VideoFrameAPI¶

class VideoFrameAPI(api)[source]¶

Bases: ModuleApi

API for working with Frame. VideoFrameAPI object is immutable.

Parameters:

api¶: Api object to use for API connection.

Methods

`convert_info_to_json`	Convert information about an entity to a dictionary.
`download_bytes`	Download frames with given indexes from Dataset in Binary format.
`download_np`	Download Image for frame with given index from given video ID in numpy format (RGB).
`download_nps`	Download frames with given indexes from given video ID in numpy format(RGB).
`download_nps_generator`
`download_path`	Downloads frame on the given path for frame with given index from given Video ID.
`download_paths`	Downloads frames to given paths for frames with given indexes from given Video ID.
`exists`	Checks if an entity with the given parent_id and name exists
`get_free_name`	Generates a free name for an entity with the given parent_id and name.
`get_info_by_id`	Get information about an entity by its ID from the Supervisely server.
`get_info_by_name`	Get information about an entity by its name from the Supervisely server.
`get_list`	Get list of entities in parent entity with given parent ID.
`get_list_all_pages`	Get list of all or limited quantity entities from the Supervisely server.
`get_list_all_pages_generator`	This generator function retrieves a list of all or a limited quantity of entities from the Supervisely server, yielding batches of entities as they are retrieved
`get_list_idx_page_async`	Get the list of items for a given page number.
`get_list_page_generator_async`	Yields list of images in dataset asynchronously page by page.
`info_sequence`	Get list of all class field names.
`info_tuple_name`	Get string name of NamedTuple.

Attributes

`MAX_WAIT_ATTEMPTS`	Maximum number of attempts that will be made to wait for a certain condition to be met.
`WAIT_ATTEMPT_TIMEOUT_SEC`	Number of seconds for intervals between attempts.

classmethod convert_info_to_json(info)¶

Convert information about an entity to a dictionary.

Parameters:

info : NamedTuple¶: Information about the entity.

Returns:

Dictionary with information about the entity.

Return type:

dict

static info_sequence()¶: Get list of all class field names.

static info_tuple_name()¶: Get string name of NamedTuple.

download_bytes(video_id, frame_indexes, progress_cb=None)[source]¶

Download frames with given indexes from Dataset in Binary format.

Parameters:

video_id : int¶: Video ID in Supervisely.
frame_indexes : List[int]¶: List of video frames indexes in Supervisely.
progress_cb : tqdm or callable, optional¶: Function for tracking download progress.

Returns:

List of Images in binary format

Return type:

List[bytes]

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

video_id = 213542
frame_indexes = [1,2,3,4,5,10,11,12,13,14,15]
frames_bytes = api.video.frame.download_bytes(video_id=video_id, frame_indexes=frame_indexes)
print(frames_bytes)
# Output: [b'ÿØÿàJFIF\...']

download_np(video_id, frame_index)[source]¶

Download Image for frame with given index from given video ID in numpy format (RGB).

Parameters:

video_id : int¶: Video ID in Supervisely.
frame_index : int¶: Index of frame to download.

Returns:

Image in RGB numpy matrix format

Return type:

np.ndarray

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

video_id = 198703211
frame_idx = 5
image_np = api.video.frame.download_np(video_id, frame_idx)

download_nps(video_id, frame_indexes, progress_cb=None, keep_alpha=False)[source]¶

Download frames with given indexes from given video ID in numpy format(RGB).

Parameters:

video_id : int¶: Video ID in Supervisely.
frame_indexes : List[int]¶: Indexes of frames to download.
progress_cb : tqdm or callable, optional¶: Function for tracking download progress.

Returns:

List of Images in RGB numpy matrix format

Return type:

List[np.ndarray]

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

video_id = 198703211
frame_indexes = [1,2,3,4,5,10,11,12,13,14,15]
images_np = api.video.frame.download_nps(video_id, frame_indexes)

download_path(video_id, frame_index, path)[source]¶

Downloads frame on the given path for frame with given index from given Video ID.

Parameters:

video_id : int¶: Video ID in Supervisely.
frame_index : int¶: Index of frame to download.
path : str¶: Local save path for image.

Returns:

None

Return type:

None

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

video_id = 198703211
frame_idx = 5
save_path = '/home/admin/Downloads/frames/result.png'
api.video.frame.download_path(video_id, frame_idx, save_path)

download_paths(video_id, frame_indexes, paths, progress_cb=None)[source]¶

Downloads frames to given paths for frames with given indexes from given Video ID.

Parameters:

video_id : int¶: Video ID in Supervisely.
frame_indexes : List[int]¶: Indexes of frames to download.
paths : List[str]¶: Local save paths for frames.
progress_cb : tqdm or callable, optional¶: Function for tracking download progress.

Returns:

None

Return type:

None

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

video_id = 198703211
frame_indexes = [1,2,3,4,5,10,11,12,13,14,15]
save_paths = [f"/home/admin/projects/video_project/frames/{idx}.png" for idx in frame_indexes]
api.video.frame.download_paths(video_id, frame_indexes, save_paths)

exists(parent_id, name)¶

Checks if an entity with the given parent_id and name exists

Parameters:

parent_id : int¶: ID of the parent entity.
name : str¶: Name of the entity.

Returns:

Returns True if entity exists, and False if not

Return type:

bool

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

name = "IMG_0315.jpeg"
dataset_id = 55832
exists = api.image.exists(dataset_id, name)
print(exists) # True

get_free_name(parent_id, name)¶

Generates a free name for an entity with the given parent_id and name. Adds an increasing suffix to original name until a unique name is found.

Parameters:

parent_id : int¶: ID of the parent entity.
name : str¶: Name of the entity.

Returns:

Returns free name.

Return type:

str

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

name = "IMG_0315.jpeg"
dataset_id = 55832
free_name = api.image.get_free_name(dataset_id, name)
print(free_name) # IMG_0315_001.jpeg

get_info_by_id(id)¶

Get information about an entity by its ID from the Supervisely server.

Parameters:

id : int¶: ID of the entity.

get_info_by_name(parent_id, name, fields=[])¶

Get information about an entity by its name from the Supervisely server.

Parameters:

parent_id : int¶: ID of the parent entity.
name : str¶: Name of the entity for which the information is being retrieved.
fields : List[str]¶: The list of api fields which will be returned with the response.

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

dataset_id = 55832
name = "IMG_0315.jpeg"
info = api.image.get_info_by_name(dataset_id, name)
print(info)
# Output: ImageInfo(id=19369643, name='IMG_0315.jpeg', ...)

get_list(parent_id, filters=None)¶

Get list of entities in parent entity with given parent ID.

Parameters:

parent_id : int¶: parent ID in Supervisely.
filters : List[Dict[str, str]], optional¶: List of parameters to sort output entities.

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

dataset_id = 55832
images = api.image.get_list(dataset_id)
print(images)
# Output: [
    ImageInfo(id=19369642, ...)
    ImageInfo(id=19369643, ...)
    ImageInfo(id=19369644, ...)
]

get_list_all_pages(method, data, progress_cb=None, convert_json_info_cb=None, limit=None, return_first_response=False)¶

Get list of all or limited quantity entities from the Supervisely server.

Parameters:

method : str¶: Request method name
data : dict¶: Dictionary with request body info
progress_cb : Progress, optional¶: Function for tracking download progress.
convert_json_info_cb : Callable, optional¶: Function for convert json info
limit : int, optional¶: Number of entity to retrieve
return_first_response : bool, optional¶: Specify if return first response

Returns:

List of entities.

Return type:

List[dict]

get_list_all_pages_generator(method, data, progress_cb=None, convert_json_info_cb=None, limit=None, return_first_response=False)¶

This generator function retrieves a list of all or a limited quantity of entities from the Supervisely server, yielding batches of entities as they are retrieved

Parameters:

method : str¶: Request method name
data : dict¶: Dictionary with request body info
progress_cb : Progress, optional¶: Function for tracking download progress.
convert_json_info_cb : Callable, optional¶: Function for convert json info
limit : int, optional¶: Number of entity to retrieve
return_first_response : bool, optional¶: Specify if return first response

async get_list_idx_page_async(method, data)¶

Get the list of items for a given page number. Page number is specified in the data dictionary.

Parameters:

method : str¶: Method to call for listing items.
data : dict¶: Data to pass to the API method.

Returns:

List of items.

Return type:

Tuple[int, List[NamedTuple]]

async get_list_page_generator_async(method, data, pages_count=None, semaphore=None)¶

Yields list of images in dataset asynchronously page by page.

Parameters:

method : str¶: Method to call for listing items.
data : dict¶: Data to pass to the API method.
pages_count : int, optional¶: Preferred number of pages to retrieve if used with a per_page limit. Will be automatically adjusted if the pagesCount differs from the requested number.
semaphore=None¶: Semaphore for limiting the number of simultaneous requests.

Returns:

List of images in dataset.

Return type:

AsyncGenerator[List[ImageInfo]]

Usage Example:

import os
from dotenv import load_dotenv

import supervisely as sly

# Load secrets and create API object from .env file (recommended)
# Learn more here: https://developer.supervisely.com/getting-started/basics-of-authentication
if sly.is_development():
    load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api.from_env()

method = 'images.list'
data = {'datasetId': 123456}

loop = sly.utils.get_or_create_event_loop()
images = loop.run_until_complete(api.image.get_list_generator_async(method, data))