Video Capture on Unisoc devices
Video Capture on Unisoc devices
18-07-2024, 12:13 PM
I have a lovely tablet that was cursed with this Unisoc processor: it cannot capture video through the USB, according to a reddit I found on the internet.
I'm using a generic HDMI to USB capture device. It works explendidly on any phone I test it.
No matter what App I use: any generic app from the store will work.
But not on this tablet
Is there a hack to fix this ? Custom driver ? Hardware limitation ? Who knows more about this ?
20-07-2024, 07:24 PM
(18-07-2024, 12:13 PM)LucasBS I have a lovely tablet that was cursed with this Unisoc processor: it cannot capture video through the USB, according to a reddit I found on the internet.
I'm using a generic HDMI to USB capture device. It works explendidly on any phone I test it.
No matter what App I use: any generic app from the store will work.
But not on this tablet
Is there a hack to fix this ? Custom driver ? Hardware limitation ? Who knows more about this ?
Please explain your use case in clearer detail.
Is it different from what scrcpy or vysor do?
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23-11-2025, 03:37 PM
Forgive the delay: I wasn't warned via e-mail about a response
maxpayne Please explain your use case in clearer detail.
Is it different from what scrcpy or vysor do?
Well
It's completely unrelated to Android remote controlling
Video capture uses the USB and the UVC protocol (present natively on Android), so any capture app can read capture devices
Here's a picture of a generic capture device:
But it appears Unisoc is the only brand that doesn't support it
Is there any easy way to overcome this ?
Import drivers ? Or maybe an app that comes with its own drivers ?
This post was last modified: 23-11-2025, 03:48 PM by LucasBS.
25-11-2025, 10:36 AM
(23-11-2025, 03:37 PM)LucasBS Is there any easy way to overcome this ?
Import drivers ? Or maybe an app that comes with its own drivers ?
What's the chipset?
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26-11-2025, 04:26 PM
Hello
This is what I could find:
Tablet:
CTRONIX kids pad 10
Chipset s9863a1c10
aarch64
Cortex A-55
USB Video capture:
Code:
Device Info
Device Path: /dev/bus/usb/001/010
Device Class: Miscellaneous (0xef)
Vendor ID: 534d
Vendor Name (reported): MACROSILICON
Vendor Name (from DB): DB not present
Product ID: 2109
Product Name (reported): null
Product Name (from DB): DB not present
Interface #0
ID: 0
Name: USB Video
Alternate Setting: 0
Class: Video Device (0xe)
Subclass: Boot (0x1)
Protocol: 0
Endpoint: no endpoints
Interface #1
ID: 1
Name: null
Alternate Setting: 0
Class: Video Device (0xe)
Subclass: Unknown (0x2)
Protocol: 0
Endpoint: no endpoints
Interface #2
ID: 1
Name: null
Alternate Setting: 1
Class: Video Device (0xe)
Subclass: Unknown (0x2)
Protocol: 0
Endpoint: #0
Address : 0x83 (10000011)
Number : 3
Direction : Inbound (0x80)
Type : Isochronous (0x1)
Poll Interval : 1
Max Packet Size: 800
Attributes : 00000101
Interface #3
ID: 1
Name: null
Alternate Setting: 2
Class: Video Device (0xe)
Subclass: Unknown (0x2)
Protocol: 0
Endpoint: #0
Address : 0x83 (10000011)
Number : 3
Direction : Inbound (0x80)
Type : Isochronous (0x1)
Poll Interval : 1
Max Packet Size: 3072
Attributes : 00000101
Interface #4
ID: 1
Name: null
Alternate Setting: 3
Class: Video Device (0xe)
Subclass: Unknown (0x2)
Protocol: 0
Endpoint: #0
Address : 0x83 (10000011)
Number : 3
Direction : Inbound (0x80)
Type : Isochronous (0x1)
Poll Interval : 1
Max Packet Size: 5120
Attributes : 00000101
Interface #5
ID: 2
Name: USB Digital Audio
Alternate Setting: 0
Class: Audio Device (0x1)
Subclass: Boot (0x1)
Protocol: 0
Endpoint: no endpoints
Interface #6
ID: 3
Name: USB Digital Audio
Alternate Setting: 0
Class: Audio Device (0x1)
Subclass: Unknown (0x2)
Protocol: 0
Endpoint: no endpoints
Interface #7
ID: 3
Name: USB Digital Audio
Alternate Setting: 1
Class: Audio Device (0x1)
Subclass: Unknown (0x2)
Protocol: 0
Endpoint: #0
Address : 0x82 (10000010)
Number : 2
Direction : Inbound (0x80)
Type : Isochronous (0x1)
Poll Interval : 4
Max Packet Size: 256
Attributes : 00000101
Interface #8
ID: 4
Name: null
Alternate Setting: 0
Class: Human Interaction Device (0x3)
Subclass: Unknown (0x0)
Protocol: 0
Endpoint: #0
Address : 0x84 (10000100)
Number : 4
Direction : Inbound (0x80)
Type : Interrupt (0x3)
Poll Interval : 16
Max Packet Size: 4
Attributes : 00000011
Configuration #0
ID: 1
Name:
Max Power: 500
Self Powered: false
Remote Wakeup: false This post was last modified: 26-11-2025, 04:29 PM by LucasBS.
27-11-2025, 02:22 PM
(26-11-2025, 04:26 PM)LucasBS Hello
..
You first need to find out what's wrong.
Run an adb logcat to a file just before you connect the HDMI and share the log
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08-01-2026, 03:30 PM
Logcat attached
I plugged the UVC device to the tablet with the UVC "player" open (the most informative player of the many I tested), and this is the message the player provided:
- Preparing USB device
- USB device attached: USB\VID_534D&VID_2109
- UVC built-in Audio input: 2109
- MJPG 1920x1080 - Snapshot capture from video stream
- -4/No such device - UVC Device error
The player took around nine seconds to display all those messages, so I trimmed the logcat only after that time (maybe the actual diagnose ended long before, but I can't understand a thing about this logcat to tell that)
I read something about "permission" on the logcat, but all permissions are granted, including the UVC specific ("streaming") that all UVC apps asks on their first run
This post was last modified: 08-01-2026, 03:32 PM by LucasBS.
Attached Files
21-01-2026, 11:26 AM
(08-01-2026, 03:30 PM)LucasBS ..
I read something about "permission" on the logcat, but all permissions are granted, including the UVC specific ("streaming") that all UVC apps asks on their first run
Yes, there appear to be permission/task kills and incompatible library
1. Do you have any task manager / RAM manager installed?
2. Connect a USB drive via OTG cable and confirm if its detected
This post was last modified: 21-01-2026, 11:30 AM by maxpayne.
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