docs(wiki): DS-2CD1047G3H-LIU main-stream ISAPI snapshot is a firmware bug — camera line to be replaced
Full live investigation of the persistent 503 "deviceBusy" on main-stream ISAPI snapshots (10.0.10.13): ruled out config (byte-identical to a working sibling model), ruled out firmware age (reproduced on both the original V5.8.11 and current V5.11.0 builds, ~15 months apart), and ruled out real resource contention (a full channel-ID sweep shows every ID fails identically except the one hardcoded working value, including nonexistent channels) — pointing at a broken/incomplete ISAPI snapshot handler that mislabels itself as "busy," not a real encoder ceiling. RTSP main-stream frame-grab was confirmed as a working route around it, but given the bug and the sub-stream's real-world plate-read accuracy problems, the owner decided to replace the DS-2CD1047G3H-LIU units rather than carry an ffmpeg/RTSP dependency to work around vendor firmware. Ingested the vendor datasheet as a source page along the way. Claude-Session: https://claude.ai/code/session_01FWncR69HgGPuei1dLrW3cU
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#### HIKVISION DS-2CD1047G3H-LIU-F 4 MP ColorVu 3.0 Fixed Bullet Network Camera
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#### FEATURE
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- HikAI-ISP for excellent noise reduction effect
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- Super clear 24/7 colorful imaging with ColorVu 3.0 technology
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- Motion Detection 3.0, more accurate on person and vehicle classification
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- Strobe Light & Audio Alarm to deter intruders (optional)
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- Two-Way Audio via camera and Hik-Connect
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- Smart Hybrid Light: integrates IR and white lights, 3 supplemental lighting modes
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- On-board storage with SD card up to 512 GB (optional)
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- Water and dust resistant (IP67)
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#### Specification
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<table><tbody><tr><td colspan="2" width="681">n <strong>Specification</strong></td></tr><tr><td colspan="2" width="681"><strong>Camera</strong></td></tr><tr><td width="194">Max. Resolution</td><td width="487">2560 × 1440</td></tr><tr><td width="194">Min. Illumination</td><td width="487">Color: 0.0001 Lux @ (F1.0, AGC ON)</td></tr><tr><td width="194">Shutter Time</td><td width="487">1 s to 1/100,000 s</td></tr><tr><td width="194">Day & Night</td><td width="487">IR cut filter</td></tr><tr><td width="194">Angle Adjustment</td><td width="487">Pan: 0° to 360°,tilt: 0° to 90°,rotate: 0° to 360°</td></tr><tr><td colspan="2" width="681"><strong>Lens</strong></td></tr><tr><td width="194">Lens Type</td><td width="487">Fixed focal lens, 2.8 and 4 mm optional</td></tr><tr><td width="194">Focal Length & FOV</td><td width="487">2.8 mm, horizontal FOV 104°, vertical FOV 54.4°, diagonal FOV 126.7°<p>4 mm, horizontal FOV 89.3°, vertical FOV 48.2°, diagonal FOV 106.5°</p></td></tr><tr><td width="194">Lens Mount</td><td width="487">M16</td></tr><tr><td width="194">Iris Type</td><td width="487">Fixed</td></tr><tr><td width="194">Aperture</td><td width="487">F1.0</td></tr><tr><td width="194">Depth of Field</td><td width="487">2.8 mm: 2.5 m to ∞<p>4 mm: 2.8 m to ∞</p></td></tr><tr><td colspan="2" width="681"><strong>DORI</strong></td></tr><tr><td width="194">DORI</td><td width="487">2.8 mm, D: 61 m, O: 24 m, R: 12 m, I: 6 m<p>4 mm, D: 68 m, O: 27 m, R: 13 m, I: 6 m</p></td></tr><tr><td colspan="2" width="681"><strong>Illuminator</strong></td></tr><tr><td width="194">Supplement Light Type</td><td width="487">IR,White Light</td></tr><tr><td width="194">Supplement Light Range</td><td width="487">IR: up to 30 m<p>White Light: up to 20 m</p></td></tr><tr><td width="194">Smart Supplement Light</td><td width="487">Yes</td></tr><tr><td width="194">IR Wavelength</td><td width="487">850 nm</td></tr><tr><td colspan="2" width="681"><strong>Video</strong></td></tr><tr><td width="194"><strong> </strong><p><strong> </strong></p><p>Main Stream</p></td><td width="487">50 Hz:<p>25 fps (2560 × 1440, 1920 × 1080, 1280 × 720)</p><p>60 Hz:</p><p>24 fps (2560 × 1440, 1920 × 1080, 1280 × 720)</p></td></tr><tr><td width="194">Sub-Stream</td><td width="487">50 Hz: 25 fps (768 × 432, 640 × 360)<p>60 Hz: 24 fps (768 × 432, 640 × 360)</p></td></tr><tr><td width="194">Video Compression</td><td width="487">Main stream: H.265+/H.265/H.264+/H.264,<p>Sub-stream: H.265/H.264/MJPEG</p></td></tr><tr><td width="194">Video Bit Rate</td><td width="487">32 Kbps to 16 Mbps</td></tr><tr><td width="194">H.264 Type</td><td width="487">Baseline Profile,Main Profile,High Profile</td></tr><tr><td width="194">H.265 Type</td><td width="487">Main Profile</td></tr><tr><td width="194">Bit Rate Control</td><td width="487">CBR,VBR</td></tr><tr><td width="194">Scalable Video Coding (SVC)</td><td width="487">H.264 and H.265 encoding</td></tr><tr><td width="194">Region of Interest (ROI)</td><td width="487">1 fixed region for main stream</td></tr><tr><td colspan="2" width="681"><strong>Audio</strong></td></tr><tr><td width="194">Audio Type</td><td width="487">Mono sound</td></tr><tr><td width="194">Audio Compression</td><td width="487">G.711/G.722.1/G.726/MP2L2/PCM/MP3/AAC-LC</td></tr><tr><td width="194">Audio Bit Rate</td><td width="487">64 Kbps (G.711)/16 Kbps (G.722.1)/16 Kbps (G.726)/32 to 160 Kbps (MP2L2)/16 to 64<p>Kbps (AAC-LC)</p></td></tr><tr><td width="194">Audio Sampling Rate</td><td width="487">8 kHz/16 kHz</td></tr></tbody></table>
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<table><tbody><tr><td width="199">Environment Noise Filtering</td><td width="482">Yes</td></tr><tr><td colspan="2" width="681"><strong>Network</strong></td></tr><tr><td width="199">Protocols</td><td width="482">TCP/IP, ICMP, DHCP, DNS, HTTP, RTP, RTSP, RTCP, NTP, IPv4, IPv6, IGMP, UDP, QoS,<p>FTP, SMTP</p></td></tr><tr><td width="199">Simultaneous Live View</td><td width="482">Up to 6 channels</td></tr><tr><td width="199">API</td><td width="482">ONVIF (Profile S, Profile G),ISAPI,SDK</td></tr><tr><td width="199">User/Host</td><td width="482">Up to 32 users<p>3 user levels: administrator, operator, and user</p></td></tr><tr><td width="199"><strong> </strong><p>Security</p></td><td width="482">Password protection, complicated password, watermark, basic and digest<p>authentication for HTTP, WSSE and digest authentication for Open Network Video</p><p>Interface, security audit log, host authentication (MAC address)</p></td></tr><tr><td width="199">Client</td><td width="482">iVMS-4200,Hik-Connect</td></tr><tr><td width="199">Web Browser</td><td width="482">Plug-in required live view: Chrome 80+, Firefox 80+, Edge 89+, Safari 13+,<p>Plug-in free live view: Chrome 80+, Firefox 80+, Edge 89+</p></td></tr><tr><td colspan="2" width="681"><strong>Image</strong></td></tr><tr><td width="199">Image Settings</td><td width="482">Rotate mode,saturation,brightness,contrast,sharpness,gain,white balance,adjustable<p>by client software or web browser</p></td></tr><tr><td width="199">Day/Night Switch</td><td width="482">Day,Night,Auto,Schedule</td></tr><tr><td width="199">Wide Dynamic Range (WDR)</td><td width="482">120 dB</td></tr><tr><td width="199">SNR</td><td width="482">≥ 52 dB</td></tr><tr><td width="199">Image Enhancement</td><td width="482">BLC,HLC,3D DNR</td></tr><tr><td width="199">Privacy Mask</td><td width="482">4 programmable polygon privacy masks</td></tr><tr><td colspan="2" width="681"><strong>Interface</strong></td></tr><tr><td width="199">Ethernet Interface</td><td width="482">1 RJ45 10 M/100 M self-adaptive Ethernet port</td></tr><tr><td width="199"><strong> </strong><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p>On-Board Storage</p></td><td width="482">DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-SL/SRB/LIUF: Yes<p>-LIU: NA</p></td></tr><tr><td width="199">Built-in Microphone</td><td width="482">Yes,1 built-in microphone</td></tr></tbody></table>
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| Built-in Speaker | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-SL/SRB: Yes \-LIU/LIUF: NA |
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| Audio | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-LIU: NA |
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| Alarm | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-LIU: NA |
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| Reset Key | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-SL/SRB/LIUF: Yes, \-LIU: NA |
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<table><tbody><tr><td colspan="2" width="681"><strong>Event</strong></td></tr><tr><td width="192">Basic Event</td><td width="489">Motion detection (support alarm triggering by specified target types (human and<p>vehicle)),video tampering alarm,exception</p></td></tr><tr><td width="192">Linkage</td><td width="489">Upload to FTP,notify surveillance center,send email,trigger recording,trigger capture</td></tr><tr><td colspan="2" width="681"><strong>General</strong></td></tr><tr><td width="192">Power</td><td width="489">DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-LIU: 12 VDC ± 25%, 0.58 A, max. 7 W, Ø5.5 mm<p>coaxial power plug, reverse polarity protection, PoE: IEEE 802.3af, Class 3,max. 9 W LIUF: 12 VDC ± 25%, 0.67 A, max. 8 W, Ø5.5 mm coaxial power plug, reverse polarity protection, PoE: IEEE 802.3af, Class 3,max. 10 W</p><p>-SL/SRB: 12 VDC ± 25%, 0.84 A, max. 10.1 W, Ø5.5 mm coaxial power plug, reverse polarity protection, PoE: IEEE 802.3af, Class 3,max. 12.1 W</p><p> </p></td></tr><tr><td width="192"><strong> </strong><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p><strong> </strong></p><p>Dimension</p></td><td width="489">DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-LIU: 69.1 mm × 66.9 mm × 172.9 mm (2.7″ × 2.6″ ×<p>6.8″)</p><p>-LIUF/SL/SRB: 69.1 mm × 67.4 mm × 179 mm (2.7″ × 2.7″ × 7.1″)</p><p> </p></td></tr><tr><td width="192">Package Dimension</td><td width="489">210 mm × 116 mm × 106 mm (8.3″ × 4.6″ × 4.2″)</td></tr></tbody></table>
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| Weight | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-LIU: Approx. 310 g (0.7 lb.) \-LIUF: Approx. 315 g (0.7 lb.) \-SL/SRB: Approx. 325 g (0.7 lb.) |
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| With Package Weight | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-LIU: Approx. 465 g (1.0 lb.) \-LIUF: Approx. 470 g (1.0 lb.) \-SL/SRB: Approx. 495 g (1.1 lb.) |
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| Storage Conditions | \-30 °C to 60 °C (-22 °F to 140 °F). Humidity 95% or less (non-condensing) |
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| Startup and Operating Conditions | \-30 °C to 60 °C (-22 °F to 140 °F). Humidity 95% or less (non-condensing) |
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| Language | English, Russian, Ukrainian, Arabic, Spanish, French, Portuguese, Turkish, Polish, German |
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| General Function | Heartbeat,mirror,flash log,password reset via email,password protection,anti -banding |
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| Flashing Light | DS-2CD1047G3H-LIU(F)(/SL)(/SRB):-SL/SRB: Yes \-LIU/LIUF: NA |
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<table><tbody><tr><td colspan="2" width="681"><strong>Approval</strong></td></tr><tr><td width="194">EMC</td><td width="487">CE-EMC: EN 55032:2015+A1:2020, EN 50130-4:2011+A1:2014, EN IEC<p>61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A1:2019+A2:2021</p></td></tr><tr><td width="194">Safety</td><td width="487">CB: IEC 62368-1: 2014+A11,<p>CE-LVD: EN 62368-1: 2014/A11: 2017</p></td></tr><tr><td width="194">Environment</td><td width="487">CE-RoHS: 2011/65/EU,<p>WEEE: 2012/19/EU</p></td></tr><tr><td width="194">Protection</td><td width="487">IP67: IEC 60529-2013</td></tr></tbody></table>
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#### Available Model
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- DS-2CD1047G3H-LIUF/SRB(2.8mm)
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- DS-2CD1047G3H-LIUF/SRB(4mm)
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- DS-2CD1047G3H-LIU(2.8mm)
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- DS-2CD1047G3H-LIU(4mm)
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- DS-2CD1047G3H-LIUF(2.8mm)
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- DS-2CD1047G3H-LIUF(4mm)
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- DS-2CD1047G3H-LIUF/SL(2.8mm)
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- DS-2CD1047G3H-LIUF/SL(4mm)
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