def _init_video_manager(self, input_list, framerate, downscale):
self.base_timecode = None
logging.debug('Initializing VideoManager.')
video_manager_initialized = False
try:
self.video_manager = VideoManager(
video_files=input_list, framerate=framerate, logger=logging)
video_manager_initialized = True
self.base_timecode = self.video_manager.get_base_timecode()
self.video_manager.set_downscale_factor(downscale)
except VideoOpenFailure as ex:
error_strs = [
'could not open video%s.' % get_plural(ex.file_list),
'Failed to open the following video file%s:' % get_plural(ex.file_list)]
error_strs += [' %s' % file_name[0] for file_name in ex.file_list]
dll_okay, dll_name = check_opencv_ffmpeg_dll()
if not dll_okay:
error_strs += [
'Error: OpenCV dependency %s not found.' % dll_name,
'Ensure that you installed the Python OpenCV module, and that the',
'%s file can be found to enable video support.' % dll_name]
logging.debug('\n'.join(error_strs[1:]))
if not dll_okay:
click.echo(click.style(
'\nOpenCV dependency missing, video input/decoding not available.\n', fg='red'))
raise click.BadParameter('\n'.join(error_strs), param_hint='input video')
except VideoFramerateUnavailable as ex:
error_strs = ['could not get framerate from video(s)',
'Failed to obtain framerate for video file %s.' % ex.file_name]
error_strs.append('Specify framerate manually with the -f / --framerate option.')
logging.debug('\n'.join(error_strs))
raise click.BadParameter('\n'.join(error_strs), param_hint='input video')
except VideoParameterMismatch as ex:
error_strs = ['video parameters do not match.', 'List of mismatched parameters:']
for param in ex.file_list:
if param[0] == cv2.CAP_PROP_FPS:
param_name = 'FPS'
if param[0] == cv2.CAP_PROP_FRAME_WIDTH:
param_name = 'Frame width'
if param[0] == cv2.CAP_PROP_FRAME_HEIGHT:
param_name = 'Frame height'
error_strs.append(' %s mismatch in video %s (got %.2f, expected %.2f)' % (
param_name, param[3], param[1], param[2]))
error_strs.append(
'Multiple videos may only be specified if they have the same framerate and'
' resolution. -f / --framerate may be specified to override the framerate.')
logging.debug('\n'.join(error_strs))
raise click.BadParameter('\n'.join(error_strs), param_hint='input videos')
except InvalidDownscaleFactor as ex:
error_strs = ['Downscale value is not > 0.', str(ex)]
logging.debug('\n'.join(error_strs))
raise click.BadParameter('\n'.join(error_strs), param_hint='downscale factor')
return video_manager_initialized
def _init_video_manager(self, input_list, framerate, downscale):
self.base_timecode = None
logging.debug('Initializing VideoManager.')
video_manager_initialized = False
try:
self.video_manager = VideoManager(
video_files=input_list, framerate=framerate, logger=logging)
video_manager_initialized = True
self.base_timecode = self.video_manager.get_base_timecode()
self.video_manager.set_downscale_factor(downscale)
except VideoOpenFailure as ex:
error_strs = [
'could not open video%s.' % get_plural(ex.file_list),
'Failed to open the following video file%s:' % get_plural(ex.file_list)]
error_strs += [' %s' % file_name[0] for file_name in ex.file_list]
dll_okay, dll_name = check_opencv_ffmpeg_dll()
if not dll_okay:
error_strs += [
'Error: OpenCV dependency %s not found.' % dll_name,
'Ensure that you installed the Python OpenCV module, and that the',
'%s file can be found to enable video support.' % dll_name]
logging.debug('\n'.join(error_strs[1:]))
if not dll_okay:
click.echo(click.style(
'\nOpenCV dependency missing, video input/decoding not available.\n', fg='red'))
raise click.BadParameter('\n'.join(error_strs), param_hint='input video')
except VideoFramerateUnavailable as ex:
error_strs = ['could not get framerate from video(s)',
'Failed to obtain framerate for video file %s.' % ex.file_name]
error_strs.append('Specify framerate manually with the -f / --framerate option.')
logging.debug('\n'.join(error_strs))
raise click.BadParameter('\n'.join(error_strs), param_hint='input video')
except VideoParameterMismatch as ex:
error_strs = ['video parameters do not match.', 'List of mismatched parameters:']
for param in ex.file_list:
if param[0] == cv2.CAP_PROP_FPS:
param_name = 'FPS'
if param[0] == cv2.CAP_PROP_FRAME_WIDTH:
param_name = 'Frame width'
if param[0] == cv2.CAP_PROP_FRAME_HEIGHT:
param_name = 'Frame height'
error_strs.append(' %s mismatch in video %s (got %.2f, expected %.2f)' % (
param_name, param[3], param[1], param[2]))
error_strs.append(
'Multiple videos may only be specified if they have the same framerate and'
' resolution. -f / --framerate may be specified to override the framerate.')
logging.debug('\n'.join(error_strs))
raise click.BadParameter('\n'.join(error_strs), param_hint='input videos')
except InvalidDownscaleFactor as ex:
error_strs = ['Downscale value is not > 0.', str(ex)]
logging.debug('\n'.join(error_strs))
raise click.BadParameter('\n'.join(error_strs), param_hint='downscale factor')
return video_manager_initialized
