{ "api_version": "1", "kind": "dse_post", "self": "https://update.dsesecurity.com/api/v1/posts/tune-axis-night-to-day-dwell-for-temporary-headlights/", "item": { "id": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/", "slug": "tune-axis-night-to-day-dwell-for-temporary-headlights", "url": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/", "alternate_urls": { "markdown": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights.md", "json": "https://update.dsesecurity.com/api/v1/posts/tune-axis-night-to-day-dwell-for-temporary-headlights/" }, "title": "Tune Axis night-to-day dwell for temporary headlights", "summary": "Axis DayNight documentation describes how temporary headlights can trigger an unwanted night-to-day switch. Tune and test dwell behavior for the actual illumination pattern.", "format": { "slug": "guide", "name": "Guide" }, "priority": { "slug": "advisory", "name": "Advisory" }, "featured": false, "image": { "theme": "physical-security", "label": "Physical security", "alt": "Integrated video surveillance and controlled entry at a modern commercial facility.", "card_url": "https://update.dsesecurity.com/assets/editorial/physical-security-card.webp?v=1.8.20", "hero_url": "https://update.dsesecurity.com/assets/editorial/physical-security-hero.webp?v=1.8.20", "social_url": "https://update.dsesecurity.com/assets/editorial/physical-security-social-v2.jpg?v=1.8.20", "width": 2400, "height": 1350 }, "topics": [ { "slug": "video-surveillance", "name": "Video Surveillance", "url": "https://update.dsesecurity.com/topic/video-surveillance/" } ], "author": { "name": "DSE Security Editorial Team", "url": "https://update.dsesecurity.com/#editorial-team", "type": "Organization" }, "publisher": { "name": "Detection Systems & Engineering", "url": "https://dsesecurity.com/" }, "published_at": "2026-10-29T00:10:22+00:00", "modified_at": "2026-10-29T00:10:34+00:00", "reviewed_on": "2026-10-28", "reading_minutes": 3, "word_count": 524, "potentially_affected": "Axis devices exposing the documented DayNight API interface; confirm support and the installed API/software scope before applying the proposed checks.", "dse_recommendation": "DSE recommends a proposed transition test with both transient and sustained illumination cases.", "primary_source": { "name": "Axis Communications — DayNight API", "url": "https://developer.axis.com/vapix/network-video/daynight-api/", "published_on": null, "authority": "Axis Communications" }, "publishing_principles": "https://update.dsesecurity.com/updates/dse-updates-editorial-methodology/", "usage_info": "https://update.dsesecurity.com/usage/", "copyright_notice": "Copyright © 2026 Detection Systems & Engineering. All rights reserved.", "content_html": "

Bottom line: Set the night-to-day transition around the scene’s lighting behavior, rather than choosing the shortest possible switch for every camera.

\n

Source fact: documented behavior

\n

The DayNight API documentation defines dwell time as the number of seconds before the day/night algorithm makes a switch.

\n

Its highway example explains that temporary headlights lasting longer than the night-to-day dwell can cause a switch to day mode and a return to night mode after the vehicle leaves.

\n

What the source does not establish

\n

Do not transfer a dwell value from the documentation’s example into a different scene without testing. Keep temporary passing light distinct from illumination intended to support a useful daytime view. Confirm the exact camera capabilities and channel settings before changing them. Do not present a stable transition as proof that the resulting recording provides the required investigative detail.

\n

Applicability questions

\n\n

DSE recommendation: controlled next steps

\n

The following steps are DSE recommendations based on the cited source.

\n

DSE recommends a proposed transition test with both transient and sustained illumination cases.

\n
    \n
  1. Document the job of the affected view and the lighting events that matter to it. For a road-facing camera, distinguish passing headlights from a deliberate site-lighting change. Use site-approved representative inputs rather than creating unsafe traffic or glare. Record the current settings and the intended behavior before choosing a trial value.
    2. \n
  2. In a noncritical pilot, observe a short illumination event and a longer illumination event under controlled, safe conditions. Mark the event times independently of the camera’s mode display. Adjust the documented dwell setting only through the supported interface and within the agreed change scope. Change one relevant setting at a time so a reviewer can attribute the observed difference to a known configuration.
    3. \n
  3. Retrieve the recordings around both illumination events. Ask the recording owner to assess whether the transition behavior and usable detail meet the intended task. If the result is unacceptable, preserve the unsuccessful test and return to the last accepted configuration. Consider the scene’s lighting design with the responsible specialist instead of repeatedly changing timing until the live display merely appears calmer.
    4. \n
\n

Verification and evidence

\n

Keep the device and channel identity, software version, before-and-after settings, illumination-case description, event timestamps and retrieved recordings. Record mode transitions and the reviewer’s assessment separately; neither should substitute for the other. Note conditions that could not be represented safely during the pilot.

\n

Repeat the proposed cases after a relevant lighting, camera-position or configuration change. Include an explicit disagreement case in the review: fewer mode changes but insufficient recorded detail should not automatically pass. All scenarios here are proposed DSE inputs and acceptance checks, not measured results or claims about a particular installed camera.

\n

Official references

\n\n

Source review completed October 28, 2026. Recheck the official documentation and the deployed device’s capabilities before changing production settings.

\n", "content_text": "Bottom line: Set the night-to-day transition around the scene’s lighting behavior, rather than choosing the shortest possible switch for every camera.\nSource fact: documented behavior\nThe DayNight API documentation defines dwell time as the number of seconds before the day/night algorithm makes a switch.\nIts highway example explains that temporary headlights lasting longer than the night-to-day dwell can cause a switch to day mode and a return to night mode after the vehicle leaves.\nWhat the source does not establish\nDo not transfer a dwell value from the documentation’s example into a different scene without testing. Keep temporary passing light distinct from illumination intended to support a useful daytime view. Confirm the exact camera capabilities and channel settings before changing them. Do not present a stable transition as proof that the resulting recording provides the required investigative detail.\nApplicability questions\n\nWhich short-lived light sources enter this camera’s view at night?\nShould a passing light cause a mode change, or should the camera remain in its accepted night configuration?\nWhat sustained lighting condition should trigger the intended transition?\nWhich recorded scene and task will the reviewer use to judge the result?\n\nDSE recommendation: controlled next steps\nThe following steps are DSE recommendations based on the cited source.\nDSE recommends a proposed transition test with both transient and sustained illumination cases.\n\nDocument the job of the affected view and the lighting events that matter to it. For a road-facing camera, distinguish passing headlights from a deliberate site-lighting change. Use site-approved representative inputs rather than creating unsafe traffic or glare. Record the current settings and the intended behavior before choosing a trial value.\nIn a noncritical pilot, observe a short illumination event and a longer illumination event under controlled, safe conditions. Mark the event times independently of the camera’s mode display. Adjust the documented dwell setting only through the supported interface and within the agreed change scope. Change one relevant setting at a time so a reviewer can attribute the observed difference to a known configuration.\nRetrieve the recordings around both illumination events. Ask the recording owner to assess whether the transition behavior and usable detail meet the intended task. If the result is unacceptable, preserve the unsuccessful test and return to the last accepted configuration. Consider the scene’s lighting design with the responsible specialist instead of repeatedly changing timing until the live display merely appears calmer.\n\nVerification and evidence\nKeep the device and channel identity, software version, before-and-after settings, illumination-case description, event timestamps and retrieved recordings. Record mode transitions and the reviewer’s assessment separately; neither should substitute for the other. Note conditions that could not be represented safely during the pilot.\nRepeat the proposed cases after a relevant lighting, camera-position or configuration change. Include an explicit disagreement case in the review: fewer mode changes but insufficient recorded detail should not automatically pass. All scenarios here are proposed DSE inputs and acceptance checks, not measured results or claims about a particular installed camera.\nOfficial references\n\nDayNight API — Axis Communications; official VAPIX documentation.\n\nSource review completed October 28, 2026. Recheck the official documentation and the deployed device’s capabilities before changing production settings.", "content_markdown": "Bottom line: Set the night-to-day transition around the scene’s lighting behavior, rather than choosing the shortest possible switch for every camera.\n\n## Source fact: documented behavior\n\nThe [DayNight API](https://developer.axis.com/vapix/network-video/daynight-api/) documentation defines dwell time as the number of seconds before the day/night algorithm makes a switch.\n\nIts highway example explains that temporary headlights lasting longer than the night-to-day dwell can cause a switch to day mode and a return to night mode after the vehicle leaves.\n\n## What the source does not establish\n\nDo not transfer a dwell value from the documentation’s example into a different scene without testing. Keep temporary passing light distinct from illumination intended to support a useful daytime view. Confirm the exact camera capabilities and channel settings before changing them. Do not present a stable transition as proof that the resulting recording provides the required investigative detail.\n\n## Applicability questions\n\n- Which short-lived light sources enter this camera’s view at night?\n\n- Should a passing light cause a mode change, or should the camera remain in its accepted night configuration?\n\n- What sustained lighting condition should trigger the intended transition?\n\n- Which recorded scene and task will the reviewer use to judge the result?\n\n## DSE recommendation: controlled next steps\n\nThe following steps are DSE recommendations based on the cited source.\n\nDSE recommends a proposed transition test with both transient and sustained illumination cases.\n\n- Document the job of the affected view and the lighting events that matter to it. For a road-facing camera, distinguish passing headlights from a deliberate site-lighting change. Use site-approved representative inputs rather than creating unsafe traffic or glare. Record the current settings and the intended behavior before choosing a trial value.\n\n- In a noncritical pilot, observe a short illumination event and a longer illumination event under controlled, safe conditions. Mark the event times independently of the camera’s mode display. Adjust the documented dwell setting only through the supported interface and within the agreed change scope. Change one relevant setting at a time so a reviewer can attribute the observed difference to a known configuration.\n\n- Retrieve the recordings around both illumination events. Ask the recording owner to assess whether the transition behavior and usable detail meet the intended task. If the result is unacceptable, preserve the unsuccessful test and return to the last accepted configuration. Consider the scene’s lighting design with the responsible specialist instead of repeatedly changing timing until the live display merely appears calmer.\n\n## Verification and evidence\n\nKeep the device and channel identity, software version, before-and-after settings, illumination-case description, event timestamps and retrieved recordings. Record mode transitions and the reviewer’s assessment separately; neither should substitute for the other. Note conditions that could not be represented safely during the pilot.\n\nRepeat the proposed cases after a relevant lighting, camera-position or configuration change. Include an explicit disagreement case in the review: fewer mode changes but insufficient recorded detail should not automatically pass. All scenarios here are proposed DSE inputs and acceptance checks, not measured results or claims about a particular installed camera.\n\n## Official references\n\n- [DayNight API](https://developer.axis.com/vapix/network-video/daynight-api/) — Axis Communications; official VAPIX documentation.\n\nSource review completed October 28, 2026. Recheck the official documentation and the deployed device’s capabilities before changing production settings." }, "json_ld": { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://dsesecurity.com/#organization", "name": "Detection Systems & Engineering", "alternateName": "DSE Security", "url": "https://dsesecurity.com/", "logo": { "@type": "ImageObject", "url": "https://update.dsesecurity.com/assets/dse-logo-20260812.png?v=1.8.20" } }, { "@type": "Organization", "@id": "https://update.dsesecurity.com/#editorial-team", "name": "DSE Security Editorial Team", "url": "https://update.dsesecurity.com/", "parentOrganization": { "@id": "https://dsesecurity.com/#organization" } }, { "@type": "WebSite", "@id": "https://update.dsesecurity.com/#website", "name": "DSE Updates", "alternateName": "DSE Security Knowledge Hub", "url": "https://update.dsesecurity.com/", "inLanguage": "en-US", "publisher": { "@id": "https://dsesecurity.com/#organization" }, "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://update.dsesecurity.com/?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@type": "WebPage", "@id": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/", "url": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/", "isPartOf": { "@id": "https://update.dsesecurity.com/#website" }, "lastReviewed": "2026-10-28" }, { "@type": "BreadcrumbList", "@id": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/#breadcrumbs", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "DSE Updates", "item": "https://update.dsesecurity.com/" }, { "@type": "ListItem", "position": 2, "name": "Video Surveillance", "item": "https://update.dsesecurity.com/topic/video-surveillance/" }, { "@type": "ListItem", "position": 3, "name": "Tune Axis night-to-day dwell for temporary headlights", "item": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/" } ] }, { "@type": [ "Article", "TechArticle" ], "@id": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/#article", "identifier": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/", "url": "https://update.dsesecurity.com/updates/tune-axis-night-to-day-dwell-for-temporary-headlights/", "headline": "Tune Axis night-to-day dwell for temporary headlights", "description": "Axis DayNight documentation describes how temporary headlights can trigger an unwanted night-to-day switch.", "abstract": "Axis DayNight documentation describes how temporary headlights can trigger an unwanted night-to-day switch. Tune and test dwell behavior for the actual illumination pattern.", "articleBody": "Bottom line: Set the night-to-day transition around the scene’s lighting behavior, rather than choosing the shortest possible switch for every camera.\nSource fact: documented behavior\nThe DayNight API documentation defines dwell time as the number of seconds before the day/night algorithm makes a switch.\nIts highway example explains that temporary headlights lasting longer than the night-to-day dwell can cause a switch to day mode and a return to night mode after the vehicle leaves.\nWhat the source does not establish\nDo not transfer a dwell value from the documentation’s example into a different scene without testing. Keep temporary passing light distinct from illumination intended to support a useful daytime view. Confirm the exact camera capabilities and channel settings before changing them. Do not present a stable transition as proof that the resulting recording provides the required investigative detail.\nApplicability questions\n\nWhich short-lived light sources enter this camera’s view at night?\nShould a passing light cause a mode change, or should the camera remain in its accepted night configuration?\nWhat sustained lighting condition should trigger the intended transition?\nWhich recorded scene and task will the reviewer use to judge the result?\n\nDSE recommendation: controlled next steps\nThe following steps are DSE recommendations based on the cited source.\nDSE recommends a proposed transition test with both transient and sustained illumination cases.\n\nDocument the job of the affected view and the lighting events that matter to it. For a road-facing camera, distinguish passing headlights from a deliberate site-lighting change. Use site-approved representative inputs rather than creating unsafe traffic or glare. Record the current settings and the intended behavior before choosing a trial value.\nIn a noncritical pilot, observe a short illumination event and a longer illumination event under controlled, safe conditions. Mark the event times independently of the camera’s mode display. Adjust the documented dwell setting only through the supported interface and within the agreed change scope. Change one relevant setting at a time so a reviewer can attribute the observed difference to a known configuration.\nRetrieve the recordings around both illumination events. Ask the recording owner to assess whether the transition behavior and usable detail meet the intended task. If the result is unacceptable, preserve the unsuccessful test and return to the last accepted configuration. Consider the scene’s lighting design with the responsible specialist instead of repeatedly changing timing until the live display merely appears calmer.\n\nVerification and evidence\nKeep the device and channel identity, software version, before-and-after settings, illumination-case description, event timestamps and retrieved recordings. Record mode transitions and the reviewer’s assessment separately; neither should substitute for the other. Note conditions that could not be represented safely during the pilot.\nRepeat the proposed cases after a relevant lighting, camera-position or configuration change. Include an explicit disagreement case in the review: fewer mode changes but insufficient recorded detail should not automatically pass. All scenarios here are proposed DSE inputs and acceptance checks, not measured results or claims about a particular installed camera.\nOfficial references\n\nDayNight API — Axis Communications; official VAPIX documentation.\n\nSource review completed October 28, 2026. 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All rights reserved.", "citation": { "@type": "CreativeWork", "name": "Axis Communications — DayNight API", "url": "https://developer.axis.com/vapix/network-video/daynight-api/" } } ] } }