Image List Analyzer

Source and focused tests establish the behaviors claimed below. Actual rendered layout, representative playback/export performance, output compatibility in external players, and capture evidence remain unclaimed.

Purpose and expected result

The selected frame connects the table's measurements to its metadata, histogram, and optimization status.

Image List Analyzer is a top-level inspection and sequence-export utility for a temporary list of still-image files. It reads file metadata into a sortable table, previews one frame at a time with a metadata report and histogram, can prepare playback proxies, and exports every retained row in the current order to SER, raw AVI, H.264/H.265 MP4, or VP9 WebM.

The current implementation is not a quality-ranking or integration-planning engine. It does not measure star count, FWHM, eccentricity, registration quality, or background noise for a visible score; it has no numeric acceptance threshold, rating, include/exclude flag, group model, or direct Send to Image Integration action. Metadata sorting and manual row removal are the available list-selection operations.

At a glance

Property	Current behavior
Menu path	Process > Utilities > Image List Analyzer
Enabled when	Always. No active image or sequence is required. List-dependent actions enable after at least one file is loaded. Header reading and optimization run in the background, so the window does not freeze.
Inputs	Engine-supported still-image files selected directly or found in a folder. Folder import can filter by metadata frame type and an exact case-insensitive filter name. Native sequence/video files are not Analyzer inputs.
Outputs	None for inspection alone. Export Sequence writes one SER, raw AVI, H.264/H.265 MP4, or VP9 WebM containing every retained row in current table order. Delete From Disk permanently removes one source file.
Recommended image state	Any stills the codecs can decode. Linear acquisition frames are appropriate for metadata/histogram inspection; Autostretch export creates display-rendered output and is not a linear scientific archive.
Preview support	Read-only static sequence preview that demosaics CFA frames for display, normal Image Viewer display tools, metadata summary, histogram, frame navigation, and FPS control. It does not modify source pixels.
Sequence support	Writes a temporary image-list manifest of the files (or their proxies) to play them in the preview, but imports stills only. Export creates SER/AVI/MP4/WebM, not an AfterNight .anseq image-list file.
Mask support	Unsupported. No active image or mask is consumed.
External dependencies	Deployed codecs for inputs; deployed encoder support for H.264, H.265, and VP9 video export. No network or catalog is required.
Persistence	Only Analyzer playback FPS (the window's only setting; Reset returns it to the default) and window state persist. Export separately remembers format, codec, and resolution mode. The file list, ordering, selection, folder filters, cache, summary, histogram, output name, and most export choices do not persist.

Before you start

• Treat the list as temporary. Closing the window stops any import or optimization at once, discards the list, and removes Analyzer playback proxies.
• Keep original files at stable paths. Preview, Open In Editor, Export, and Delete all act on those paths.
• If the list will become a sequence, use compatible geometry, channel layout, and pixel types. Analyzer does not check that the files match before playback or export (the preview's image list is described by the first file), so an incompatibility surfaces only as a preview or export failure.
• Decide whether you need inspection or scientific integration. For integration, keep the original stills and import them into Image Integration or Image Integration Lite; an encoded video export is not an integration handoff.
• Delete From Disk is irreversible and has no recycle-bin or undo path. Back up valuable frames before using it.

Procedure

1. Open Process > Utilities > Image List Analyzer.
2. Select Add Files, or select Add Folder and choose recursion plus optional frame-type/filter metadata filters.
3. File headers are read in the background. When an import does not add every file, the window reports how many it added, passed over (already listed or excluded by the folder filters) and could not read, with the first error; review the notification and log.
4. Click a row to load its preview, full metadata report, and histogram. Use previous/next or the frame selector to move through the ordered list.
5. Click table headers to sort on metadata. There is no quality score: use preview/metadata judgment and Remove Selected for the current row.
6. If Play is disabled with Images Need Optimization, select Optimize For Fast Play, which writes a stretched 8-bit proxy of each file. Files added afterwards have no proxy until you optimize again. Inspect individual frames without optimizing when continuous playback is unnecessary.
7. For full-process integration, add the retained original file paths separately to Image Integration. For a delivery/playback sequence, select Export Sequence, configure the output, and verify the resulting file after export.

Complete parameter and action reference

Preview, measurements, and playback

The tables in this section account for the same ten evidence fields. Later compact tables combine effect with dependencies and trade-off with scope; a control has no persisted-default exception unless its Persistence cell says it is restored.

| UI label/action | Type and unit | Runtime default | Persisted-default exception | Valid values, step, or constraints | Effect of increasing, decreasing, or selecting | Dependencies and enable/visibility rules | Quality, artifact, runtime, memory, or disk trade-off | Scope: preview/apply, channel, mask, still/sequence | Persistence | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Image preview | Static sequence view | Empty | None | One current retained row | Decodes the selected row through a temporary image-list manifest; CFA frames are demosaiced for display by the demosaic setting in preferences. Proxies are shown in Linear mode, without stretching them again; original files are shown in Autostretch mode | Requires a retained row; controls disable during background work as applicable | Display transforms do not modify or rank the source | Display only; current still in temporary sequence; no mask/apply | Generic preview state only; list is Run only | | Image Summary | Read-only HTML report | The image list is empty | None | Current row metadata/filesystem values | Displays image/file, geometry, format, CFA, size, camera/acquisition, and software fields | Built from the header read at import; updates when the row changes | Values can be missing/inaccurate; no quality score | Current still; no mask/apply | Derived | | Histogram | Read-only plot | Empty; clipping info disabled | None | The frame the preview shows | Shows its distribution, counted in the background | Clipping info enables with a nonempty list | Not a quality rank; once optimized, it counts the stretched 8-bit proxy being shown | Current displayed still/channels; no mask/apply | Derived/cache | | Previous / Next / frame selector | Sequence player actions | Disabled/empty | None | Frames 1 through row count | Changes row/frame and synchronizes summary/histogram | Requires a list; table/background state can disable navigation | Navigation decode cost only | Temporary still sequence | Run only | | Play / Stop | Sequence player actions | Play disabled | None | Current ordered list | Plays/stops at FPS and follows rows | Play requires every retained file to have a proxy | Requested FPS may exceed decode/paint throughput | Whole temporary still sequence | Run only | | FPS | Integer frames/second | 1 FPS on first use | Restored from Analyzer process state | 1–60 FPS | Raises/lowers requested playback rate and restarts active timing; the rate is kept when the preview is rebuilt after files are added, removed, sorted, optimized, or cleared | FPS control is visible in Analyzer preview | No interpolation; higher rates increase decode/UI pressure | Whole temporary sequence | Persisted with Analyzer process state; Reset returns it to 1 FPS | | Current Image / Total Images | Read-only integers | 0 / 0 | None | 1-based current row / retained count | Reports table/player position | Derived from list/selection | Diagnostic only | Whole temporary list | Derived |

Import, ordering, selection, and destructive actions

UI label/action	Type and unit	Runtime default	Valid values or constraints	Effect and dependencies	Trade-off and scope	Persistence
Add Files	Multi-file chooser	Last shared Analyzer folder	Engine-supported still-image paths	Reads file headers in the background; ignores paths already in the list	Full pixels load only for preview/optimization. Unreadable sources are skipped; when an import does not add every file, the window reports how many it added, passed over and could not read, with the first error	Chooser folder remembered; list Run only
Add Folder	Directory + options dialog	Last Analyzer folder	One directory	Scans supported still extensions and then imports matching metadata	Recursive scanning can be large; filter choices apply only to this import	Folder remembered; choices not persisted
Include subfolders (recursive)	Checkbox	On	On/off	Controls recursive folder scan	On can include unrelated nested data	One import
Frame Type	Selector	All	All; Light; Dark; Flat; Bias; Dark Flat	Filters the folder results by case-insensitive type text; Bias also accepts Offset, Dark excludes Flat, Flat excludes Dark, Dark Flat needs both	Depends on usable type metadata; a file whose header states no frame type counts as Light	One import
Filter Name	Text	Empty	Exact trimmed text, case-insensitive	Keeps folder results whose metadata filter equals the text	Ha does not partially match Ha 7nm; missing metadata will not match nonempty text	One import
File column	Read-only sortable text	Filename only	Tooltip shows the full input path	Sorts case-sensitively by file name; equal keys use ascending effective date	Filename ordering is not quality ranking	Current order is Run only
Date column	Read-only sortable timestamp	Header creation time, else exposure start, else filesystem modification time	Displayed as yyyy-MM-dd hh:mm:ss.zzz in UTC, whichever source it comes from	Initial nonempty list is sorted ascending by effective date despite the downward header glyph; header clicks toggle direction	Missing/ambiguous metadata can make filesystem time determine order	Current order is Run only
Size column	Read-only width x height	Metadata	Dimensions	Header click does not sort; the implementation returns without changing order	It is not a group or compatibility gate	Derived
Filter column	Read-only sortable text	Metadata or -	Any metadata text	Sorts case-sensitively by the shown text with ascending-date tie-break	No filter groups are created	Current order is Run only
ISO/Gain column	Read-only sortable number/text	Metadata	Metadata accessor result	Sorts by numeric ISO/Gain with ascending-date tie-break	No threshold/group split	Current order is Run only
Offset column	Read-only sortable number/text	Metadata	Metadata accessor result	Sorts numerically with ascending-date tie-break	No compatibility validation	Current order is Run only
Exposure column	Read-only sortable seconds/text	Metadata	Metadata accessor result	Sorts numerically with ascending-date tie-break	No exposure threshold/group split	Current order is Run only
CFA column	Read-only sortable Yes/No	Whether the file is a CFA mosaic	No before Yes	Sorts by mosaic state with ascending-date tie-break	Mixed CFA state is not rejected	Current order is Run only
Depth column	Read-only sortable label	From pixel type (signed and unsigned integers share a label)	8 bit; 16 bit; 32 bit int; 32 bit float; 64 bit float	Sorts by pixel type with ascending-date tie-break	Mixed depth is not rejected before export	Current order is Run only
Header click	Sort action	Date selected, ascending state	File, Date, Filter, ISO/Gain, Offset, Exposure, CFA, Depth; Size is unsortable	Same column toggles direction; a new sortable column starts descending. Sort rebuilds preview order	Export uses this resulting order	Run only
Row selection	Single whole-row selection	First row after initial load	Exactly one primary row	Drives preview and context actions	There is no multi-row rating, checkbox, exclusion flag, or saved selection set	Run only
Remove Selected	Action	Disabled for empty list	Current selected row	Removes the row and its proxy from Analyzer only; source stays on disk	Manual curation; no undo	Run only
Clear All	Action	Disabled for empty list	All rows, no confirmation	Stops preview and any files still being read (none of them is added afterwards), clears table/list/cache/temp proxies	Source files remain. There is no undo	Run only
Open In Editor	Row context action	—	Current row	Opens the original file as a normal AfterNight view	Does not retain Analyzer ordering/group state	New app view
Remove	Row context action	—	Current row	Same as Remove Selected	No source deletion	Run only
Delete From Disk	Confirmed row context action	—	Yes/No	Removes the row, then permanently deletes the original file	Irreversible. The row is removed even if the deletion fails; a failure is reported as Could not delete '...' from the disk.	External filesystem
Reset	Dialog action	Visible	—	Returns the playback FPS, the window's only setting, to its default of 1 FPS	It does not clear the list, reset viewer state, or alter sorting	FPS
Close	Dialog/window action	—	—	Stops any import or optimization in progress and closes at once, without waiting for background work	List/proxies are discarded. Export has its own dialog lifetime	Window state/FPS persist

Playback optimization

UI label/action	Type and unit	Runtime default	Valid values or constraints	Effect and dependencies	Trade-off and scope	Persistence
Optimization status	Read-only status	No Optimization Needed for empty list	No Optimization Needed; Images Need Optimization; Images Already Optimized	Explains whether Play is enabled	Status means cache preparation completed, not that a requested FPS was benchmarked	Run/cache
Optimize For Fast Play	Background action	Disabled for empty/already cached list	All retained rows without a proxy	In the background, reads each file as the viewer reads it (a CFA mosaic demosaiced by the one demosaic setting in preferences), stretches it with the preview's current automatic-stretch settings, and writes it as a full-resolution 8-bit temporary FITS playback proxy with a source-path hash in its filename	Can consume CPU, RAM, and temporary disk. Despite the tooltip's “thumbnails” wording, the implementation does not resize these proxies; hash suffixes prevent equal stems from different folders overwriting one another	Temporary; removed with its row, on clear, and on close
Optimization Cancel	Progress action	—	Cooperative	Stops remaining work. Any failure or cancellation leaves the list not fully optimized and Play disabled; failures (not a cancellation) are reported as Image optimization incomplete	Successfully cached rows remain reusable in the current window	Run/cache

Every file receives a proxy, FITS files included. Removing a file removes its proxy, and files added after optimizing have no proxy until you optimize again. The preview plays the proxies without stretching them again. Export never uses optimization proxies.

Export Sequence

Export Sequence is enabled for any nonempty list while no optimization runs, and always exports every retained row in current table order. It writes a fresh temporary image list of the original source paths, specifically excluding optimization proxies. It does not export only the selected row and does not create an .anseq image list.

UI label/action	Type and unit	Runtime default	Valid values or constraints	Effect and dependencies	Trade-off and scope	Persistence
Output Format	Selector	SER on first use; last saved later	SER; AVI (RAW); MP4	Selects SER, uncompressed raw AVI, or encoded video	SER stores 8-bit frames (signed or unsigned) as unsigned 8-bit and every other representation as unsigned 16-bit; AVI is unsigned 8-bit and large; encoded video is unsigned 8-bit lossy delivery output. Only grey/mosaic and RGB frames can be written	Saved in __EXPORT_SEQUENCE__ on dialog close
Codec	Selector	h264 on first use; last saved later	h264; h265; WEBM	Enabled only for MP4; WEBM (VP9) changes normalized suffix to .webm	H.264/H.265/VP9 are lossy and need deployed encoders	Saved
Output File Name / ...	Read-only path + chooser	Empty	Normalized .ser, .avi, .mp4, or .webm path	Required; OK stays disabled until selected	The file is published only when the export completes; no backup or readback is made	Directory remembered separately; filename not saved
FPS	Decimal frames/second	The playback rate the Analyzer's player shows when Export Sequence is selected (1 after Reset)	1.0–60.0, step 0.3	Writes playback timing without interpolating frames	No frame interpolation	Not saved by Export; Analyzer FPS persists
Autostretch	Checkbox	Off	On/off	Applies current preview autostretch parameters per decoded frame; may also apply current saturation/brightness/contrast parameters	Permanently changes exported samples and is display-oriented; sources remain unchanged	Not saved
Debayer CFA	Checkbox	Off	On/off; visible/enabled only when the first listed file is a CFA mosaic	Demosaics each mosaic frame by the demosaic setting in preferences	Changes channel layout/pixels and is irreversible in the output	Not saved
Resize	Checkable group	Off	On/off	Enables user-selected geometry conversion. Off keeps source dimensions, but MP4/WebM crop an odd width or height to the even size below	Adds Lanczos4 resampling and temporary work; the even-size crop applies independently of this checkbox	Not saved
Resolution	Selector	Preserve Ratio on first use; last saved later	Preserve Ratio; Free Ratio; Full HD; 4K; 8K	Preserve Ratio couples width/height; Free Ratio uncouples; fixed presets request 1920×1080, 3840×2160, or 7680×4320	Choosing Preserve or Free Ratio returns width/height to the first frame's size	Saved
Width / Height	Integer pixels	First-frame source dimensions	Width 4 through the larger of 2× source width and 7680; height 4 through the larger of 2× source height and 4320	Editable for Preserve/Free; fixed presets disable editing	Free Ratio can distort geometry. Video export crops an odd width or height to even, keeping the top-left part, even when Resize is off	Not saved
Fill mode	Selector	Fit	Fit; Fill; Stretch; Center	Enabled for fixed presets; maps source into target canvas	Fit can letterbox, Fill can crop, Stretch distorts, Center can crop/pad	Not saved
OK	Export action	Disabled until path exists	Current complete request	Snapshots source sequence, autostretch settings, and request, then exports on a worker with progress	Dialog controls lock during export	Output artifact
Reset	Dialog action	—	—	Restores source width/height, Preserve Ratio, and disables Resize	Does not reset format, codec, FPS, Autostretch, Debayer, path, or all persisted choices	Dialog only
Cancel	Dialog/progress action	—	—	Before start closes without output. During export, the progress dialog's Cancel stops it; closing the dialog stops it and the dialog closes once the export ends	A stopped or failed export leaves no file	None

See Saving and Exporting for the shared encoder, metadata, overwrite, and verification contract.

Measurements, ranking, grouping, and integration handoff

These boundaries are important because the current process name can suggest more than it implements.

Capability	Implemented behavior
Measurements	File/metadata report, table metadata, and the display histogram of the frame shown. There are no visible mean/median/MAD numeric fields in this window.
Ranking	Sorting by filename/date/filter/ISO-or-Gain/offset/exposure/CFA/pixel type. There is no composite quality score, star count, FWHM, eccentricity, noise score, percentile rank, or best-frame percentage.
Selection	Exactly one selected table row plus manual Remove/Clear. Export uses all remaining rows, not the current selection. There are no accept/reject flags, ratings, threshold sliders, or multi-select quality cuts.
Grouping	No persistent or visual groups. Add Folder filters one import by frame-type text and exact filter name; table sorting does not create groups.
Thresholds	None for science/quality selection. A file whose header cannot be read is skipped at import.
Integration handoff	None. Analyzer does not transfer its list/order/removals to Image Integration and Image Integration does not accept the exported sequence. Re-add the retained original still paths to the target integration process.

How the algorithm works

flowchart TB
    accTitle: Image List Analyzer data flow
    accDescr: Scan stills, load metadata, sort and inspect them, then curate the list for optional playback optimization or export.
    Scan[Choose stills or folder] --> Metadata[Read and filter metadata]
    Metadata --> Order[Sort temporary list]
    Order --> Inspect[Preview and histogram]
    Inspect --> Curate[Remove rows]
    Curate -->|Playback| Optimize[Optional cache]
    Curate -->|Export| Export[Decode originals<br/>in visible order]

1. Add Files supplies chosen paths. Add Folder scans supported extensions, optionally recursively, then filters decoded metadata by frame-type text and exact filter name.
2. Paths already listed are passed over. A worker reads each remaining file's header through the engine and skips a path that is not a file or whose header cannot be read. When the import does not add every file, the window reports how many it added, passed over and could not read, with the first error.
3. The table and the preview share one ordered list. Sorting reorders that list, rewrites the preview's image-list manifest, and therefore changes playback and export order.
4. Selecting a row asynchronously decodes its frame. The summary updates at once from the header; the histogram is counted, in the background, once the frame is shown.
5. Optimization runs in the background over rows without a proxy. It reads each file as the viewer reads it, demosaicing a CFA mosaic by the one demosaic setting in preferences, stretches it with the viewer's automatic stretch, and writes a full-resolution 8-bit FITS proxy of every file. Proxy filenames combine the source stem with the first sixteen hex digits of a SHA-256 hash of the source path, so equal stems from different folders remain distinct. Individual failures are logged and prevent the global optimized state.
6. Export writes another image list of the original paths, snapshots the request, optionally debayers, autostretches, and/or resizes each decoded frame, and appends every frame to the selected writer. The file is published only when every frame is written; a stopped or failed export leaves no file.

No ranking equation or grouping estimator exists in this process. Histogram/statistics support display and playback optimization; they are not converted into a selection score.

Parameter interactions and starting points

• Import without folder filters when metadata quality is uncertain, then sort and inspect the table. A restrictive filter can silently exclude valid files with missing/misspelled headers.
• Sort by Date to reconstruct acquisition order, but verify whether each row uses metadata time or filesystem modification fallback.
• Remove only obvious unwanted rows. For objective star/registration quality, use Image Integration's Registration diagnostics rather than treating metadata order as quality.
• Optimize only when continuous playback matters. Single-row inspection can decode on demand without generating proxies.
• Keep Autostretch, Debayer, and Resize off for a control export. Enable one transformation at a time and retain the original stills.
• Use SER for a native sequence handoff when compatible; use raw AVI for uncompressed 8-bit delivery; use MP4/WebM when size/player compatibility matters more than astronomy metadata and exact samples.

Inputs, outputs, and metadata

The Analyzer model stores original paths and loaded metadata only. It does not rewrite headers, attach ratings, write a sidecar list, or save its table state. Summary values are metadata/filesystem observations; missing values appear blank, -, or use the documented fallback.

Optimization outputs live in the window's unique temporary ImageListAnalyzer_<UUID> directory. They are playback-only, full-resolution, stretched 8-bit FITS proxies of every file; each filename includes a source-path hash to avoid collisions between identical stems. They are removed with their row, by Clear All, or by temporary-directory destruction, are not added to recent files, and are not used by Export.

Export output contains all retained frames in visible order:

• SER stores 8-bit frames as unsigned 8-bit and every other representation as unsigned 16-bit, with the FPS; it does not preserve AfterNight Image History;
• raw AVI converts to unsigned 8-bit frames;
• H.264/H.265 MP4 and VP9 WebM are lossy delivery formats without astronomy metadata/history; and
• optional Autostretch, Debayer, and Resize alter output pixels/geometry only, never sources; MP4/WebM also crop an odd width or height to even when Resize is off.

Analyzer has no direct integration output. To carry a curated set into integration, reselect the retained original files in Image Integration; ordering is generally not an integration grouping contract.

Performance

• Metadata import scales with file count and storage latency and runs in the background. Folder scanning itself enumerates the directory tree before metadata filtering.
• Preview loads one full frame on demand. Large camera RAW/FITS frames or network storage can make navigation lag.
• Optimization decodes, demosaics, and stretches the files one at a time in the background. Proxy writes add temporary disk; proxies are not resized thumbnails.
• Playback speed depends on decode/proxy speed, display conversion, and UI throughput. The 1–60 FPS control is a requested rate, not a benchmark result.
• Export scales with retained frames, decoded pixels, transforms, and encoder. Autostretch measures every frame; resize adds resampling; raw AVI can be very large; H.264/H.265/VP9 trade CPU for size.

Worked example

Source-and-test-derived; not an approved-data execution. Consider a folder containing Light and Dark stills across L and Ha filters plus one zero-byte file and one truncated FITS file. Add Folder with recursion on, Frame Type Light, and Filter Name Ha. The source contract admits only supported files whose metadata type contains Light and whose filter equals Ha case-insensitively; the zero-byte and truncated files are skipped as unreadable and counted in the import notification. The first completed import is sorted by effective Date. Select rows to inspect metadata/histograms, manually remove an unwanted row, and sort by Exposure if desired. Export then processes every remaining original path in that order—not only the current row and not an optimized proxy.

For real data, verify the export's frame count, first/last frame, geometry, channel/CFA interpretation, pixel depth, FPS, and playback in AfterNight. No quality ranking, visual improvement, or encoding performance is asserted by this example.

Warnings and limitations

• The current tool is metadata inspection plus manual curation, not lucky-imaging quality selection.
• Nothing checks that the files share dimensions, channels, or depth before playback or export.
• Size displays but cannot be sorted. Arrow glyph direction and initial ascending Date state can be counterintuitive.
• Folder type/filter controls filter one import; they do not form persistent groups.
• Selection is single-row, and Export always uses all retained rows.
• Optimize status does not prove smooth playback at the selected FPS. Proxies remain full resolution.
• Export offers no .anseq Image List destination and no direct integration handoff.
• Delete From Disk removes the row before attempting file deletion; a failed deletion is reported but the row stays removed.
• Reset only returns the playback FPS to its default.

Troubleshooting

Symptom	Source-backed cause	Action
Expected folder files are absent	Unsupported extension, recursion off, type/filter metadata mismatch, duplicate path, missing/empty/truncated/unreadable file	Retry without filters, inspect headers/extensions, and read the Some files were skipped or Some files were passed over notification and the log
A Light filter excluded a valid frame	Unknown/mislabeled frame type did not match the requested metadata text	Import with Frame Type All and inspect the row; Analyzer cannot edit metadata
Date order looks wrong	Some rows use header time while missing values fall back to filesystem modification time, which may not be when the frame was taken (both are shown and ordered in UTC)	Inspect Image Summary and sort/use filenames as a secondary manual check
Clicking Size does nothing	Size sorting is explicitly unimplemented	Sort another column or inspect dimensions manually
Play is disabled	At least one retained row has no proxy, for example a file added after optimizing	Select Optimize; if it remains disabled, inspect the incomplete-optimization error/log and remove/fix failing rows
Preview differs before/after optimization	Playback switches to the stretched 8-bit temporary FITS proxies, demosaiced by the demosaic setting in preferences	Judge scientific pixels in the original file opened in the editor; proxies are display-only
No visible quality score or threshold	Current Analyzer does not implement those features	Use Image Integration registration/quality diagnostics or a dedicated quality-analysis workflow
Export contains rows you did not intend	Export uses every retained row, not selection	Remove unwanted rows before opening Export and confirm Total Images
Export changes brightness/color/geometry	Autostretch, Debayer CFA, or Resize was enabled; MP4/WebM also crop an odd width or height to even with Resize off	Repeat with transformations off, choose codec-compatible dimensions, and verify the source/export settings
Export fails on mixed frames	Analyzer did not enforce matching dimensions/channel/depth before writer creation	Curate a compatible list or normalize files through an appropriate conversion workflow
Need to integrate the curated list	There is no direct handoff and Image Integration accepts stills, not Analyzer video export	Add the retained original still files to Image Integration/Lite
Could not delete '...' from the disk.	Filesystem deletion failed after the row was removed	Check the original path in the filesystem and delete with an appropriate file tool if intended

Related workflow steps

• Continue still-frame calibration/registration/stacking with Image Integration or Image Integration Lite, re-adding original paths.
• Use Image Statistics and Histogram Analysis for explicit numeric inspection of an opened image.
• Read Sequences for player and container behavior.
• Read Saving and Exporting for the shared Export dialog and output verification.
• Use Extract Sequence to turn a source sequence into still frames.
• Check File Formats before choosing a scientific or delivery container.

References and provenance

• Current Analyzer behavior is defined by ImageListAnalyzerProcess, ImageListProcessHelpers, WorkflowToolFiles, the generic TableWidget, and the engine's image-list manifest and frame source at the revision recorded above.
• Shared preview/player and export behavior comes from ImageViewControl, SequencePlayerControl, and ExportSequenceControl; Saving and Exporting records their broader source/test contract.
• No external quality-ranking method or paper applies because the current Analyzer implements no quality score.