264DV surveilance camera stream format, known to anyone?

[LigH]

A user of the german doom9/Gleitz forum posted a sample of a video file recorded from surveilance cameras, which is supposed to contain video and audio. MediaInfo only detects the AVC video. After installing a DirectShow filter, media players can play it with audio. The header contains a magic: "264DV"+0x0+0x0+0x0

Does anyone know such a format?

I'm asking the original poster to link a sample here as well, including the installer of the splitter filter. We are currently assuming that DirectShowSource() should enable him to convert both audio and video via AviSynth...
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P.S.: One of several DLLs with the AX filter contains a copyright related to a HiSilicon (http://en.wikipedia.org/wiki/HiSilicon) company. It appears to produce ARM Cortex based video processors.

[StainlessS]

Security stuff:- http://www.hisilicon.com/products/digital.html

From first on list (Hi3535) (probably not of any great use).

Hi3535 H.264 CODEC Processor

Processor Core
● ARM Cortex A9 dual-core@ max. 1 GHz
32 KB L1 I-cache, 32 KB L1 D-cache
256 KB L2 cache
Memory Control Interface
Video Decoding Protocols
● H.264 baseline/main/high profile L5.0
● MPEG4 SP L0–3/ASP L0–5
● MJPEG/JPEG baseline
Video Encoding Protocols
● H.264 baseline/main/high profile L4.2
● MJPEG/JPEG baseline
Video Encoding/Decoding
● H.264&JPEG encoding and decoding of
multiple streams:
5x1080p@30 fps H.264
decoding+1x1080p@30 fps H.264
encoding +1080p@8 fps JPEG encoding
9x720p@30 fps H.264
decoding+1x1080p@30 fps H.264
encoding+720p@16 fps JPEG encoding
24xD1@30 fps H.264
decoding+1x1080@30 fps H.264
encoding+D1@32 fps JPEG encoding
4x720p@30 fps JPEG decoding
● CBR or VBR, ranging from 16 kbit/s to 40
Mbit/s
● Encoding frame rate ranging from 1 fps to
60 fps
● ROI encoding
● Color-to-gray encoding
Intelligent Video Engine
● Integrated IVE, supporting various intelligent
analysis applications such as motion
detection, boundary security, and video
diagnosis
Video and Graphic Processing
● Dynamic contrast enchantment and
video pre- and post-processing such
as deinterlacing, edge enhancement,
3D denoising, and dynamic contrast
enhancement
● Anti-flicker for output videos and graphics
● 1/8x to 16x video scaling
● 1/2x to 2x graphic scaling
● Four cover regions
● OSD overlaying of eight regions
● Alpha blending of video layers and graphics
layers
Key Specifications
Audio Encoding/Decoding
● Software encoding and decoding complying
with multiple protocolsAudio/Video Interface
Security Engine
● AES, DES, 3DES algorithms
Video Interfaces
● VO interfaces
One HDMI 1.4 HD output interface
One VGA HD output interface
One BT.1120 HD output interface
Same source or difference sources for the
HDMI and VGA interfaces
Same source for the BT.1120 and HDMI
interfaces or BT.1120 and VGA interfaces
Maximum 1920 x 1200@60 fps for the
VGA or HDMI interface
One CVBS SD output interface
hree full-screen GUI graphics layers in
RGB1555 or RGB8888 format, used by two
HD channels and one SD channel
One hardware cursor layer in RGB1555
or RGB8888 format, with the maximum
resolution of 128 x 128
Audio Interfaces
● One integrated audio CODEC, supporting 16-
bit audio inputs and outputs
● Two unidirectional I2S interfaces
One input
One output
● External audio CODEC connected over the
I2S interface, supporting 16- or 24-bit audio
inputs and outputs

[StainlessS]

from here:http://www.aliexpress.com/item/HI3535-32-Channel-H-264-Standalone-NVR-32CH-CCTV-IP-Kamera-Recorder-HDMI-VGA-Output-Free/32305810340.html

say Audio compression, G711A

Wikipedia, G711:- http://en.wikipedia.org/wiki/G.711

[LigH]

Expectably, a proprietary container and a narrow band audio codec. Doubtful any third-party software will support it.