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tagerw
deepin
2024-07-12 22:13 deepin 来自Ubuntu的某位用户：
减去视频无声片段，可以先安装ffmpeg，然后运行这段Python代码：
# 使用方法：
# 运行该程序前，用户只需修改下面两个变量即可：
# input_folder_path和output_folder_path。其他不用管。
import os
import subprocess
import shutil
def split_video(input_video_path, segment_length=3600):
video_name = os.path.splitext(os.path.basename(input_video_path))[0]
output_dir = os.path.join(os.path.dirname(input_video_path), video_name + "_segments")
os.makedirs(output_dir, exist_ok=True)
command = [
"ffmpeg",
"-i", input_video_path,
"-c", "copy",
"-map", "0",
"-segment_time", str(segment_length),
"-f", "segment",
"-reset_timestamps", "1",
os.path.join(output_dir, f"{video_name}_%03d" + os.path.splitext(input_video_path)[1])
]
subprocess.run(command, check=True)
return output_dir, [os.path.join(output_dir, f) for f in os.listdir(output_dir) if f.startswith(video_name)]
def merge_videos(segment_paths, output_video_path):
with open('file_list.txt', 'w') as f:
for path in segment_paths:
f.write(f"file '{path}'\n")
command = [
"ffmpeg",
"-f", "concat",
"-safe", "0",
"-i", "file_list.txt",
"-c", "copy",
"-c:v", "h264_nvenc", # 使用 GPU 加速
"-preset", "fast",
output_video_path
]
subprocess.run(command, check=True)
os.remove('file_list.txt') # 清理临时文件
def process_segment(input_video_path, output_video_path):
try:
command = [
"ffmpeg",
"-i", input_video_path,
"-af", "silencedetect=n=-50dB:d=0.1",
"-c:v", "h264_nvenc", # 使用 GPU 加速
"-preset", "fast",
"-f", "null", "-"
]
process = subprocess.Popen(command, stderr=subprocess.PIPE)
output, error = process.communicate()
if process.returncode != 0:
print(f"FFmpeg command failed with return code {process.returncode}")
return
silent_segments = []
for line in error.decode().splitlines():
if "silence_start" in line:
silent_segments.append(float(line.split(": ")[1]))
elif "silence_end" in line:
silent_segments.append(float(line.split("|")[0].split(": ")[1]))
non_silent_segments = []
if silent_segments:
non_silent_segments.append((0, silent_segments[0]))
for i in range(1, len(silent_segments) - 1, 2):
non_silent_segments.append((silent_segments[i], silent_segments[i + 1]))
non_silent_segments.append((silent_segments[-1], None))
filter_file_path = os.path.join(os.getcwd(),
f"{os.path.splitext(os.path.basename(input_video_path))[0]}_ffmpeg_filter.txt")
with open(filter_file_path, 'w') as f:
f.write("select='")
for start, end in non_silent_segments:
if end is None:
f.write(f"gte(t,{start})+")
else:
f.write(f"between(t,{start},{end})+")
f.seek(f.tell() - 1, os.SEEK_SET)
f.truncate()
f.write("',setpts=N/FRAME_RATE/TB;")
f.write("aselect='")
for start, end in non_silent_segments:
if end is None:
f.write(f"gte(t,{start})+")
else:
f.write(f"between(t,{start},{end})+")
f.seek(f.tell() - 1, os.SEEK_SET)
f.truncate()
f.write("',asetpts=N/SR/TB")
ffmpeg_concat_cmd = [
"ffmpeg",
"-i", input_video_path,
"-filter_complex_script", filter_file_path,
"-c:v", "h264_nvenc", # 使用 GPU 加速
"-preset", "fast",
"-c:a", "aac",
"-b:a", "192k",
output_video_path
]
subprocess.run(ffmpeg_concat_cmd, check=True)
print(f"Non-silent segments merged and saved to: {output_video_path}")
except Exception as e:
print(f"Error processing segment {input_video_path}: {str(e)}")
finally:
if os.path.exists(filter_file_path):
os.remove(filter_file_path)
def process_video(input_video_path, output_video_path):
output_dir, segments = split_video(input_video_path) # 这一步解决了视频长度的限制。无论视频长短，都不会出bug。
processed_segments = []
for segment_path in segments:
temp_output_path = segment_path.replace(".mp4", "_processed.mp4")
process_segment(segment_path, temp_output_path) # 处理每个视频段
processed_segments.append(temp_output_path)
merge_videos(processed_segments, output_video_path) # 合并处理过的视频段
shutil.rmtree(output_dir) # 删除临时文件夹，包含所有分割的视频段
print(f"Processed video saved to: {output_video_path}")
# 运行该程序前，用户只需修改下面两个变量即可
input_folder_path = r"your_input_folder_path" # 更换为实际输入文件夹的路径
output_folder_path = r"your_output_folder_path" # 更换为实际输出文件夹的路径
input_video_files = [os.path.join(input_folder_path, file) for file in os.listdir(input_folder_path) if
file.endswith(('.mp4', '.flv', '.avi'))]
for input_video_path in input_video_files:
video_name = os.path.splitext(os.path.basename(input_video_path))[0]
output_video_path = os.path.join(output_folder_path, f"{video_name}_merged.mp4")
process_video(input_video_path, output_video_path)
目前大部分人用麒麟或deepin这种桌面系统，很多是因为单位要求或电脑硬件陈旧用不了win，很多人就是把Linux当win的替代品。大多数人是不可能上升到Debian、archlinux、gentoo的，能用Debian、archlinux、gentoo的人，还是那一小批人。
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Too many bugs in Deepin 23 
世界的尽头是同一批寡头资本家