[Starlink] Testing 4K live video over Starlink with added +10% packet loss

[Starlink] Testing 4K live video over Starlink with added +10% packet loss

[Sauli Kiviranta]

We start to get somewhere that is what I would say cool level. Our target
is Ulrich Spiedel storm conditions measured over the Gabriella cyclone with
Starlink.

https://x.com/sksauli/status/1964349734304301268

We have also now test running just accelerating all data, so we can get
same effects for better utilization rate of the link.

Anyone know what kind of bit error rates or packet loss levels are in the
streams for SpaceX launches? Usually they look very very stable.

Anyone want to test this? Send me email sauli.kiviranta@xrtc.io

Best regards,
Sauli

[Starlink] Re: Testing 4K live video over Starlink with added +10% packet loss

[J Pan]

fast.com measures tcp performance and you used udp to get the best out
of a lossy link? spacex uses multiple starlink dishes on a launch
vehicle and pick whatever made through too
--
J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan

On Tue, Sep 9, 2025 at 1:50 PM Sauli Kiviranta via Starlink
<starlink@lists.bufferbloat.net> wrote:
>
> We start to get somewhere that is what I would say cool level. Our target
> is Ulrich Spiedel storm conditions measured over the Gabriella cyclone with
> Starlink.
>
> https://x.com/sksauli/status/1964349734304301268
>
> We have also now test running just accelerating all data, so we can get
> same effects for better utilization rate of the link.
>
> Anyone know what kind of bit error rates or packet loss levels are in the
> streams for SpaceX launches? Usually they look very very stable.
>
> Anyone want to test this? Send me email sauli.kiviranta@xrtc.io
>
> Best regards,
> Sauli
> _______________________________________________
> Starlink mailing list -- starlink@lists.bufferbloat.net
> To unsubscribe send an email to starlink-leave@lists.bufferbloat.net

[Starlink] Re: Testing 4K live video over Starlink with added +10% packet loss

[Sauli Kiviranta]

This is all just TCP, that was kind of thew idea. Not yet with FEC though,
working on that, just rusty good old TCP.

Best regards,
Sauli

On Wed, Sep 10, 2025 at 12:02 AM J Pan <Pan@uvic.ca> wrote:

> fast.com measures tcp performance and you used udp to get the best out
> of a lossy link? spacex uses multiple starlink dishes on a launch
> vehicle and pick whatever made through too
> --
> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA,
> Web.UVic.CA/~pan
>
> On Tue, Sep 9, 2025 at 1:50 PM Sauli Kiviranta via Starlink
> <starlink@lists.bufferbloat.net> wrote:
> >
> > We start to get somewhere that is what I would say cool level. Our target
> > is Ulrich Spiedel storm conditions measured over the Gabriella cyclone
> with
> > Starlink.
> >
> > https://x.com/sksauli/status/1964349734304301268
> >
> > We have also now test running just accelerating all data, so we can get
> > same effects for better utilization rate of the link.
> >
> > Anyone know what kind of bit error rates or packet loss levels are in the
> > streams for SpaceX launches? Usually they look very very stable.
> >
> > Anyone want to test this? Send me email sauli.kiviranta@xrtc.io
> >
> > Best regards,
> > Sauli
> > _______________________________________________
> > Starlink mailing list -- starlink@lists.bufferbloat.net
> > To unsubscribe send an email to starlink-leave@lists.bufferbloat.net
>

[Starlink] Re: Testing 4K live video over Starlink with added +10% packet loss

[J Pan]

that's really cool. most tcp cannot handle 10% packet loss. what's
video datarate/latency?
--
J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan

On Tue, Sep 9, 2025 at 2:05 PM Sauli Kiviranta <smksauli@gmail.com> wrote:
>
> This is all just TCP, that was kind of thew idea. Not yet with FEC though, working on that, just rusty good old TCP.
>
> Best regards,
> Sauli
>
> On Wed, Sep 10, 2025 at 12:02 AM J Pan <Pan@uvic.ca> wrote:
>>
>> fast.com measures tcp performance and you used udp to get the best out
>> of a lossy link? spacex uses multiple starlink dishes on a launch
>> vehicle and pick whatever made through too
>> --
>> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan
>>
>> On Tue, Sep 9, 2025 at 1:50 PM Sauli Kiviranta via Starlink
>> <starlink@lists.bufferbloat.net> wrote:
>> >
>> > We start to get somewhere that is what I would say cool level. Our target
>> > is Ulrich Spiedel storm conditions measured over the Gabriella cyclone with
>> > Starlink.
>> >
>> > https://x.com/sksauli/status/1964349734304301268
>> >
>> > We have also now test running just accelerating all data, so we can get
>> > same effects for better utilization rate of the link.
>> >
>> > Anyone know what kind of bit error rates or packet loss levels are in the
>> > streams for SpaceX launches? Usually they look very very stable.
>> >
>> > Anyone want to test this? Send me email sauli.kiviranta@xrtc.io
>> >
>> > Best regards,
>> > Sauli
>> > _______________________________________________
>> > Starlink mailing list -- starlink@lists.bufferbloat.net
>> > To unsubscribe send an email to starlink-leave@lists.bufferbloat.net

[Starlink] Re: Testing 4K live video over Starlink with added +10% packet loss

[Sauli Kiviranta]

You can see the bottom left corner that its pushing about 12Mbps, even when
the Fast.com can only "see" mere 2Mbps (they already cheat a bit), that's
what the RTSP source was configured to push from the Axis camera (
https://www.axis.com/products/axis-v5938 ).

In this test the end to end latency was 2.5sec (P99), pretty nice for a
100ms RTT on such a lossy scenario.

Best regards,
Suali

On Wed, Sep 10, 2025 at 12:13 AM J Pan <Pan@uvic.ca> wrote:

> that's really cool. most tcp cannot handle 10% packet loss. what's
> video datarate/latency?
> --
> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA,
> Web.UVic.CA/~pan
>
> On Tue, Sep 9, 2025 at 2:05 PM Sauli Kiviranta <smksauli@gmail.com> wrote:
> >
> > This is all just TCP, that was kind of thew idea. Not yet with FEC
> though, working on that, just rusty good old TCP.
> >
> > Best regards,
> > Sauli
> >
> > On Wed, Sep 10, 2025 at 12:02 AM J Pan <Pan@uvic.ca> wrote:
> >>
> >> fast.com measures tcp performance and you used udp to get the best out
> >> of a lossy link? spacex uses multiple starlink dishes on a launch
> >> vehicle and pick whatever made through too
> >> --
> >> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA,
> Web.UVic.CA/~pan
> >>
> >> On Tue, Sep 9, 2025 at 1:50 PM Sauli Kiviranta via Starlink
> >> <starlink@lists.bufferbloat.net> wrote:
> >> >
> >> > We start to get somewhere that is what I would say cool level. Our
> target
> >> > is Ulrich Spiedel storm conditions measured over the Gabriella
> cyclone with
> >> > Starlink.
> >> >
> >> > https://x.com/sksauli/status/1964349734304301268
> >> >
> >> > We have also now test running just accelerating all data, so we can
> get
> >> > same effects for better utilization rate of the link.
> >> >
> >> > Anyone know what kind of bit error rates or packet loss levels are in
> the
> >> > streams for SpaceX launches? Usually they look very very stable.
> >> >
> >> > Anyone want to test this? Send me email sauli.kiviranta@xrtc.io
> >> >
> >> > Best regards,
> >> > Sauli
> >> > _______________________________________________
> >> > Starlink mailing list -- starlink@lists.bufferbloat.net
> >> > To unsubscribe send an email to starlink-leave@lists.bufferbloat.net
>

[Starlink] Re: Testing 4K live video over Starlink with added +10% packet loss

[Sauli Kiviranta]

Here is example on just TCP over TCP acceleration:

https://x.com/sksauli/status/1959909737492795423/

Any other test that would be interesting?

Best regards,
Sauli

On Wed, Sep 10, 2025 at 12:13 AM J Pan <Pan@uvic.ca> wrote:

> that's really cool. most tcp cannot handle 10% packet loss. what's
> video datarate/latency?
> --
> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA,
> Web.UVic.CA/~pan
>
> On Tue, Sep 9, 2025 at 2:05 PM Sauli Kiviranta <smksauli@gmail.com> wrote:
> >
> > This is all just TCP, that was kind of thew idea. Not yet with FEC
> though, working on that, just rusty good old TCP.
> >
> > Best regards,
> > Sauli
> >
> > On Wed, Sep 10, 2025 at 12:02 AM J Pan <Pan@uvic.ca> wrote:
> >>
> >> fast.com measures tcp performance and you used udp to get the best out
> >> of a lossy link? spacex uses multiple starlink dishes on a launch
> >> vehicle and pick whatever made through too
> >> --
> >> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA,
> Web.UVic.CA/~pan
> >>
> >> On Tue, Sep 9, 2025 at 1:50 PM Sauli Kiviranta via Starlink
> >> <starlink@lists.bufferbloat.net> wrote:
> >> >
> >> > We start to get somewhere that is what I would say cool level. Our
> target
> >> > is Ulrich Spiedel storm conditions measured over the Gabriella
> cyclone with
> >> > Starlink.
> >> >
> >> > https://x.com/sksauli/status/1964349734304301268
> >> >
> >> > We have also now test running just accelerating all data, so we can
> get
> >> > same effects for better utilization rate of the link.
> >> >
> >> > Anyone know what kind of bit error rates or packet loss levels are in
> the
> >> > streams for SpaceX launches? Usually they look very very stable.
> >> >
> >> > Anyone want to test this? Send me email sauli.kiviranta@xrtc.io
> >> >
> >> > Best regards,
> >> > Sauli
> >> > _______________________________________________
> >> > Starlink mailing list -- starlink@lists.bufferbloat.net
> >> > To unsubscribe send an email to starlink-leave@lists.bufferbloat.net
>

[Starlink] Re: Testing 4K live video over Starlink with added +10% packet loss

[J Pan]

great. i have a student working on related topics and i will get her
in touch with you too
--
J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan

On Wed, Sep 10, 2025 at 1:12 AM Sauli Kiviranta <smksauli@gmail.com> wrote:
>
> Here is example on just TCP over TCP acceleration:
>
> https://x.com/sksauli/status/1959909737492795423/
>
> Any other test that would be interesting?
>
> Best regards,
> Sauli
>
> On Wed, Sep 10, 2025 at 12:13 AM J Pan <Pan@uvic.ca> wrote:
>>
>> that's really cool. most tcp cannot handle 10% packet loss. what's
>> video datarate/latency?
>> --
>> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan
>>
>> On Tue, Sep 9, 2025 at 2:05 PM Sauli Kiviranta <smksauli@gmail.com> wrote:
>> >
>> > This is all just TCP, that was kind of thew idea. Not yet with FEC though, working on that, just rusty good old TCP.
>> >
>> > Best regards,
>> > Sauli
>> >
>> > On Wed, Sep 10, 2025 at 12:02 AM J Pan <Pan@uvic.ca> wrote:
>> >>
>> >> fast.com measures tcp performance and you used udp to get the best out
>> >> of a lossy link? spacex uses multiple starlink dishes on a launch
>> >> vehicle and pick whatever made through too
>> >> --
>> >> J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan
>> >>
>> >> On Tue, Sep 9, 2025 at 1:50 PM Sauli Kiviranta via Starlink
>> >> <starlink@lists.bufferbloat.net> wrote:
>> >> >
>> >> > We start to get somewhere that is what I would say cool level. Our target
>> >> > is Ulrich Spiedel storm conditions measured over the Gabriella cyclone with
>> >> > Starlink.
>> >> >
>> >> > https://x.com/sksauli/status/1964349734304301268
>> >> >
>> >> > We have also now test running just accelerating all data, so we can get
>> >> > same effects for better utilization rate of the link.
>> >> >
>> >> > Anyone know what kind of bit error rates or packet loss levels are in the
>> >> > streams for SpaceX launches? Usually they look very very stable.
>> >> >
>> >> > Anyone want to test this? Send me email sauli.kiviranta@xrtc.io
>> >> >
>> >> > Best regards,
>> >> > Sauli
>> >> > _______________________________________________
>> >> > Starlink mailing list -- starlink@lists.bufferbloat.net
>> >> > To unsubscribe send an email to starlink-leave@lists.bufferbloat.net