74 lines
2.9 KiB
Python
74 lines
2.9 KiB
Python
import os
|
|
import re
|
|
import subprocess
|
|
from datetime import datetime, timedelta
|
|
from typing import IO
|
|
|
|
from config import FFMPEG_EXEC, VIDEO_BITRATE, FFMPEG_USE_GPU, VIDEO_CLIP_EACH_SEC, VIDEO_CLIP_OVERFLOW_SEC
|
|
|
|
|
|
def get_video_real_duration(filename):
|
|
ffmpeg_process = subprocess.Popen([
|
|
"ffmpeg", "-hide_banner", "-i", filename, "-c", "copy", "-f", "null", "-"
|
|
], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
result = "0:0:0.0"
|
|
for line in ffmpeg_process.stderr.readlines():
|
|
match_result = re.findall("(?<= time=).+?(?= )", line.decode())
|
|
if len(match_result) == 0:
|
|
continue
|
|
result = match_result.pop()
|
|
return result
|
|
|
|
|
|
def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_filename: str):
|
|
encode_process = subprocess.Popen([
|
|
FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-v", "0", "-y",
|
|
"-i", orig_filename, "-vf",
|
|
",".join("subtitles=%s" % i for i in subtitles) + (",hwupload_cuda" if FFMPEG_USE_GPU else ""),
|
|
"-c:a", "copy", "-c:v", "h264_nvenc" if FFMPEG_USE_GPU else "h264", "-f", "mp4",
|
|
"-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
|
|
"-b:v", VIDEO_BITRATE, "-rc:v", "vbr", *(["-tune:v", "hq"] if FFMPEG_USE_GPU else []),
|
|
"-qmin", "10", "-qmax", "32", "-crf", "16",
|
|
# "-t", "10",
|
|
new_filename
|
|
], stdout=subprocess.PIPE)
|
|
handle_ffmpeg_output(encode_process.stdout)
|
|
|
|
|
|
def handle_ffmpeg_output(stderr: IO[bytes]) -> None:
|
|
while True:
|
|
line = stderr.readline()
|
|
if line == b"":
|
|
break
|
|
if line.startswith(b"out_time="):
|
|
cur_time = line.replace(b"out_time=", b"").decode()
|
|
print("CurTime", cur_time.strip())
|
|
if line.startswith(b"speed="):
|
|
speed = line.replace(b"speed=", b"").decode()
|
|
print("Speed", speed.strip())
|
|
|
|
|
|
def quick_split_video(file):
|
|
if not os.path.isfile(file):
|
|
raise FileNotFoundError(file)
|
|
file_name = os.path.split(file)[-1]
|
|
_create_dt = os.path.splitext(file_name)[0]
|
|
create_dt = datetime.strptime(_create_dt, "%Y%m%d_%H%M")
|
|
_duration_str = get_video_real_duration(file)
|
|
_duration = datetime.strptime(_duration_str, "%H:%M:%S.%f") - datetime(1900, 1, 1)
|
|
duration = _duration.total_seconds()
|
|
current_sec = 0
|
|
while current_sec < duration:
|
|
current_dt = (create_dt + timedelta(seconds=current_sec)).strftime("%Y%m%d_%H%M_")
|
|
print("CUR_DT", current_dt)
|
|
print("BIAS_T", current_sec)
|
|
split_process = subprocess.Popen([
|
|
"ffmpeg", "-y", "-hide_banner", "-progress", "-", "-v", "0",
|
|
"-ss", str(current_sec),
|
|
"-i", file_name, "-c", "copy", "-f", "mp4",
|
|
"-t", str(VIDEO_CLIP_EACH_SEC + VIDEO_CLIP_OVERFLOW_SEC),
|
|
"{}.mp4".format(current_dt)
|
|
], stdout=subprocess.PIPE)
|
|
handle_ffmpeg_output(split_process.stdout)
|
|
current_sec += VIDEO_CLIP_EACH_SEC
|