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8ede856 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 | """媒体文件处理工具
提供音视频格式转换、时长获取等功能。
"""
import asyncio
import os
import subprocess
import uuid
from pathlib import Path
from astrbot import logger
from astrbot.core.utils.astrbot_path import get_astrbot_temp_path
async def get_media_duration(file_path: str) -> int | None:
"""使用ffprobe获取媒体文件时长
Args:
file_path: 媒体文件路径
Returns:
时长（毫秒），如果获取失败返回None
"""
try:
# 使用ffprobe获取时长
process = await asyncio.create_subprocess_exec(
"ffprobe",
"-v",
"error",
"-show_entries",
"format=duration",
"-of",
"default=noprint_wrappers=1:nokey=1",
file_path,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
stdout, stderr = await process.communicate()
if process.returncode == 0 and stdout:
duration_seconds = float(stdout.decode().strip())
duration_ms = int(duration_seconds * 1000)
logger.debug(f"[Media Utils] 获取媒体时长: {duration_ms}ms")
return duration_ms
else:
logger.warning(f"[Media Utils] 无法获取媒体文件时长: {file_path}")
return None
except FileNotFoundError:
logger.warning(
"[Media Utils] ffprobe未安装或不在PATH中，无法获取媒体时长。请安装ffmpeg: https://ffmpeg.org/"
)
return None
except Exception as e:
logger.warning(f"[Media Utils] 获取媒体时长时出错: {e}")
return None
async def convert_audio_to_opus(audio_path: str, output_path: str | None = None) -> str:
"""使用ffmpeg将音频转换为opus格式
Args:
audio_path: 原始音频文件路径
output_path: 输出文件路径，如果为None则自动生成
Returns:
转换后的opus文件路径
Raises:
Exception: 转换失败时抛出异常
"""
# 如果已经是opus格式，直接返回
if audio_path.lower().endswith(".opus"):
return audio_path
# 生成输出文件路径
if output_path is None:
temp_dir = get_astrbot_temp_path()
os.makedirs(temp_dir, exist_ok=True)
output_path = os.path.join(temp_dir, f"media_audio_{uuid.uuid4().hex}.opus")
try:
# 使用ffmpeg转换为opus格式
# -y: 覆盖输出文件
# -i: 输入文件
# -acodec libopus: 使用opus编码器
# -ac 1: 单声道
# -ar 16000: 采样率16kHz
process = await asyncio.create_subprocess_exec(
"ffmpeg",
"-y",
"-i",
audio_path,
"-acodec",
"libopus",
"-ac",
"1",
"-ar",
"16000",
output_path,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
stdout, stderr = await process.communicate()
if process.returncode != 0:
# 清理可能已生成但无效的临时文件
if output_path and os.path.exists(output_path):
try:
os.remove(output_path)
logger.debug(
f"[Media Utils] 已清理失败的opus输出文件: {output_path}"
)
except OSError as e:
logger.warning(f"[Media Utils] 清理失败的opus输出文件时出错: {e}")
error_msg = stderr.decode() if stderr else "未知错误"
logger.error(f"[Media Utils] ffmpeg转换音频失败: {error_msg}")
raise Exception(f"ffmpeg conversion failed: {error_msg}")
logger.debug(f"[Media Utils] 音频转换成功: {audio_path} -> {output_path}")
return output_path
except FileNotFoundError:
logger.error(
"[Media Utils] ffmpeg未安装或不在PATH中，无法转换音频格式。请安装ffmpeg: https://ffmpeg.org/"
)
raise Exception("ffmpeg not found")
except Exception as e:
logger.error(f"[Media Utils] 转换音频格式时出错: {e}")
raise
async def convert_video_format(
video_path: str, output_format: str = "mp4", output_path: str | None = None
) -> str:
"""使用ffmpeg转换视频格式
Args:
video_path: 原始视频文件路径
output_format: 目标格式，默认mp4
output_path: 输出文件路径，如果为None则自动生成
Returns:
转换后的视频文件路径
Raises:
Exception: 转换失败时抛出异常
"""
# 如果已经是目标格式，直接返回
if video_path.lower().endswith(f".{output_format}"):
return video_path
# 生成输出文件路径
if output_path is None:
temp_dir = get_astrbot_temp_path()
os.makedirs(temp_dir, exist_ok=True)
output_path = os.path.join(
temp_dir,
f"media_video_{uuid.uuid4().hex}.{output_format}",
)
try:
# 使用ffmpeg转换视频格式
process = await asyncio.create_subprocess_exec(
"ffmpeg",
"-y",
"-i",
video_path,
"-c:v",
"libx264",
"-c:a",
"aac",
output_path,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
stdout, stderr = await process.communicate()
if process.returncode != 0:
# 清理可能已生成但无效的临时文件
if output_path and os.path.exists(output_path):
try:
os.remove(output_path)
logger.debug(
f"[Media Utils] 已清理失败的{output_format}输出文件: {output_path}"
)
except OSError as e:
logger.warning(
f"[Media Utils] 清理失败的{output_format}输出文件时出错: {e}"
)
error_msg = stderr.decode() if stderr else "未知错误"
logger.error(f"[Media Utils] ffmpeg转换视频失败: {error_msg}")
raise Exception(f"ffmpeg conversion failed: {error_msg}")
logger.debug(f"[Media Utils] 视频转换成功: {video_path} -> {output_path}")
return output_path
except FileNotFoundError:
logger.error(
"[Media Utils] ffmpeg未安装或不在PATH中，无法转换视频格式。请安装ffmpeg: https://ffmpeg.org/"
)
raise Exception("ffmpeg not found")
except Exception as e:
logger.error(f"[Media Utils] 转换视频格式时出错: {e}")
raise
async def convert_audio_format(
audio_path: str,
output_format: str = "amr",
output_path: str | None = None,
) -> str:
"""使用ffmpeg将音频转换为指定格式。
Args:
audio_path: 原始音频文件路径
output_format: 目标格式，例如 amr / ogg
output_path: 输出文件路径，如果为None则自动生成
Returns:
转换后的音频文件路径
"""
if audio_path.lower().endswith(f".{output_format}"):
return audio_path
if output_path is None:
temp_dir = Path(get_astrbot_temp_path())
temp_dir.mkdir(parents=True, exist_ok=True)
output_path = str(temp_dir / f"media_audio_{uuid.uuid4().hex}.{output_format}")
args = ["ffmpeg", "-y", "-i", audio_path]
if output_format == "amr":
args.extend(["-ac", "1", "-ar", "8000", "-ab", "12.2k"])
elif output_format == "ogg":
args.extend(["-acodec", "libopus", "-ac", "1", "-ar", "16000"])
args.append(output_path)
try:
process = await asyncio.create_subprocess_exec(
*args,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
_, stderr = await process.communicate()
if process.returncode != 0:
if output_path and os.path.exists(output_path):
try:
os.remove(output_path)
except OSError as e:
logger.warning(f"[Media Utils] 清理失败的音频输出文件时出错: {e}")
error_msg = stderr.decode() if stderr else "未知错误"
raise Exception(f"ffmpeg conversion failed: {error_msg}")
logger.debug(f"[Media Utils] 音频转换成功: {audio_path} -> {output_path}")
return output_path
except FileNotFoundError:
raise Exception("ffmpeg not found")
async def convert_audio_to_amr(audio_path: str, output_path: str | None = None) -> str:
"""将音频转换为amr格式。"""
return await convert_audio_format(
audio_path=audio_path,
output_format="amr",
output_path=output_path,
)
async def convert_audio_to_wav(audio_path: str, output_path: str | None = None) -> str:
"""将音频转换为wav格式。"""
return await convert_audio_format(
audio_path=audio_path,
output_format="wav",
output_path=output_path,
)
async def extract_video_cover(
video_path: str,
output_path: str | None = None,
) -> str:
"""从视频中提取封面图（JPG）。"""
if output_path is None:
temp_dir = Path(get_astrbot_temp_path())
temp_dir.mkdir(parents=True, exist_ok=True)
output_path = str(temp_dir / f"media_cover_{uuid.uuid4().hex}.jpg")
try:
process = await asyncio.create_subprocess_exec(
"ffmpeg",
"-y",
"-i",
video_path,
"-ss",
"00:00:00",
"-frames:v",
"1",
output_path,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
_, stderr = await process.communicate()
if process.returncode != 0:
if output_path and os.path.exists(output_path):
try:
os.remove(output_path)
except OSError as e:
logger.warning(f"[Media Utils] 清理失败的视频封面文件时出错: {e}")
error_msg = stderr.decode() if stderr else "未知错误"
raise Exception(f"ffmpeg extract cover failed: {error_msg}")
return output_path
except FileNotFoundError:
raise Exception("ffmpeg not found")
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