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2023, 12/08 17:34 (197day) Posted | 2023, 12/08 17:36 (197day) Updated
Added a function that automatically ends the broadcast when the user falls asleep if there is no mouse movement or speech for over an hour.

You can use it by turning on Coffret's "Details" > "Automatic end of broadcast when falling asleep".

Distribution will be automatically terminated when the following conditions are met.

・Mouse has not moved for more than 1 hour ・No speech has been made for more than 30 minutes (Coffret's "Tools" > "Voice Recognition Subtitles" is turned on)
・No comments for more than 10 minutes (regardless of broadcaster or viewer)

A warning will be displayed in the comment field 10 minutes before the specified time, and if 10 minutes pass without any of the above actions, the broadcast will automatically end.

Automatic termination using this function will not be penalized for neglected distribution.
Additionally, when this function is enabled, the function to report unattended broadcasts will be disabled.

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2023, 12/05 12:27 (200day) Posted | 2023, 12/06 06:25 (199day) Updated
Added "sub-owner rights" that cover the gap between owner rights and temporary owner rights.

Unlike temporary ownership, this is a permanent ownership privilege, but like temporary ownership, it can be granted/revoked from within the room.
Unlike owner privileges, it is not necessary to share passwords, and this privilege does not allow destructive operations such as changing passwords or closing rooms.

This is useful if you want someone to manage your room while you're not there, but it's troublesome to designate them as the temporary owner every time.However, you're afraid to give out the owner password.

Owners can assign/remove sub-ownership in the following ways.

・Granted/revoked from the list of participants in the room ・Revoked from the "Sub-owner list" on the admission page

Sub-owners cannot perform the following operations compared to owners.

× Closing the room × Changing the entry password or owner password × Login with the owner password × Changing the room title × Changing the authentication function upon entry, custom URL, and release of owner privileges

If you are an owner (room creator) who has already given out the owner password and would like to switch to the sub-owner function, please follow the steps below.

1. Change owner password
2. Remove all owners from the "List of owners" at the bottom of the admission page (only the room creator will be displayed)
3. Grant sub-owner privileges within the room

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2023, 12/01 07:21 (204day) Posted

We have released version v0.4.1 of DeliveryTracking for Chrome.

Between devices logged in with the same account (such as a browser's Google ID),
It is now possible to synchronize tracking numbers, etc.

You can enable syncing by turning on Sync Tracking Numbers Across Devices from Options Settings.
The synchronization interval is 1 minute.

DeliveryTracking for Chrome

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2023, 11/30 01:18 (206day) Posted

If you have a Chromium-based browser (Chrome, Edge, etc.),
This is an extension that allows you to automatically reflect the device's IP address in DNS just by installing and turning it on.

DiCE is no longer required for MacOS, Linux, or even Windows, making automatic updates much easier than before.

DDNS Now browser extension

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2023, 11/28 06:33 (207day) Posted | 2023, 11/28 06:34 (207day) Updated
You can now create subdomains for your domain.
If you have "", you can use this feature to create sub-subdomains like "",
You can create sub-sub-subdomains such as "".

In addition to the settings screen, you can also use the HTTP API.

The record types available for subdomains are A/AAAA/TXT/CNAME.
You can create up to 10 subdomains per account.

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2023, 11/27 03:16 (209day) Posted | 2023, 11/28 06:34 (207day) Updated
Compatible with the ACME DNS-01 challenge, which allows domain authentication on DNS when issuing certificates such as Let's Encrypt.
It can be used in the following way.

- Manually configure from the subdomain on the settings screen

・Set from &acme= parameter with HTTP API

- Required if you want to automatically obtain a wildcard certificate from certbot using a script that uses API.
Please see below for detailed instructions.

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2023, 11/17 01:18 (219day) Posted | 2023, 11/23 18:21 (212day) Updated
We have released version 3.4.0 of the distribution app "kukuluLIVE Encoder 2 (iOS version)".

・Now supports H265/HEVC distribution. (Camera distribution)
If your device is on iOS17 or later, use HEVC.

- The optimal resolution is now automatically selected depending on the performance of the device. (Camera distribution)
For iOS17 and later, the maximum is 720p30.

- Supports image stabilization (camera distribution)
Press the car icon to enable it. The correction is as effective as an action camera, but there is a delay of 1 to 2 seconds due to the correction process.

- In the case of portrait delivery, the area around the center has been enlarged without leaving any margins on the left and right sides. (Camera distribution)

・Improved the stability of screen streaming.

-Removed from the UI due to the abolition of the non-recording distribution frame.
Recording can be disabled in the broadcast settings.

kukuluLIVE Encoder 2 (iOS version)

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2023, 11/15 19:17 (220day) Posted | 2023, 11/24 21:12 (211day) Updated
We have released version 3.31.1 of the distribution app "kukuluLIVE Encoder 2 (Android version)".

- H.265/HEVC codec can now be used in camera distribution mode.
Models equipped with an H.265/HEVC hardware encoder will automatically distribute using the HEVC codec.

-Added the "Always use the device's microphone" setting.
When turned on, only the reading sound will be played via the Bluetooth headset using the microphone on the smartphone even when a Bluetooth headset is connected.
Due to Android specifications, the sound quality of Bluetooth headsets is significantly degraded, so the sound quality will be better if you use the microphone on the main unit.
Since v3.27.0 (2023/07/9), the Bluetooth microphone was forced to be used, so this setting will return the sound quality to the original. On by default.

- Added image stabilization function.
You can turn it on from the car icon.

-Improved resolution settings in automatic mode.
Resolution is now determined according to device performance.

- Due to the unification of distribution frames, the button for the non-recording distribution frame has been removed.
You can disable recording from the broadcast settings. Please see the notice below for more details.

- The notation and design have been corrected.
・Fixed the bug.

kukuluLIVE Encoder 2 (Android version)

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2023, 11/07 11:35 (228day) Posted | 2023, 11/30 01:36 (206day) Updated
Now supports the "H.265/HEVC" codec, which allows for higher-quality distribution than H.264.
HEVC provides up to twice the image quality compared to H.264 at the same bit rate.

It is said that images with intense movement appear particularly clearly.
Below is a screenshot with a bitrate of 2.5Mbps.

[Streamer switching guide]

If you are using an encoder that supports Enhanced RTMP (OBS v29.1 or later), HEVC distribution is possible by changing the settings.

1. Open the OBS settings screen and change the "Output mode" on the "Output" tab to "Details".
2. Select the one below that includes "HEVC" from "Video encoder".

Which settings are available depends on your environment.
・If using GeForce: NVIDIA NVENC HEVC
・If using Radeon or AMD built-in: H265/HEVC Encoder (AMD Advanced Media Framework)
・For Intel CPU built-in or Intel Arc: QuickSync HEVC
・For Mac: Apple VT HEVC hardware encoder

3. The keyframe interval will be changed to "0" (automatic), so change it back to "1".

[Viewer's guide]

You can watch HEVC distribution in original quality in the following environment.

・Browser: Chromium series (Chrome, Edge, etc.), Safari series ・Device: 6th generation Core processor or later, Pascal or later GeForce, Radeon 2019 or later, iOS/iPad v11 or later, Android v6 or later
*About 10% of all viewers on kukuluLIVE are in an unsupported environment.

In non-compatible environments such as Firefox, the video will be converted to H.264 on the server side and played.
Image quality will decrease and latency will increase. ···but it's okay!

The delivery system has been updated to support HEVC, resulting in lower latency than before.
In ideal conditions (launching OBS from Coffret & super low latency encoding) the delay will be less than 2 seconds.

It is designed to take about 3 seconds even when converting to H.264 or in low image quality mode.
This indicates that even if conversion is included, the delay will be the same as before.

[Frequently asked questions and answers]

Q. Isn't it heavy to distribute using HEVC?
A. Actually, it's not heavy. Both the streaming side and the viewing side use dedicated circuits (called QSV or NVENC), so the load is the same as with H.264. The dedicated circuit is also built into the CPU, so it can be used even in an environment without a smartphone or graphics card.

Q. I can't watch HEVC streaming! It doesn't convert to H264 either. The PC and graphics card are quite old and do not meet the supported environment.
A. We are constantly updating playability information, but if you are unable to play normally for several days, please contact us.

Q. I can't play HEVC even though the environment is supposed to be compatible.
A. Have you turned off your browser's hardware acceleration?

Q. Does this mean that if I distribute using HEVC, I can cut the bit rate in half?
A. That's right. Lower bitrates make it easier to watch on smartphones, etc.

Q. I would like to reduce delays.
A. By starting OBS from Coffret, setting the keyframe to 1 second, tuning to "ultra low latency", and setting multipath mode to "1 pass", the delay will be less than 2 seconds.

Q. Can Firefox not play HEVC?
A.No. HEVC support has been added to Nightly from v120 only on Windows, but it is unclear whether it will be available for general use.

Q. Does push RTMP also support the Chinese method (codecid=12)?
A.No. Only Enhanced RTMP/FLV is supported.

Q. Does it support AV1?
A.No. Only HEVC is supported.

Q. Is there a way to check if HEVC can be played?
A. In the PC version, when you hover over the video, "HEVC" will be displayed in the bottom left corner.
If "H264 (conversion)" is displayed, HEVC cannot be played, so the converted version is being played on the server side.
All low-quality modes are converted to HEVC on the server side, so they are displayed as "HEVC (conversion)".

Q. Can I stream from a smartphone app to HEVC?
A. You can use it by updating the official app to the latest version.

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2023, 10/23 01:21 (244day) Posted | 2023, 10/23 01:24 (244day) Updated

Screen distribution is now possible using only browser functions without using a virtual camera such as OBS.
With this feature, you can also capture the screen on Chromebooks such as GIGA School PC.

In addition to the traditional microphone, audio can also specify the sound being played on the device.
(For Chrome browsers, only when capturing the browser)
Conversely, you can mix the sound playing on your device with the video from your camera.

In addition, we have changed the call function to discontinue SkyWay and connect to our own service.
If the tab remains open, the P2P connection may not work, so
Please refresh the page before attempting to make a call.

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