is well with you!
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Aug 27, 2022 20:28
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url posted:I'm never far away! and u buddy!
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Aug 27, 2022 21:57
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.docx.pdf
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Sep 2, 2022 13:43
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.vbs
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Sep 4, 2022 07:56
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distortion park posted:.docx.pdf lol
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Sep 4, 2022 08:45
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.usdz I imagine it’s fine for Pixar’s use, but Apple deciding that the “Universal Scene Description” format should be the way to store AR scene information when the AR standard everywhere else is .gltf and 99.9% of all AR development on iPhone is people just wanting to load one, maybe two, 3D models has been very much a PITA. Format might be more useful when the AR glasses come out.
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Sep 4, 2022 17:00
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beyond and besides which gltf is surprisingly not that terrible for the space it inhabits.
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Sep 4, 2022 17:34
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Pulcinella posted:.usdz .usdz nuts
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Sep 6, 2022 00:01
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meet hot .gltf in your area
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Sep 6, 2022 04:03
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speaking of .gltf, did someone already say .fbx a proprietary format that somehow became a standard even though autodesk won't publish the specification for it. if you want to use .fbx you can either use the autodesk c++ sdk, the python importer/exporter that blender reverse engineered, or reverse engineer your own also it can be in either binary or ascii format, and not all 3d software supports both
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Sep 6, 2022 13:53
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autodesk is basically the adobe of 3d
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Sep 6, 2022 14:18
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Zlodo posted:autodesk is basically the adobe of 3d I recently started to play with the 3D apps, just for shits and giggles. It's been literal decades since I did,and by Christ they got good while I wasn't looking. That said, fukn lol at the gltf, vs, fbx, vs obj, it's an horrific cluster gently caress of a mess. To get back on point, Adobe are very much establishing their reputation as being the rightful owner of the crown 'the' Adobe of 3D. Autodesk might have their own circle in hell, but gd Adobe have a ticket for that bus and they are not hanging around waiting.
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Sep 6, 2022 23:57
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heif
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Sep 8, 2022 03:54
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dont know what a webp is but its fail -_-
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Jul 6, 2023 15:19
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webp is the one that doesn't open in anything and looks like a jpeg saved at 30% quality
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Jul 6, 2023 15:21
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Sweevo posted:webp is the one that doesn't open in anything that's heic
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Jul 6, 2023 15:47
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polyester concept posted:that's heic no, that's the ghostbusters drink
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Jul 6, 2023 16:02
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PDF
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Jul 6, 2023 17:24
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bbcode
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Jul 7, 2023 14:47
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could’ve saved a lot of pages by making this the not terrible formats thread
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Jul 7, 2023 23:26
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unironically enjoy a good well encoded pdf
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Jul 8, 2023 00:35
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obj was ok because they were easy to edit by hand, if you wanted to you could draft out simple models on paper and type them in it's probably a bit dated now tho
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Jul 8, 2023 06:53
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echinopsis posted:unironically enjoy a good well encoded pdf same, although pdf also allows people to scan 9th-generation photocopies at 600dpi and not OCR them what i'm saying is that pdf is a land of contrasts
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Jul 8, 2023 12:49
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.str video & interleaved .xa audio but I have a soft spot for potato encoding, the artefacts make my brain fuzzy like vinyl pop or vhs warble or casette flutter & wow for whatever reason the old ps1 devkit tools kept eating poo poo on my avi files but it does work by first converting to cinepak. extra flavour
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Jul 8, 2023 16:04
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along those lines, duck motion, but these old codecs are actually good
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Jul 8, 2023 16:12
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I just remembered XNG
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Jul 8, 2023 16:18
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Silver Alicorn posted:I just remembered XNG oh yeah wasn’t that suspicious dish’s project I remember them posting that back in uhhh. I guess 2014 lol OldAlias fucked around with this message at 16:42 on Jul 8, 2023 |
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Jul 8, 2023 16:39
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