mirror of
https://github.com/Dvorinka/swingmusic-extended.git
synced 2026-06-03 20:13:02 +00:00
cwilvx
78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
from app.utils.threading import background
|
|
|
|
|
|
import subprocess
|
|
|
|
|
|
@background
|
|
def start_transcoding(
|
|
input_path: str, output_path: str, bitrate: str, container_args: list[str], compression_level: int = 12
|
|
):
|
|
"""
|
|
Starts a background transcoding process for an audio file.
|
|
|
|
This function uses FFmpeg to transcode an audio file from one format to another,
|
|
with specified bitrate and container format. It runs as a background task.
|
|
|
|
Args:
|
|
input_path (str): The path to the input audio file.
|
|
output_path (str): The path where the transcoded file will be saved.
|
|
bitrate (str): The desired bitrate for the output file (e.g., "128k").
|
|
container_args (list[str]): FFmpeg arguments specific to the output container format.
|
|
compression_level (int): Compression level (0-9, default: 6).
|
|
|
|
Returns:
|
|
None
|
|
|
|
Note:
|
|
This function is decorated with @background, which means it runs asynchronously.
|
|
The actual transcoding process is handled by FFmpeg in a subprocess.
|
|
The function will print status messages about the transcoding process.
|
|
"""
|
|
# Base command
|
|
command = [
|
|
"ffmpeg",
|
|
"-i",
|
|
input_path,
|
|
"-map_metadata", "0", # Add this line to copy metadata
|
|
"-b:a",
|
|
bitrate,
|
|
"-vn",
|
|
"-compression_level",
|
|
str(compression_level),
|
|
# REVIEW: Idk what any flag below this point does!
|
|
"-movflags",
|
|
"faststart+frag_keyframe+empty_moov",
|
|
"-write_xing",
|
|
"0",
|
|
"-fflags",
|
|
"+bitexact",
|
|
]
|
|
|
|
# Add format-specific parameters
|
|
command.extend(container_args)
|
|
|
|
# Add output path and overwrite flag
|
|
command.extend([output_path, "-y"])
|
|
|
|
process = subprocess.Popen(
|
|
command, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL
|
|
)
|
|
print(f"Started transcoding process with PID: {process.pid}")
|
|
|
|
try:
|
|
# Wait for the process to complete
|
|
process.wait()
|
|
print(f"Transcoding process (PID: {process.pid}) completed")
|
|
except KeyboardInterrupt:
|
|
print(f"Transcoding interrupted. Terminating process (PID: {process.pid})")
|
|
finally:
|
|
# Ensure the process is terminated
|
|
try:
|
|
process.terminate()
|
|
process.wait(timeout=5) # Wait up to 5 seconds for graceful termination
|
|
except subprocess.TimeoutExpired:
|
|
print(
|
|
f"Process (PID: {process.pid}) did not terminate gracefully. Killing..."
|
|
)
|
|
process.kill() |