v.1.9.47b

Changelog — v1.9.37b → v1.9.47b

All changes between v1.9.37b and v1.9.47b, grouped by release.

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v1.9.38b — Model RAM Caching (WITHDRAWN)

• DiT/VAE RAM caching between runs — when cache_dit / cache_vae was
  enabled with offload set to GPU, models were moved to CPU RAM after each run
  instead of being freed, so subsequent runs skipped re-loading from disk.
• Withdrawn: the RAM-resident models slowed down DiT inference on the next
  run (speed regression). The user reverted to the v1.9.37b backup. None of
  these changes are present in v1.9.39b and later — development continued from
  the v1.9.37b codebase.

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v1.9.39b — GUI-Controlled Pipeline Behavior

• All offload settings are now fully GUI-driven — no hardcoded pipeline
  behavior. The GUI dropdowns for DiT / VAE / tensor offload control the
  pipeline end to end, and their values are forwarded to the CLI correctly:
  • GUI labels changed from None / CPU to GPU / CPU (clearer wording).
  • _build_cli_args() maps the GUI selection to --dit_offload_device,
    --vae_offload_device, and --tensor_offload_device for every run.
  • _parse_offload_device("none") returns None (GPU-resident) in the CLI.
• Frame sync fix — prepend_frames conditioning frames are now correctly
  trimmed from the exported output (postprocess receives
  prepend_frames=args.prepend_frames), so output frame count matches the
  input instead of being offset.
• Single-file runner caching fix — runner_cache is now used for
  single-file processing as well, not only for batch/queue processing.

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v1.9.40b — FFmpeg 9 GPU-Aware Export System

• GPU-aware FFmpeg 9 encoding flags — export encoder selects optimal flags
  per GPU vendor, detected automatically at startup via the device probe and
  passed to build_ffmpeg_command():
  • NVIDIA NVENC: -preset p7 -tune hq -rc vbr -cq N -spatial-aq 1 -temporal-aq 1 -aq-strength 15 -rc-lookahead 32 -b_adapt 1.
    10-bit output uses -pix_fmt p010le.
  • Intel QSV: -preset veryslow -global_quality N -look_ahead 1 -look_ahead_depth 40.
  • AMD AMF: -quality quality -rc cqp -qp_i N -preanalysis 1 -vbaq 1.
  • Software (libx264/libx265): -preset slow -crf N.
• AV1 hardware encoding — av1_nvenc, av1_qsv, av1_amf auto-detected;
  falls back to libsvtav1.
• Quality values tightened for AI-upscaled content — H264/H265 CQ
  24/20/16 (was 28/23/18); AV1 CRF 30/24/20; VP9 CRF 33/27/21 with
  -row-mt 1 -deadline good -cpu-used 3.
• H265 QuickTime compatibility — -tag:v hvc1 added automatically for H265
  in MOV containers.
• Single GPU probe path — the device probe result and the ffmpeg encoder
  cache are both passed into the export builder; the previously disconnected
  dual-probe system (device probe vs ffmpeg -encoders probe) is unified.

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v1.9.41b — System Tray + Interrupted Job Resume

• Minimize to system tray — pressing the window close button (X) hides the
  application to the Windows system tray; processing continues in the
  background. Full quit is available only from the tray icon's right-click
  menu ("Full Quit"), which aborts the active worker, releases threads,
  previews and the tray icon, and exits.
  • Tray icon left-click toggles the main window.
  • A notification is shown when hiding during active processing.
• Interrupted job recovery on startup — jobs stuck in running status
  (after a crash or force-quit) are automatically flipped back to pending
  via recover_stale_running() in job_queue.py. If pending jobs exist, a
  startup dialog offers to resume them:
  • Yes — the jobs are re-enqueued and started; the CLI resumes from
    completed chunks via progress.json + completed_chunks skip logic.
  • No — pending jobs are cleared.
• Chunk resume surfaced to the user — the CLI's chunk progress tracking
  already existed; the GUI now drives resume by re-invoking the same job, and
  the CLI transparently skips completed chunks.

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v1.9.42b — Comparison View Modes + Smooth Progress

• Single / Split / Side-by-Side view buttons fixed — all three comparison
  view modes now work for both video and static-image previews. Mode switching
  (_set_preview_mode()) pauses video playback on switch, and
  _refresh_comparison_view() correctly reloads static frames when the
  comparison payload contains images instead of videos.
• Smooth progress bar — progress no longer jumps in 25% phase steps. The
  phase update formula ((current_phase - 1) + phase_progress) / total * 100
  produces continuous within-phase progress, so the bar advances smoothly
  across VAE encode → DiT → VAE decode → postprocess.

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v1.9.43b – v1.9.45b — Preview Engine Iterations (mpv experiment)

• mpv-based preview experiment — attempted to embed mpv.exe (Topaz Video
  AI style) as the playback engine: --wid window embedding plus named-pipe
  IPC (gui/widgets/mpv_widget.py), to offload decoding from the CPU-bound Qt
  widget.
• Result: reverted. --wid embedding produced a black screen inside the
  GUI's stacked widget, and python-mpv could not load mpv-2.dll (missing
  dependencies; a standalone libmpv build is required). The preview was
  reverted to the native Qt VideoPreviewWidget.
• Interim fixes shipped in these builds:
  • Colors.TEXT_DIM → Colors.TEXT_MUTED (AttributeError at runtime in
    video_preview.py).
  • A preview speed regression introduced during the experiment was reverted
    ("restore the previous speed").

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v1.9.46b — Preview Overlay Layout Fix

• Info overlay / seek bar overlap fixed — the video info text no longer
  collides with the bottom seek bar. Layout is now: frame counter top-left,
  video info (resolution, fps, frame count, zoom level) top-right, seek slider
  in a reserved 32px strip at the bottom.

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v1.9.47b — VideoPreviewWidget Cleanup + Realtime Playback

• Duplicate play bar removed — the widget no longer renders its own
  play/pause button and frame label; the application's external
  PlaybackControls (play/pause, next/prev) is the single control set. The
  widget keeps only the seek slider.
• Realtime playback — paintEvent switched from SmoothTransformation to
  FastTransformation for frame scaling during playback, eliminating preview
  lag/stutter on high-resolution outputs.
• Video info overlay — resolution, fps, frame count and zoom level shown
  at the top-right during playback.
• Frame counter — current/total frame count at the top-left.
• Seek slider — draggable position slider at the bottom with show/hide and
  layout logic (_show_seek_bar() / _hide_seek_bar() /
  _layout_seek_bar()); import list cleaned accordingly.

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Unreleased (source only, not yet built)

• BT.709 color metadata on all FFmpeg outputs — every FFmpeg command now
  tags the output -color_primaries bt709 -color_trc bt709 -colorspace bt709:
  the FFMPEGVideoWriter encoder pipe (covers default and GUI-export
  encoding), the chunk concat (-c:v copy), and the audio mux step. MediaInfo
  now reports BT.709 primaries / transfer / matrix on all outputs.
• PYTORCH_ALLOC_CONF migration — the deprecated PYTORCH_CUDA_ALLOC_CONF
  environment variable was renamed to the unified PYTORCH_ALLOC_CONF
  (inference_cli.py, rocm_compat.py), removing the PyTorch 2.9+ allocator
  deprecation warning from every run.
• force_upcast FutureWarning fixed — the VAE upcast toggle in
  model_loader.py now accesses model.config.force_upcast instead of the
  deprecated direct attribute, silencing the diffusers FutureWarning during
  VAE materialization.