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code outsourced to tasks.py, videos are converted during upload

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Chneemann 2024-08-12 09:21:28 +02:00
parent 19a4de1e2d
commit b91dfc5223
2 changed files with 44 additions and 20 deletions
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28
backend/videoflix/content/signals.py
View file

@ -1,8 +1,7 @@
from .models import Video from .models import Video
from content.tasks import convert_video, create_thumbnail
from django.dispatch import receiver from django.dispatch import receiver
from django.conf import settings
from django.db.models.signals import post_save, post_delete from django.db.models.signals import post_save, post_delete
import ffmpeg
import os import os
@receiver(post_save, sender=Video) @receiver(post_save, sender=Video)
@ -11,24 +10,13 @@ def video_post_save(sender, instance, created, **kwargs):
Generates a thumbnail for a newly created `Video` instance. Generates a thumbnail for a newly created `Video` instance.
""" """
if created: if created:
video_file_path = instance.video_file.path #Convert Video
thumbnail_dir = settings.THUMBNAIL_DIR convert_video(instance.video_file.path, "480")
convert_video(instance.video_file.path, "720")
thumbnail_filename = os.path.splitext(os.path.basename(video_file_path))[0] + '.jpg' convert_video(instance.video_file.path, "1080")
thumbnail_path = os.path.join(thumbnail_dir, thumbnail_filename)
absolute_thumbnail_path = os.path.abspath(thumbnail_path) #Create Thumbnail
create_thumbnail(instance)
if not os.path.exists(thumbnail_dir):
os.makedirs(thumbnail_dir)
try:
ffmpeg.input(video_file_path, ss=1).output(absolute_thumbnail_path, vf='scale=300:-1', vframes=1).run(overwrite_output=True)
instance.thumbnail = os.path.relpath(thumbnail_path, start=settings.MEDIA_ROOT)
instance.save()
print("New video and thumbnail generated")
except ffmpeg._run.Error as e:
print(f"An error occurred: {e.stderr.decode()}")
@receiver(post_delete, sender=Video) @receiver(post_delete, sender=Video)
def auto_delete_file_on_delete(sender, instance, **kwargs): def auto_delete_file_on_delete(sender, instance, **kwargs):

36
backend/videoflix/content/tasks.py Normal file
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@ -0,0 +1,36 @@
import subprocess
import ffmpeg
import os
from django.conf import settings
def convert_video(source, resolution):
target = source + f'_{resolution}p.mp4'
target = remove_first_mp4(target)
ffmpeg_path = '/opt/homebrew/bin/ffmpeg'
cmd = [ffmpeg_path, '-i', source, '-s', f'hd{resolution}', '-c:v', 'libx264', '-crf', '23', '-c:a', 'aac', '-strict', '-2', target]
result = subprocess.run(cmd, capture_output=True, text=True)
def remove_first_mp4(filename):
name_part, ext_part = filename.split('.mp4', 1)
new_filename = name_part + ext_part
return new_filename
def create_thumbnail(source):
video_file_path = source.video_file.path
thumbnail_dir = settings.THUMBNAIL_DIR
thumbnail_filename = os.path.splitext(os.path.basename(video_file_path))[0] + '.jpg'
thumbnail_path = os.path.join(thumbnail_dir, thumbnail_filename)
absolute_thumbnail_path = os.path.abspath(thumbnail_path)
if not os.path.exists(thumbnail_dir):
os.makedirs(thumbnail_dir)
try:
ffmpeg.input(video_file_path, ss=1).output(absolute_thumbnail_path, vf='scale=300:-1', vframes=1).run(overwrite_output=True)
source.thumbnail = os.path.relpath(thumbnail_path, start=settings.MEDIA_ROOT)
source.save()
print("New video and thumbnail generated")
except ffmpeg._run.Error as e:
print(f"An error occurred: {e.stderr.decode()}")