Video Category - Page 59 of 331 - CNX Software

June 9, 2022June 9, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Bluetooth Auracast broadcast audio is the new name for Bluetooth LE audio sharing

Multi-stream and broadcast audio features part of the Bluetooth LE Audio standard have been given a brand name by the Bluetooth Special Interest Group (SIG). Meet Bluetooth Auracast broadcast audio, or simply Auracast for shorts. As a reminder, Bluetooth Audio LE broadcast enables an audio transmitter, be it a smartphone, laptop, television, or public address system to broadcast audio to an unlimited number of nearby Bluetooth audio receivers that could be speakers, earbuds, or even hearing devices. Auracast broadcast audio will let users invite others to listen to the same music without disturbing others around them, for example, a group of friends could listen to the music in the subway or on a bus through Auracast-enabled earbuds. Auracast will also be useful in public places, where for instance, users could listen to the audio from muted televisions at airports, gymnasiums, or train stations, and public announcements (e.g. gate changes, boarding […]

June 7, 2022April 10, 2025 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

TI Sitara AM623 & AM625 Cortex-A53 SoCs offer low-power AI for HMI and IoT applications

Texas Instruments has just launched the new Sitara AM62 family with AM623 and AM625 single to quad-core Cortex-A53 processors designed to provide IoT gateways and HMI applications with AI processing at low power, in some cases with up to 50% reduction in power consumption. The AM623 processor specifically targets Internet of Things (IoT) applications and gateways that may benefit from object and gesture recognition, while the AM625, equipped with a 3D GPU, should power HMI applications with edge AI and up to two full-HD displays. Sitara AM623 and AM625 processors Sitara AM623/AM625 key features and specifications: CPU – Single, dual, or quad-core Arm Cortex-A53 processor @ up to 1,400 MHz with 512KB L2 shared cache, plus 32KB I+D cache per core Co-processor – 1x Arm Cortex-M4F real-time core at up to 400 MHz with 256KB SRAM with SECDED ECC GPU (AM625 only) – Unnamed 3D GPU with support for OpenGL […]

June 6, 2022June 9, 2022 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

MechArm Pi 270 is a desktop robotic arm powered by a Raspberry Pi 4 SBC

Elephant Robotics MechArm Pi 270 is a six-axis robotic arm with a 270mm working radius, support for up to 250 grams payload, and that runs Debian/Ubuntu + ROS on a Raspberry Pi 4 single board computer. The robotic arm was introduced last year in two separate crowdfunding campaigns on Kickstarter and Indiegogo organized by MechArm, which has now joined Elephant Robotics, and now supports myStudio software to upgrade the software, provide video tutorials on how to use the robot, as well as maintenance and repair information. MechArm Pi 270 key features and specifications: Controller – Raspberry Pi 4 Model B SBC with quad-core Cortex-A72 processor, dual-band WiFi 5 & Bluetooth 5.0 connectivity Display I/F – 2x Micro HDMI output port up to 4Kp60 Supported cameras – Official Raspberry Pi cameras or third-party USB cameras USB – 2x USB 3.0 ports, 2x USB 2.0 ports Robotic arm 270mm working range 6 […]

June 6, 2022June 6, 2022 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

Robot cat girl doll leverages Khadas VIM3 SBC for AI-accelerated object detection/tracking

While Khadas VIM4 board has just been launched, the earlier Khadas VIM3 SBC has the advantage of featuring a 5 TOPS NPU that’s being leveraged by Lilium Robotics for their humanoid robots, notably the Lily Delta V7 robot cat girl doll using the Amlogic A311D board to control motors and provide AI features such as face and object detection and tracking. The Delta V7 is offered as an Android kit running Linux (Android refers to humanoid robot here) with a full motorized body kit, a head with a dual camera and sound system, accessories like a dress, wig, cat ears and tail, and other features that are more geared towards the adult crowd… Content of the Lily Delta V7 full Android kit: Full motorized body kit Motorized arms, legs, and torso with wide movement range Arms can support 0.5 kg payload 100 cm high, weighs about 5 kilograms Inserts: Face, […]

June 1, 2022June 1, 2022 by Jean-Luc Aufranc (CNXSoft) - No Comments

How to use a ToF laser ranging sensor with Arduino and Wisblock

Laser ranging has many applications in production and life, such as ranging, positioning, obstacle avoidance, and so on. Time-of-Flight (ToF) ranging, as a type of laser ranging technology, is often used for real-time object detection in robots, autonomous vehicles, and traffic management because of its accuracy, fast response, and low power consumption. The face detection function of mobile phones also uses this technology. This article will introduce the WisBlock RAK12014 ToF laser ranging sensor module, and use the WisBlock development board to demonstrate how the module works. What is a ToF laser ranging sensor module? A ToF laser ranging sensor module uses laser pulses to measure the distance between itself and a target object. The WisBlock RAK12014 ToF laser ranging sensor module is based on STMicro VL53L0X, the smallest ToF ranging sensor in the world. The WisBlock RAK12014 provides accurate distance measurement and can measure distances up to 2 meters. […]

May 27, 2022 by Jean-Luc Aufranc (CNXSoft) - No Comments

DepthVista USB 3D ToF camera supports close range depth measurement, far-range object detection

DepthVista is a USB Time-of-Flight (ToF) camera designed for precise 3D depth measurement in close range mode (1.2m) and person and/or object detection in far-range mode up to 6 meters away. This ToF camera combines a 3D depth camera capable of 640 x 480 @ 30fps, and an Onsemi AR0234 color global shutter sensor supporting HD and FHD at up to 30fps, plus an 850nm VCSEL (vertical-cavity surface-emitting laser) for safety and the ability to operate in complete darkness. e-con Systems’ DepthVista (See3CAM_TOF_25CUG) specifications: Depth camera 3D camera technology: Time-of-Flight Depth range Near mode – 0.2m to 1.2m Far mode – 1m to 6m Illumination: 850nm pulsed laser (Indoor) Accuracy: Up to 1% depending on environmental conditions Output format: Y16 (raw 12-bit) Resolutions Depth – 640 x 480 @ 30fps IR – 640 x 480 @ 30fps Depth + IR – 640 x 960 @ 30fps FOV – 84.29° (H) […]

May 22, 2022 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

Linux hardware video encoding on Amlogic A311D2 processor

amlogic a311d2 h265 hardware video encoding sample

I’ve spent a bit more time with Ubuntu 22.04 on Khadas VIM4 Amogic A311D2 SBC, and while the performance is generally good features like 3D graphics acceleration and hardware video decoding are missing. But I was pleased to see a Linux hardware video encoding section in the Wiki, as it’s not something we often see supported early on. So I’ve given it a try… First, we need to make a video in NV12 pixel format that’s commonly outputted from cameras. I downloaded a 45-second 1080p H.264 sample video from Linaro, and converted it with ffmpeg:

ffmpeg -i big_buck_bunny_1080p_H264_AAC_25fps_7200K.MP4 -pix_fmt nv12 big_buck_bunny_1080p_H264_AAC_25fps_7200K-nv12.yuv

1	ffmpeg -i big_buck_bunny_1080p_H264_AAC_25fps_7200K.MP4 -pix_fmt nv12 big_buck_bunny_1080p_H264_AAC_25fps_7200K-nv12.yuv

I did this on my laptop. As a raw video, it’s pretty big with 3.3GB of storage used for a 45-second video:

ls -lh
total 3.3G
-rw-rw-r-- 1 jaufranc jaufranc  40M Aug  5  2011 big_buck_bunny_1080p_H264_AAC_25fps_7200K.MP4
-rw-rw-r-- 1 jaufranc jaufranc 3.3G May 21 15:03 big_buck_bunny_1080p_H264_AAC_25fps_7200K-nv12.yuv

ls -lh

total 3.3G

-rw-rw-r-- 1 jaufranc jaufranc 40M Aug 5 2011 big_buck_bunny_1080p_H264_AAC_25fps_7200K.MP4

-rw-rw-r-- 1 jaufranc jaufranc 3.3G May 21 15:03 big_buck_bunny_1080p_H264_AAC_25fps_7200K-nv12.yuv

Now let’s try to encode the video to H.264 on Khadas VIM4 board using aml_enc_test hardware video encoding sample:

khadas@Khadas:~$ time aml_enc_test 1080p.nv12 dump.h264 1920 1080 30 25 6000000 1125 1 0 2 4
src_url is	: 1080p.nv12 ;
out_url is	: dump.h264 ;
width   is	: 1920 ;
height  is	: 1080 ;
gop     is	: 30 ;
frmrate is	: 25 ;
bitrate is	: 6000000 ;
frm_num is	: 1125 ;
fmt     is	: 1 ;
buf_type is	: 0 ;
num_planes is	: 2 ;
codec is	: 4 ;
codec is H264
Set log level to 4
[initEncParams:177] enc_feature_opts is 0x0 , GopPresetis 0x0 

[SetupEncoderOpenParam:513] GopPreset GOP format (2) period 30 LongTermRef 0

[vdi_sys_sync_inst_param:618] [VDI] fail to deliver sync instance param inst_idx=0

[AML_MultiEncInitialize:1378] VPU instance param sync with open param failed

[SetSequenceInfo:979] Required buffer fb_num=3, src_num=1, actual src=3 1920x1080

Encode End!width:1920

real	0m26.074s
user	0m1.832s
sys	0m4.883s

khadas@Khadas:~$ time aml_enc_test 1080p.nv12 dump.h264 1920 1080 30 25 6000000 1125 1 0 2 4

src_url is : 1080p.nv12 ;

out_url is : dump.h264 ;

width is : 1920 ;

height is : 1080 ;

gop is : 30 ;

frmrate is : 25 ;

bitrate is : 6000000 ;

frm_num is : 1125 ;

fmt is : 1 ;

buf_type is : 0 ;

num_planes is : 2 ;

codec is : 4 ;

codec is H264

Set log level to 4

[initEncParams:177] enc_feature_opts is 0x0 , GopPresetis 0x0

[SetupEncoderOpenParam:513] GopPreset GOP format (2) period 30 LongTermRef 0

[vdi_sys_sync_inst_param:618] [VDI] fail to deliver sync instance param inst_idx=0

[AML_MultiEncInitialize:1378] VPU instance param sync with open param failed

[SetSequenceInfo:979] Required buffer fb_num=3, src_num=1, actual src=3 1920x1080

Encode End!width:1920

real 0m26.074s

user 0m1.832s

sys 0m4.883s

The output explains the parameters used. There are some error messages, […]

May 20, 2022January 23, 2023 by Jean-Luc Aufranc (CNXSoft) - 24 Comments

Rockchip RK3588 Pico-ITX board launched with four-node cluster box (Crowdfunding)

The Mixtile Blade 3 Pico-ITX single board computer (SBC) powered by Rockchip RK3588 processor has now launched on Crowd Supply with either 8GB or 16GB RAM, and an optional four-node cluster box with a built-in PCIe switch designed to accommodate four Mixtile Blade 3 boards. The board also comes with up to 128GB of storage, two 2.5GbE interfaces, HDMI 2.1 output, HDMI 2.0 input, USB 3.2 Gen 1 USB Type-C ports, as well as a mini PCIe Gen 2 for expansion and a 30-pin GPIO header for expansion, as well as U.2 edge connector with 12V, PCIe x4 Gen 3 and SATA signals to interface with other Mixtile boards and build clusters. Mixtile Blade 3 specifications: SoC – Rockchip RK3588 octa-core processor with four Arm Cortex-A76 cores @ up to 2.4 GHz, four Arm Cortex-A55 cores, Arm Mali-G610 MP4 quad-core GPU with support for OpenGL ES3.2, OpenCL 2.2, Vulkan1.1, 6 […]