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# Copyright (c) 2025 Stephen G. Pope
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import ffmpeg
import requests
from services.file_management import download_file
# Set the default local storage directory
STORAGE_PATH = "/tmp/"
def process_conversion(media_url, job_id, bitrate='128k', webhook_url=None):
"""Convert media to MP3 format with specified bitrate."""
input_filename = download_file(media_url, os.path.join(STORAGE_PATH, f"{job_id}_input"))
output_filename = f"{job_id}.mp3"
output_path = os.path.join(STORAGE_PATH, output_filename)
try:
# Convert media file to MP3 with specified bitrate
(
ffmpeg
.input(input_filename)
.output(output_path, acodec='libmp3lame', audio_bitrate=bitrate)
.overwrite_output()
.run(capture_stdout=True, capture_stderr=True)
)
os.remove(input_filename)
print(f"Conversion successful: {output_path} with bitrate {bitrate}")
# Ensure the output file exists locally before attempting upload
if not os.path.exists(output_path):
raise FileNotFoundError(f"Output file {output_path} does not exist after conversion.")
return output_path
except Exception as e:
print(f"Conversion failed: {str(e)}")
raise
def process_video_combination(media_urls, job_id, webhook_url=None):
"""Combine multiple videos into one."""
input_files = []
output_filename = f"{job_id}.mp4"
output_path = os.path.join(STORAGE_PATH, output_filename)
try:
# Download all media files
for i, media_item in enumerate(media_urls):
url = media_item['video_url']
input_filename = download_file(url, os.path.join(STORAGE_PATH, f"{job_id}_input_{i}"))
input_files.append(input_filename)
# Generate an absolute path concat list file for FFmpeg
concat_file_path = os.path.join(STORAGE_PATH, f"{job_id}_concat_list.txt")
with open(concat_file_path, 'w') as concat_file:
for input_file in input_files:
# Write absolute paths to the concat list
concat_file.write(f"file '{os.path.abspath(input_file)}'\n")
# Use the concat demuxer to concatenate the videos
(
ffmpeg.input(concat_file_path, format='concat', safe=0).
output(output_path, c='copy').
run(overwrite_output=True)
)
# Clean up input files
for f in input_files:
os.remove(f)
os.remove(concat_file_path) # Remove the concat list file after the operation
print(f"Video combination successful: {output_path}")
# Check if the output file exists locally before upload
if not os.path.exists(output_path):
raise FileNotFoundError(f"Output file {output_path} does not exist after combination.")
return output_path
except Exception as e:
print(f"Video combination failed: {str(e)}")
raise
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