Starlink has bufferbloat. Bad.
 help / color / mirror / Atom feed
From: "David Fernández" <davidfdzp@gmail.com>
To: starlink <starlink@lists.bufferbloat.net>, alexandre.petrescu@gmail.com
Subject: Re: [Starlink] It’s the Latency, FCC
Date: Mon, 6 May 2024 15:21:21 +0200	[thread overview]
Message-ID: <CAC=tZ0pmTnadbRKFaWbsULZpotB+67UHyz53ZCP8Li2SAneJZw@mail.gmail.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 2163 bytes --]

For " I dont know what MPEG codec is it, at what mbit/s speed" you may
check this:
https://lists.bufferbloat.net/pipermail/starlink/2024-April/002706.html

From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
To: Frantisek Borsik <frantisek.borsik@gmail.com>, Colin_Higbie
        <CHigbie1@higbie.name>
Cc: "starlink@lists.bufferbloat.net" <starlink@lists.bufferbloat.net>
Subject: Re: [Starlink] It’s the Latency, FCC
Message-ID: <298126c9-7854-47c5-a965-c0f89a855939@gmail.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"


Le 02/05/2024 à 21:50, Frantisek Borsik a écrit :
> Thanks, Colin. This was just another great read on video (and audio -
> in the past emails from you) bullet-proofing for the near future.
>
> To be honest, the consensus on the bandwidth overall in the
> bufferbloat related circles was in the 25/3 - 100/20 ballpark


To continue on this discussion of 25mbit/s (mbyte/s ?) of 4k, and 8k,
here are some more thoughts:

- about 25mbit/s bw needs for 4K:  hdmi cables for 4K HDR10 (high
dynamic range) are specified at 18gbit/s and not 25mbit/s (mbyte?).
These HDMI cables dont run IP.  But, supposedly, the displayed 4K image
is of a higher quality if played over hdmi (presumably from a player)
than from a server  remote on the Internet.   To achieve parity, maybe
one wants to run that hdmi flow from the server with IP, and at that
point the bandwidth requirement is higher than 25mbit/s.  This goes hand
in hand with the disc evolutions (triple-layer bluray discs of 120Gbyte
capacity is the most recent; I dont see signs of that to slow).

- in some regions, the terrestrial DVB (TV on radio frequencies, with
antenna receivers, not  IP) run at 4K HDR10 starting this year.  I dont
know what MPEG codec is it, at what mbit/s speed. But it is not over the
Internet.  This means that probably  ISPs are inclined to do more than
that 4K over the Internet, maybe 8K, to distinguish their service from
DVB.  The audience of these DVB streams is very wide, with cheap
one-time buy receivers (no subscription, like with ISP) already widely
available in electronics stores.

[-- Attachment #2: Type: text/html, Size: 2999 bytes --]

             reply	other threads:[~2024-05-06 13:22 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-06 13:21 David Fernández [this message]
  -- strict thread matches above, loose matches on Subject: below --
2024-05-06 15:42 David Fernández
2024-05-03  9:09 [Starlink] It's " David Fernández
     [not found] <mailman.2877.1714641707.1074.starlink@lists.bufferbloat.net>
2024-05-02 14:47 ` [Starlink] It’s " Colin_Higbie
2024-05-02 19:50   ` Frantisek Borsik
2024-05-06 11:19     ` Alexandre Petrescu
2024-05-06 13:43       ` Nathan Owens
2024-05-06 15:22         ` Colin_Higbie
2024-05-14 19:23       ` Colin_Higbie
2024-05-15  6:52         ` Sebastian Moeller
2024-05-15 14:55           ` Colin_Higbie
2024-05-03  1:48   ` Ulrich Speidel
2024-05-03  7:22     ` Jeremy Austin
2024-05-03  9:02     ` Alexandre Petrescu
2024-05-03  8:29   ` Alexandre Petrescu
2024-05-03  8:34   ` Alexandre Petrescu
2024-05-01 16:35 [Starlink] It's " David Fernández
2024-05-01  8:41 David Fernández
     [not found] <mailman.2785.1714507537.1074.starlink@lists.bufferbloat.net>
2024-04-30 20:48 ` [Starlink] It’s " Colin  Higbie
2024-04-30 20:49   ` Colin_Higbie
2024-05-01  0:51   ` David Lang
     [not found] <mailman.2779.1714503924.1074.starlink@lists.bufferbloat.net>
2024-04-30 19:31 ` Colin_Higbie
2024-04-30 19:51   ` Eugene Y Chang
2024-04-30 21:07     ` Dave Taht
2024-04-30 21:22       ` Frantisek Borsik
2024-04-30 22:02         ` Dave Taht
2024-04-30 22:03           ` Dave Taht
2024-04-30 22:05         ` [Starlink] Fwd: " Rich Brown
2024-04-30 22:10           ` Dave Taht
2024-04-30 22:42             ` [Starlink] " Rich Brown
2024-04-30 23:06               ` Dave Taht
2024-04-30 22:31           ` Eugene Y Chang
2024-04-30 21:22       ` Eugene Y Chang
2024-04-30 21:35         ` Frantisek Borsik
2024-04-30 21:53           ` Eugene Y Chang
2024-05-01  0:54             ` David Lang
2024-05-01  7:27             ` Frantisek Borsik
2024-05-01 19:26               ` Eugene Y Chang
2024-05-14 16:05                 ` Dave Taht
     [not found] <mailman.2775.1714488970.1074.starlink@lists.bufferbloat.net>
2024-04-30 19:12 ` Colin_Higbie
2024-04-30 19:31   ` Eugene Y Chang
2024-05-01  0:33     ` David Lang
2024-05-01  0:31   ` David Lang
2024-05-01  0:40     ` [Starlink] It?s " David Lang
     [not found] <mailman.2773.1714488060.1074.starlink@lists.bufferbloat.net>
2024-04-30 18:05 ` [Starlink] It’s " Colin_Higbie
2024-04-30 19:04   ` Eugene Y Chang
2024-05-01  0:36     ` David Lang
2024-05-02  9:09     ` Alexandre Petrescu
2024-05-02  9:28       ` Ulrich Speidel
2024-04-30 20:05   ` Sebastian Moeller
2024-05-02  9:21     ` Alexandre Petrescu
     [not found] <mailman.2769.1714483871.1074.starlink@lists.bufferbloat.net>
2024-04-30 14:00 ` Colin_Higbie
2024-04-30 14:25   ` Alexandre Petrescu
2024-04-30 14:32     ` Sebastian Moeller
2024-04-30 14:40       ` Alexandre Petrescu
2024-04-30 14:45         ` Sebastian Moeller
2024-04-30 14:56           ` Alexandre Petrescu
2024-04-30 15:04             ` David Lang
2024-04-30 15:01         ` David Lang
2024-04-30  9:54 David Fernández
     [not found] <mailman.2495.1710610618.1074.starlink@lists.bufferbloat.net>
2024-03-16 19:10 ` Colin_Higbie
2024-03-16 19:32   ` Sebastian Moeller
2024-03-17 17:00   ` Alexandre Petrescu
2024-03-17 19:26     ` Frantisek Borsik
     [not found] <mailman.11.1710518402.17089.starlink@lists.bufferbloat.net>
2024-03-15 18:32 ` Colin  Higbie
2024-03-15 18:41   ` Colin_Higbie
2024-03-15 19:53     ` Spencer Sevilla
2024-03-15 20:31       ` Colin_Higbie
2024-03-16 17:18         ` Alexandre Petrescu
2024-03-16 17:21           ` Alexandre Petrescu
2024-03-16 17:36           ` Sebastian Moeller
2024-03-16 22:51             ` David Lang
2024-03-15 23:07       ` David Lang
2024-03-16 18:45         ` [Starlink] Itʼs " Colin_Higbie
2024-03-16 23:05           ` David Lang
2024-03-17 15:47             ` [Starlink] It’s " Colin_Higbie
2024-03-16 18:51         ` [Starlink] It?s " Gert Doering
2024-03-16 23:08           ` David Lang
2024-04-30  0:39   ` [Starlink] It’s " David Lang
2024-03-15  3:53 Larry Press
2024-03-15  5:33 ` Dave Taht
2024-03-15 21:14   ` Michael Richardson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://lists.bufferbloat.net/postorius/lists/starlink.lists.bufferbloat.net/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAC=tZ0pmTnadbRKFaWbsULZpotB+67UHyz53ZCP8Li2SAneJZw@mail.gmail.com' \
    --to=davidfdzp@gmail.com \
    --cc=alexandre.petrescu@gmail.com \
    --cc=starlink@lists.bufferbloat.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox