28aafc047f
Thumbnails failed immediately on any clip past ~2 min. The one-pass select
expression joined frames with a flat a+b+c+... chain, which overflows ffmpeg's
recursive expression parser past ~120 terms ("Error while parsing expression").
Join the same terms as a balanced tree (depth O(log N)) instead — identical
selection, still one decode pass, exact per-tile frames preserved.
- generate_thumbnails management command: runs synchronously and streams each
phase to stdout, so jobs are watchable without tailing app logs
- surface ffmpeg's stderr instead of swallowing it in CalledProcessError
- fly: min_machines_running = 1. Background thumbnail jobs outlive the HTTP
request that triggers them, so scale-to-zero let the proxy autostop the VM
mid-job and leave projects stuck "running"
- timeline: replace the two split playhead bars (pinned lanes vs scrolling
tracks) with one full-height overlay, positioned in JS to track horizontal
scroll and sit above the translucent header
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
53 lines
2.5 KiB
Python
53 lines
2.5 KiB
Python
"""Run the thumbnailer synchronously and stream progress to the console.
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python manage.py generate_thumbnails 1 2 # specific projects
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python manage.py generate_thumbnails --all # every project with a clip
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python manage.py generate_thumbnails --failed # only failed/stuck ones
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Unlike the upload path (which spawns a daemon thread and logs), this runs in the
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foreground so you can watch each ffmpeg pass and the final status without tailing
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app logs.
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"""
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from django.core.management.base import BaseCommand, CommandError
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from scenes.models import Project
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from scenes.thumbnails import generate_project_thumbnails
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class Command(BaseCommand):
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help = "Generate thumbnails for projects, streaming progress to stdout."
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def add_arguments(self, parser):
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parser.add_argument("project_ids", nargs="*", type=int,
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help="Project ids to (re)generate.")
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parser.add_argument("--all", action="store_true",
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help="Generate for every project that has a clip.")
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parser.add_argument("--failed", action="store_true",
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help="Generate for projects whose status is failed/running/pending.")
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def handle(self, *args, **opts):
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ids = list(opts["project_ids"])
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if opts["all"]:
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ids += list(Project.objects.exclude(clip="").values_list("pk", flat=True))
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if opts["failed"]:
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ids += list(Project.objects
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.filter(thumbnail_status__in=["failed", "running", "pending"])
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.values_list("pk", flat=True))
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ids = sorted(set(ids))
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if not ids:
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raise CommandError("no projects selected (pass ids, --all, or --failed)")
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for pk in ids:
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self.stdout.write(self.style.MIGRATE_HEADING(f"project {pk}"))
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generate_project_thumbnails(pk, log=lambda msg: self.stdout.write(f" {msg}"))
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# report the resulting state so a sweep ends with a clear summary
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self.stdout.write("")
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for project in Project.objects.filter(pk__in=ids).order_by("pk"):
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line = f"project {project.pk} [{project.thumbnail_status}] {project.name}"
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style = (self.style.SUCCESS if project.thumbnail_status == "ready"
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else self.style.ERROR if project.thumbnail_status == "failed"
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else self.style.WARNING)
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self.stdout.write(style(line))
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if project.thumbnail_error:
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self.stdout.write(f" error: {project.thumbnail_error[:500]}")
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