Tagged with hevc - Personal View Talks http://www.personal-view.com/talks/discussions/tagged/hevc/feed.rss Fri, 03 May 24 17:05:42 +0000 Tagged with hevc - Personal View Talks en-CA Kaby Lake HEVC decoders have limits http://www.personal-view.com/talks/discussion/15628/kaby-lake-hevc-decoders-have-limits Wed, 31 Aug 2016 06:32:36 +0000 Vitaliy_Kiselev 15628@/talks/discussions image


For example it means that this generation will be unable to playback some HEVC 4k p60 footage made with upcoming cameras.

None of models will support HEVC 422 and 444 playback.

Processors will lack support for HDMI 2.0 ports with HDCP 2.2.

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Codec help! HVC1 encoding http://www.personal-view.com/talks/discussion/15219/codec-help-hvc1-encoding Tue, 14 Jun 2016 19:34:41 +0000 Gethinc 15219@/talks/discussions I've had a stock library refuse my h.265 6K files, but will take hvc1. I'm struggling to find any info on it. Anyone any wiser than me out there? Ideally I'd like to encode straight from adobe media encoder, rather than trans-coding.

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HEVC based DVB-T2 in 1080p50 starting in Germany on 2016-06-01 http://www.personal-view.com/talks/discussion/15148/hevc-based-dvb-t2-in-1080p50-starting-in-germany-on-2016-06-01 Mon, 30 May 2016 15:34:58 +0000 karl 15148@/talks/discussions Two days from now we'll know what the "theoretically best terrestic over-the-air TV broadcast service" announced so far will look like.

I'm writing "theoretically", because on paper the specifications look promising: HEVC encoded 1080p50 video - that's better than the existing 1080i format broadcasted over DVB-T2 in other countries. And up to 26.56 Mbit/s per channel would, theoretically, be enough for very good quality.

But then of course we all know that cost reduction will dictate that not quite the possible quality will be seen in pratice. They will certainly squeeze multiple programmes into those 25.56 Mbit/s, and at least one moronic TV-station (ZDF) has already announced that they will feed the broadcast from their 720p50 production infrastructure, only "upscaling" right before HEVC encoding. (And yes, ZDF mostly gets 1080i material, which they first have to downscale, de-interlace and frame-interpolate to 720p50 - so we can be sure that at least that channel will look like crap.)

But still I'm curious to see what this will look like and tune my LG OLED TV to the new terrestial signal, just for the fun of it.

(To anyone already receiving 4k channels via sattelite, this is certainly boring news - but even not many of those send progressive 50 frames per second.)

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4K HEVC 10 Bit Mastering and Exporting http://www.personal-view.com/talks/discussion/15071/4k-hevc-10-bit-mastering-and-exporting Thu, 12 May 2016 08:25:55 +0000 Tron 15071@/talks/discussions Seeing as how things are finally moving in the direction of HEVC and 10 bit (Rec.2020) on the delivery side of things, I'm curious as to what 10 bit camera recording bitrates we could expect to see coming down the road. ProRes intra codecs seem unnecessarily overweight at 4K resolution and will probably not be offered by Canon, Sony, Panasonic and JVC for internal acquisition (prosumer class). I'd be OK with a long-GOP HEVC codec seeing as how the new GPUs all seem to support hardware decode/encode capability.

Would 200 Mbps be a reasonable bit rate to expect for next-gen cameras like the GH5 if they support internal 10 bit? Any opinions on whether companies like Blackmagic or Atomos will eventually offer a recorder with HEVC option that's easier on storage media? Anyone currently working with10 bit HEVC delivery pipelines? Thanks.

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BPG (Better Portable Graphics) image format based on HEVC intra frame encoding http://www.personal-view.com/talks/discussion/12888/bpg-better-portable-graphics-image-format-based-on-hevc-intra-frame-encoding Tue, 28 Apr 2015 15:49:25 +0000 karl 12888@/talks/discussions Fabrice Bellard (of ffmpeg, Qemu and other fame) has proposed and provides a free implementation of a still image format and codec based on the HEVC video codec standard.

BPG (Better Portable Graphics) is a new image format. Its purpose is to replace the JPEG image format when quality or file size is an issue. Its main advantages are:

  • High compression ratio. Files are much smaller than JPEG for similar quality.
  • Supported by most Web browsers with a small Javascript decoder (gzipped size: 56 KB).
  • Based on a subset of the HEVC open video compression standard.
  • Supports the same chroma formats as JPEG (grayscale, YCbCr 4:2:0, 4:2:2, 4:4:4) to reduce the losses during the conversion. An alpha channel is supported. The RGB, YCgCo and CMYK color spaces are also supported.
  • Native support of 8 to 14 bits per channel for a higher dynamic range.
  • Lossless compression is supported.
  • Various metadata (such as EXIF, ICC profile, XMP) can be included.
  • Animation support.

Find the description, details and links at bellard.org.

For an online comparison of BPG with other still image codecs have a look at this demo.

BTW: Meanwhile, the Daala development team is still struggling to achieve intra-frame encoding on par with HEVC without using patent-encumbered technology.

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