109 lines
4.4 KiB
Python
109 lines
4.4 KiB
Python
import os
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import subprocess
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from datetime import datetime, timedelta
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from typing import IO
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from config import FFMPEG_EXEC, VIDEO_BITRATE, FFMPEG_USE_NVIDIA_GPU, VIDEO_CLIP_EACH_SEC, VIDEO_CLIP_OVERFLOW_SEC, \
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PROD_ENV, FFMPEG_USE_INTEL_GPU
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def get_video_real_duration(filename):
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ffmpeg_process = subprocess.Popen([
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"ffmpeg", "-hide_banner", "-progress", "-", "-v", "0", "-i", filename, "-c", "copy", "-f", "null", "-"
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], stdout=subprocess.PIPE)
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return handle_ffmpeg_output(ffmpeg_process.stdout)
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def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_filename: str):
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if FFMPEG_USE_NVIDIA_GPU:
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print("[+]Use Nvidia NvEnc Acceleration")
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encode_process = subprocess.Popen([
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FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-v", "0", "-y",
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"-hwaccel", "cuvid", "-i", orig_filename, "-vf",
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",".join("subtitles=%s" % i for i in subtitles) + ",hwupload_cuda",
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"-c:a", "copy", "-c:v", "h264_nvenc",
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"-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
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"-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
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"-qmin", "10", "-qmax", "32", "-crf", "16",
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# "-t", "10",
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new_filename
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], stdout=subprocess.PIPE)
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elif FFMPEG_USE_INTEL_GPU:
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print("[+]Use Intel VAAPI Acceleration")
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encode_process = subprocess.Popen([
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FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-v", "0", "-y",
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"-hwaccel", "vaapi", "-i", orig_filename, "-vf",
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",".join("subtitles=%s" % i for i in subtitles) + ",hwupload",
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"-c:a", "copy", "-c:v", "h264_vaapi",
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"-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
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"-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
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"-qmin", "10", "-qmax", "32", "-crf", "16",
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# "-t", "10",
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new_filename
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], stdout=subprocess.PIPE)
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else:
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print("[+]Use CPU Encode")
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encode_process = subprocess.Popen([
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FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-v", "0", "-y",
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"-i", orig_filename, "-vf",
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",".join("subtitles=%s" % i for i in subtitles),
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"-c:a", "copy", "-c:v", "h264",
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"-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
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"-b:v", VIDEO_BITRATE, "-rc:v", "vbr",
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"-qmin", "10", "-qmax", "32", "-crf", "16",
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# "-t", "10",
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new_filename
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], stdout=subprocess.PIPE)
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handle_ffmpeg_output(encode_process.stdout)
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return encode_process.wait()
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def handle_ffmpeg_output(stderr: IO[bytes]) -> str:
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out_time = "0:0:0.0"
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while True:
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line = stderr.readline()
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if line == b"":
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break
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if line.strip() == b"progress=end":
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# 处理完毕
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break
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if line.startswith(b"out_time="):
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out_time = line.replace(b"out_time=", b"").decode().strip()
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if not PROD_ENV:
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print("CurTime", out_time)
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if line.startswith(b"speed="):
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speed = line.replace(b"speed=", b"").decode().strip()
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if not PROD_ENV:
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print("Speed", speed)
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return out_time
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def duration_str_to_float(duration_str) -> float:
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_duration = datetime.strptime(duration_str, "%H:%M:%S.%f") - datetime(1900, 1, 1)
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return _duration.total_seconds()
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def quick_split_video(file):
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if not os.path.isfile(file):
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raise FileNotFoundError(file)
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file_name = os.path.split(file)[-1]
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_create_dt = os.path.splitext(file_name)[0]
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create_dt = datetime.strptime(_create_dt, "%Y%m%d_%H%M")
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_duration_str = get_video_real_duration(file)
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duration = duration_str_to_float(_duration_str)
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current_sec = 0
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while current_sec < duration:
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current_dt = (create_dt + timedelta(seconds=current_sec)).strftime("%Y%m%d_%H%M_")
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print("CUR_DT", current_dt)
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print("BIAS_T", current_sec)
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split_process = subprocess.Popen([
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"ffmpeg", "-y", "-hide_banner", "-progress", "-", "-v", "0",
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"-ss", str(current_sec),
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"-i", file_name, "-c", "copy", "-f", "mp4",
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"-t", str(VIDEO_CLIP_EACH_SEC + VIDEO_CLIP_OVERFLOW_SEC),
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"{}.mp4".format(current_dt)
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], stdout=subprocess.PIPE)
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handle_ffmpeg_output(split_process.stdout)
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current_sec += VIDEO_CLIP_EACH_SEC
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