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Releases: nodeus/img2spec_video

Image Spectrumizer v5.2

08 Jun 19:05
@nodeus nodeus
v5.2
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Changelog

5.2 — Export Progress & UX Improvements

New Features

  • Real-time export progress — progress bar now reads out_time= from ffmpeg's -progress file, showing actual encoding progress (works at any loglevel, even error or quiet)
  • Configurable ffmpeg loglevel — dropdown selector in Export panel lets you choose between info, error, warning, verbose, debug to control log verbosity
  • Auto-load conv.isw — if conv.isw exists in the startup directory, it is automatically loaded on launch (useful for --pipe mode workflows)
  • Cleanup temporary files checkbox — toggle to auto-delete temp files (.bat, .isw, .log, _progress.txt) after export completes, enabled by default

Improvements

  • -progress file — ffmpeg now writes machine-readable progress to temp/img2spec_export_progress.txt independently of loglevel
  • Progress fallback — parses both HH:MM:SS.xxxxxx and numeric (seconds) formats from -progress output

5.1 — Export Pipeline Fixes

Bug Fixes

  • Export first-frame freeze — removed -fflags nobuffer from decoder ffmpeg, which caused frames to be output in decode order (instead of presentation order), leading to 150 duplicate/skipped frames (~2.5s) due to H.264 B-frame reordering
  • Export framerate consistency — -framerate now used for rawvideo input in encoder ffmpeg (replaces -r), matching rawvideo demuxer semantics
  • Export decoder output — removed redundant -r and -vsync options from decoder ffmpeg, letting it output at native source framerate without vsync interference

Improvements

  • All first-frame diagnostic code (prev_buf, memcmp, dup_warn) removed from pipe_loop() after issue resolution

5.0 — Video Mode & CLI Optimization

Major Features

  • Video Mode — load, scrub, and export video files (MP4, MOV, AVI, etc. supported by ffmpeg)

    • Timeline slider with frame-by-frame navigation
    • Play/pause with forward/backward skip buttons
    • Real-time preview of all modifiers applied to video frames
    • Export to HEVC (NVENC/AMF) or H.264 (x264) with configurable quality and scale
    • Audio remux from source video after export
    • Default export filename: <input>_spmz.mp4

  • --pipe Mode — process frames via stdin/stdout pipeline

    • img2spec workspace.isw --pipe --width W --height H
    • Reads raw RGB24 frames from stdin, outputs processed RGBA frames to stdout
    • Supports ScalePosModifier (full-resolution source preserved)
    • Frame-accurate pipeline for integration with external tools

  • --batch-stdin Mode — batch process multiple images with different workspaces

    • Reads JSON lines from stdin: {"src":"input.png","workspace":"file.isw","dst":"output.png"}
    • Each line is a self-contained export job
    • Avoids Windows 32K-char command-line limit via streaming input

  • Headless CLI Mode — --headless flag suppresses all GUI output

    • Combined with --batch-stdin for fully automated batch processing
    • Can run on machines without a display

Improvements

  • CLI arguments processed sequentially and independently
  • process_and_save() helper reduces code duplication

4.0 — Previous Release

Original release by Jari Komppa. Image-to-spectrum conversion GUI tool with:

  • ZX Spectrum, ZX 3x64, C64 HiRes, C64 Multicolor device modes
  • Stackable modifiers (quantize, dither, scale, position, etc.)
  • PNG/SCR/H/INC export
  • Real-time interactive preview
  • Workspace save/load
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