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13th February 2020, 13:09 | #2061 | Link |
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Cool that they seem to go 10 bit even for mobile. It's time companies start to see 10 bit as a coding tool increasing compression instead of using it for HDR only. I would hope they start using AV1 10 bit for desktop, too. I'm temporarily on a slow (5~6 Mbps) connection and there can be horrible banding (among other artifacts) when viewing via Chrome (I assume H.264 8 bit).
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13th February 2020, 20:59 | #2062 | Link |
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I have finished three encodes matching up "vmaf_without_preprocessing" against x265 placebo, and I am completely stunned.
The new vmaf tuning has definitely put libaom in first place not only in metrics but clearly in visual quality! I hope they will manage to speed it up in the future |
14th February 2020, 03:45 | #2064 | Link |
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Interesting, correct me if I'm wrong but it's not really a matter of DRM "supporting AV1" as much as it is AV1 having a defined mapping into fMP4 with common encryption (CENC), right? Once that's all set then any DRM that supports CENC would work, be it software Widevine L3 or hardware Widevine L1 or PlayReady SL3000 etc?
Is that mapping still really not done for AV1?? |
14th February 2020, 13:07 | #2065 | Link | |
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AVIF for Next-Generation Image Coding
https://netflixtechblog.com/avif-for...ng-b1d75675fe4 Quote:
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16th February 2020, 00:31 | #2067 | Link |
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JPEG XL is a strong contender. It seems to have buy in from a similarly diverse set of implementors as AV1, but one key advantage is that it can seamlessly and losslessly upgrade existing JPEG content, which would probably make it attractive to web deployment even if it didn't offer anything else. If it's well integrated with HTTP2 and browsers then progressive loading is a second "killer app" it provides and again that alone could probably justify its rollout as the subjective improvement in partial loading display would be dramatic even if the objective improvements were equal or even negative.
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16th February 2020, 19:09 | #2068 | Link | |
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Major studios generally require HW DRM integrated with HW decoders for premium HD content. And lots of platforms straight up doing allow their SW codecs to use the HW DRM features. For example, iOS has HEVC software decoders for all device supported by the iOS version that introduced HEVC playback. But FairPlay DRM straight up won't work on the device without the HW decoder. |
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16th February 2020, 20:00 | #2069 | Link | |
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But HEVC and patents. AV1 is a strong still image codec, and the patent exposure elminating all the interframe stuff is even smaller. Screen coding tools. And SW decode is a lot more feasible for just images, and DRM is rarely a requirement for them too. Broad AVIF support in browsers seems like something that could happen quite quickly, and be of use with much less infrastructure than video. A PhotoShop export component and integration into ImageMagick and we'd be ready to go. |
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16th February 2020, 21:40 | #2070 | Link | |||
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Quote:
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Last edited by Blue_MiSfit; 16th February 2020 at 21:42. |
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20th February 2020, 17:14 | #2071 | Link | |
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rav1e 0.3.1 released
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23rd February 2020, 09:53 | #2072 | Link | ||
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Apologies for the off-topic post, but I just wanted to give an update on the final conclusion - I just confirmed today that FLAC audio is in fact supported (at least up to 192KHz 24bit, same goes for LPCM as 32float LPCM failed to work) and, as expected, it's the 10bit AVC (not a typo) that is completely unsupported on LG's 2019 OLEDs. ...though more surprising to me was that it not only supported multi-audio MKVs/MP4s with an according GUI-based audio track switcher, but even supported freaking SubStation Alpha subtitles in an MKV also with an according GUI-based toggle. That is all, and I will refrain from going on about this subject farther. BTW SmilingWolf, if you're reading this, I got to watch our waifu2x-upscaled UBW Vita OP the LG E9 OLED TV (65" model). 10/10 would recommend.
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24th February 2020, 09:31 | #2075 | Link |
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Apologies for the delayed response and for another somewhat off-topic post, but it was only just now that I came across a video with the according WebM-in-chunks formatting that I previously mentioned in this thread and I didn't think it'd be wise to make a whole new thread for a discussion that will probably last all of like two posts.
This does not seem to work on the following video's 1080p VP9 encode: https://www.youtube.com/watch?v=K60qpDSSnJU (assuming that I'm not doing something wrong of course, which is always a possibility)
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24th February 2020, 12:22 | #2076 | Link |
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Historically, those have been entirely unusable, especially from Intel. So I hope they won't waste their time on it.
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LAV Filters - open source ffmpeg based media splitter and decoders |
24th February 2020, 19:33 | #2077 | Link | |
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Quote:
Or it could be some boring reason, like the video server requiring certain headers, or the server is, for some reason, tied to a specific old quic/http3 draft. Who knows. Well, at least audio/Opus unfragmented streams still work.
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26th February 2020, 12:19 | #2078 | Link |
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AOM newsletter: https://aomedia.org/wp-content/uploa...0-upadated.pdf
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27th February 2020, 11:56 | #2079 | Link | |
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I just played youtube videos, with AV1 enabled and disabled, nothing scientific. But roughly that's what I experienced in cpu usage use. Last edited by mzso; 27th February 2020 at 12:01. |
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27th February 2020, 14:34 | #2080 | Link | |
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What browser/version, and on what platform/OS?
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