def extract_highlights(file_paths):
"""
:param file_paths: 동영상 경로 리스트
:return: 추출한 하이라이트 동영상 경로 리스트
"""
max_highlights = []
min_highlights = []
for file_path in file_paths:
video_clip = VideoFileClip(file_path)
audio_clip = video_clip.audio
src_audio_file_name = get_random_name('wav')
audio_clip.write_audiofile(src_audio_file_name)
source_wave = wave.read(src_audio_file_name)
stereo_channel_wave = source_wave[1].T[1]
normalize_wave = [(ele / 2 ** 8.) * 2 - 1 for ele in stereo_channel_wave] # this is 8-bit track, now normalized on [-1,1)
fourier_transform_wave = fft(normalize_wave) # calculate fourier transform (complex numbers list)
normalize_time = len(fourier_transform_wave) / video_clip.duration
argmax_frequency = np.argmax(fourier_transform_wave) / normalize_time + 0.5
argmin_frequency = np.argmin(abs(fourier_transform_wave)) / normalize_time + 0.5
max_highlight_path = max_highlights.append(get_random_name('mp4'))
min_highlight_path = min_highlights.append(get_random_name('mp4'))
video_clip.subclip(argmax_frequency - (HIGHLIGHT_LENGTH/2), argmax_frequency + (HIGHLIGHT_LENGTH/2)).write_videofile(max_highlight_path, codec='libx264', audio_codec='aac')
video_clip.subclip(argmin_frequency - (HIGHLIGHT_LENGTH/2), argmin_frequency + (HIGHLIGHT_LENGTH/2)).write_videofile(min_highlight_path, codec='libx264', audio_codec='aac')
video_clip.close()
return max_highlights, min_highlights
def edit_sounds(path, pitch, length):
sr = 44100
output_path = get_random_name('wav')
speed = HIGHLIGHT_LENGTH / length
y, sr = librosa.load(path, sr=sr)
write_wav(output_path, time_stretch(pitch_shift(y, sr, pitch), speed), sr)
return output_path
def overwrite_audio(video_path, audio_path, silence):
"""
:param video_path: 영상에 쓰일 하이라이트 영상 경로
:param audio_path: 음계가 조정된 오디오 파일 경로
:param silence: 오디오 파일 제거
:return: 조정된 하이라이트 영상 경로
"""
# Access video file and audio file
video_clip = VideoFileClip(video_path)
audio_clip = AudioFileClip(audio_path)
# Create random file name
video_path = get_random_name('mp4')
# Adjust video speed to sync with audio file
adjusted_video = video_clip.fx(vfx.speedx, final_duration=audio_clip.duration)
# Overwrite video audio
if silence:
adjusted_video.audio = None
adjusted_video.write_videofile(video_path, codec='libx264', audio_codec='aac')
else:
adjusted_video.audio = audio_clip
adjusted_video.write_videofile(video_path, codec='libx264', audio_codec='aac')
return video_path
def merge_videos(file_paths):
clip_list = [VideoFileClip(file_path) for file_path in file_paths]
final_clip = concatenate_videoclips(clip_list)
file_path = get_random_name('mp4')
# Insert background audio
final_clip.audio = add_background_audio(final_clip.audio)
final_clip.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
def extract_audio(video_path):
"""
:param video_path: 영상에 쓰일 하이라이트 영상 경로
:return: 영상에서 추출된 오디오 파일 경로
"""
# Create random file name
audio_path = get_random_name('wav')
# Access video file
video_clip = VideoFileClip(video_path)
# Extract audio file
audio_clip = video_clip.audio
audio_clip.write_audiofile(audio_path)
return audio_path
def downloader(file_urls):
file_paths = []
for url in file_urls:
file_name = get_random_name('mp4')
file_paths.append(file_name)
request = requests.get(url, stream=True)
if request.status_code == 200:
with open(file_name, 'wb') as f:
for chunk in request.iter_content(1024):
f.write(chunk)
"""
:param file_urls: 사용자가 업로드한 동영상 파일 url 리스트
:return: 다운받은 절대 경로 리스트
"""
return file_paths
def _invert_colors(video):
out = video.fx(vfx.invert_colors)
file_path = get_random_name('mp4')
out.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
def _stay(video):
file_path = get_random_name('mp4')
video.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
def _rotate_270(video):
out = video.fx(vfx.rotate, angle=270)
file_path = get_random_name('mp4')
out.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
def _mask_color(video):
out = video.fx(vfx.mask_color, color=[255, 0, 0], thr=100, s=5)
# out = video.on_color(color=(255, 255, 0))
file_path = get_random_name('mp4')
out.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
def _colorx(video):
out = video.fx(vfx.colorx, factor=2)
file_path = get_random_name('mp4')
out.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
def _black_white(video):
out = video.fx(vfx.blackwhite)
file_path = get_random_name('mp4')
out.write_videofile(file_path)
return file_path
def _flip_y(video):
out = video.fx(vfx.mirror_y)
file_path = get_random_name('mp4')
out.write_videofile(file_path, codec='libx264', audio_codec='aac')
return file_path
