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b3c65ae b7a6480 4c52cd0 b3c65ae 4c52cd0 944e83e 4c52cd0 0190f40 b3c65ae 64a2ea3 b3c65ae 64a2ea3 b3c65ae 64a2ea3 b3c65ae 944e83e 64a2ea3 944e83e 64a2ea3 944e83e 64a2ea3 b3c65ae 0190f40 b3c65ae 944e83e 0190f40 944e83e 0190f40 944e83e 0190f40 944e83e 0190f40 944e83e b3c65ae b7a6480 8532e19 b7a6480 944e83e b7a6480 944e83e b7a6480 | 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 | """Video processing utilities for OutofLipSync"""
import json
import os
import subprocess
from fractions import Fraction
from ffmpy import FFmpeg, FFRuntimeError
from config import (
YOUTUBE_VIDEO_PRESET,
YOUTUBE_VIDEO_CRF,
YOUTUBE_VIDEO_PROFILE,
YOUTUBE_VIDEO_LEVEL,
YOUTUBE_VIDEO_PIX_FMT,
YOUTUBE_AUDIO_CODEC,
YOUTUBE_AUDIO_BITRATE,
YOUTUBE_AUDIO_SAMPLE_RATE,
)
# def crop_video_duration(video_path: str, duration: int, output_dir: str) -> str:
# """Crop video to specified duration using FFmpeg (DEPRECATED - merged into normalize_video_for_youtube)
#
# Args:
# video_path: Path to input video
# duration: Duration in seconds
# output_dir: Directory to save cropped video
#
# Returns:
# Path to cropped video
# """
# cropped_video_path = os.path.join(output_dir, "input_cropped.mp4")
# ffmpeg = FFmpeg(
# inputs={video_path: None},
# outputs={
# cropped_video_path: [
# "-t",
# f"{duration}",
# "-c",
# "copy",
# "-loglevel",
# "error",
# "-y",
# ]
# },
# )
# try:
# ffmpeg.run()
# except FFRuntimeError as e:
# raise Exception(f"FFmpeg failed: {e}")
# return cropped_video_path
def loop_video(video_path: str, output_path: str, loop_count: int) -> str:
"""Loop video bằng stream_loop với copy codec
Args:
video_path: Path video gốc
output_path: Path output video đã loop
loop_count: Số lần loop
Returns:
Path video đã loop
"""
ffmpeg = FFmpeg(
inputs={video_path: ["-stream_loop", f"{loop_count}"]},
outputs={
output_path: [
"-c",
"copy",
"-loglevel",
"error",
"-y",
]
},
)
try:
ffmpeg.run()
except FFRuntimeError as e:
raise Exception(f"FFmpeg failed to loop video: {e}")
return output_path
def encode_video_for_youtube(
video_path: str, output_path: str, duration: float | None = None
) -> str:
"""Encode video theo tiêu chuẩn YouTube
Args:
video_path: Path video input
output_path: Path output video
duration: Duration crop (None = không crop)
Returns:
Path video đã encode
"""
ffmpeg_args = [
"-c:v",
"libx264",
"-preset",
YOUTUBE_VIDEO_PRESET,
"-crf",
str(YOUTUBE_VIDEO_CRF),
"-profile:v",
YOUTUBE_VIDEO_PROFILE,
"-level",
YOUTUBE_VIDEO_LEVEL,
"-pix_fmt",
YOUTUBE_VIDEO_PIX_FMT,
"-c:a",
"copy",
"-movflags",
"+faststart",
"-loglevel",
"error",
"-y",
]
if duration is not None:
ffmpeg_args = ["-t", f"{duration}"] + ffmpeg_args
ffmpeg = FFmpeg(
inputs={video_path: None},
outputs={output_path: ffmpeg_args},
)
try:
ffmpeg.run()
except FFRuntimeError as e:
raise Exception(f"FFmpeg failed to encode video: {e}")
return output_path
def normalize_video_for_youtube(
video_path: str, audio_duration: float, output_dir: str
) -> str:
"""Chuẩn hóa video theo tiêu chuẩn YouTube
- Loop nếu ngắn hơn audio, crop nếu dài hơn
- Re-encode: libx264, preset slow, CRF 18, profile high, level 4.2, yuv420p
Args:
video_path: Path video gốc
audio_duration: Duration audio (seconds)
output_dir: Output directory
Returns:
Path video đã chuẩn hóa
"""
video_info = get_video_info(video_path)
video_duration = video_info["duration"]
output_path = os.path.join(output_dir, "video_normalized.mp4")
if video_duration >= audio_duration:
encode_video_for_youtube(video_path, output_path, audio_duration)
else:
loop_count = int(audio_duration // video_duration) + 1
temp_looped = os.path.join(output_dir, "video_looped_temp.mp4")
loop_video(video_path, temp_looped, loop_count)
encode_video_for_youtube(temp_looped, output_path, audio_duration)
os.remove(temp_looped)
return output_path
def merge_audio_video(video_path: str, audio_path: str, output_dir: str) -> str:
"""Merge video with audio track using FFmpeg with YouTube-optimized encoding
Args:
video_path: Path to input video
audio_path: Path to audio track
output_dir: Directory to save merged video
Returns:
Path to merged video
"""
video_out = os.path.join(output_dir, "output_final.mp4")
ffmpeg = FFmpeg(
inputs={video_path: None, audio_path: None},
outputs={
video_out: [
"-c:v",
"libx264",
"-preset",
YOUTUBE_VIDEO_PRESET,
"-crf",
str(YOUTUBE_VIDEO_CRF),
"-profile:v",
YOUTUBE_VIDEO_PROFILE,
"-level",
YOUTUBE_VIDEO_LEVEL,
"-pix_fmt",
YOUTUBE_VIDEO_PIX_FMT,
"-map",
"0:v:0",
"-map",
"1:a:0",
"-c:a",
YOUTUBE_AUDIO_CODEC,
"-b:a",
YOUTUBE_AUDIO_BITRATE,
"-ar",
str(YOUTUBE_AUDIO_SAMPLE_RATE),
"-shortest",
"-movflags",
"+faststart",
"-loglevel",
"error",
"-y",
]
},
)
try:
ffmpeg.run()
except FFRuntimeError as e:
raise Exception(f"FFmpeg failed: {e}")
return video_out
def get_video_info(video_path: str) -> dict:
"""Get video information: resolution, duration, fps
Args:
video_path: Path to video
Returns:
Dict with keys: width, height, duration, fps
"""
cmd = [
"ffprobe",
"-v",
"error",
"-select_streams",
"v:0",
"-show_entries",
"stream=width,height,r_frame_rate",
"-show_entries",
"format=duration",
"-of",
"json",
video_path,
]
result = subprocess.run(cmd, capture_output=True, text=True, check=True)
data = json.loads(result.stdout)
width = data["streams"][0]["width"]
height = data["streams"][0]["height"]
fps = float(Fraction(data["streams"][0]["r_frame_rate"]))
duration = float(data["format"]["duration"])
return {"width": width, "height": height, "fps": fps, "duration": duration}
def loop_video_to_match_audio(
video_path: str, audio_duration: float, output_dir: str
) -> str:
"""Loop video to match audio target duration
Args:
video_path: Path to video source
audio_duration: Audio target duration (seconds)
output_dir: Output directory
Returns:
Path to looped/cropped video
"""
video_info = get_video_info(video_path)
video_duration = video_info["duration"]
output_path = os.path.join(output_dir, "video_looped.mp4")
if video_duration >= audio_duration:
ffmpeg = FFmpeg(
inputs={video_path: None},
outputs={
output_path: [
"-t",
f"{audio_duration}",
"-c",
"copy",
"-loglevel",
"error",
"-y",
]
},
)
else:
loop_count = int(audio_duration // video_duration) + 1
ffmpeg = FFmpeg(
inputs={video_path: ["-stream_loop", f"{loop_count}"]},
outputs={
output_path: [
"-t",
f"{audio_duration}",
"-c",
"copy",
"-loglevel",
"error",
"-y",
]
},
)
try:
ffmpeg.run()
except FFRuntimeError as e:
raise Exception(f"FFmpeg failed: {e}")
return output_path
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