├── .gitignore ├── LICENSE ├── README.md ├── bin ├── youtube-drive └── youtube-drive.bat ├── examples ├── BesselJ.png └── painting.jpg ├── requirements.txt ├── setup.py └── youtube_drive ├── __init__.py ├── __main__.py ├── config.py ├── main.py └── youtube_codec.py /.gitignore: -------------------------------------------------------------------------------- 1 | # projects files 2 | painting-retrieved*.jpg 3 | *.mp4 4 | 5 | # MacOS 6 | .DS_Store 7 | .vscode/ 8 | 9 | # Byte-compiled / optimized / DLL files 10 | __pycache__/ 11 | *.py[cod] 12 | *$py.class 13 | 14 | # C extensions 15 | *.so 16 | 17 | # Distribution / packaging 18 | .Python 19 | build/ 20 | develop-eggs/ 21 | dist/ 22 | downloads/ 23 | eggs/ 24 | .eggs/ 25 | lib/ 26 | lib64/ 27 | parts/ 28 | sdist/ 29 | var/ 30 | wheels/ 31 | pip-wheel-metadata/ 32 | share/python-wheels/ 33 | *.egg-info/ 34 | .installed.cfg 35 | *.egg 36 | MANIFEST 37 | 38 | # PyInstaller 39 | # Usually these files are written by a python script from a template 40 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 41 | *.manifest 42 | *.spec 43 | 44 | # Installer logs 45 | pip-log.txt 46 | pip-delete-this-directory.txt 47 | 48 | # Unit test / coverage reports 49 | htmlcov/ 50 | .tox/ 51 | .nox/ 52 | .coverage 53 | .coverage.* 54 | .cache 55 | nosetests.xml 56 | coverage.xml 57 | *.cover 58 | *.py,cover 59 | .hypothesis/ 60 | .pytest_cache/ 61 | 62 | # Translations 63 | *.mo 64 | *.pot 65 | 66 | # Django stuff: 67 | *.log 68 | local_settings.py 69 | db.sqlite3 70 | db.sqlite3-journal 71 | 72 | # Flask stuff: 73 | instance/ 74 | .webassets-cache 75 | 76 | # Scrapy stuff: 77 | .scrapy 78 | 79 | # Sphinx documentation 80 | docs/_build/ 81 | 82 | # PyBuilder 83 | target/ 84 | 85 | # Jupyter Notebook 86 | .ipynb_checkpoints 87 | 88 | # IPython 89 | profile_default/ 90 | ipython_config.py 91 | 92 | # pyenv 93 | .python-version 94 | 95 | # pipenv 96 | # According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. 97 | # However, in case of collaboration, if having platform-specific dependencies or dependencies 98 | # having no cross-platform support, pipenv may install dependencies that don't work, or not 99 | # install all needed dependencies. 100 | #Pipfile.lock 101 | 102 | # PEP 582; used by e.g. github.com/David-OConnor/pyflow 103 | __pypackages__/ 104 | 105 | # Celery stuff 106 | celerybeat-schedule 107 | celerybeat.pid 108 | 109 | # SageMath parsed files 110 | *.sage.py 111 | 112 | # Environments 113 | .env 114 | .venv 115 | env/ 116 | venv/ 117 | ENV/ 118 | env.bak/ 119 | venv.bak/ 120 | 121 | # Spyder project settings 122 | .spyderproject 123 | .spyproject 124 | 125 | # Rope project settings 126 | .ropeproject 127 | 128 | # mkdocs documentation 129 | /site 130 | 131 | # mypy 132 | .mypy_cache/ 133 | .dmypy.json 134 | dmypy.json 135 | 136 | # Pyre type checker 137 | .pyre/ 138 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # youtube-drive 2 | 3 | youtube-drive is totally inspired by [YouTubeDrive](https://github.com/dzhang314/YouTubeDrive), a Wolfram Language (aka Mathematica) package. I read the source code of **YouTubeDrive** and write a Python version with a little change for fun. 4 | 5 | **youtube-drive** is a Python library encodes/decodes arbitrary data to/from simple RGB videos which are automatically uploaded to/downloaded from YouTube. Since YouTube imposes no limits on the total number or length of videos users can upload, this provides an effectively infinite but extremely slow form of file storage. 6 | 7 | youtube-drive is a silly proof-of-concept, and I do not endorse its high-volume use either. 8 | 9 | ## Usage Example 10 | 11 | **Upload**: Encode a file to video and upload to YouTube: 12 | 13 | ```sh 14 | python -m youtube_drive upload examples/BesselJ.png 15 | YouTube Video ID: EzqstWlMXyk 16 | YouTube: https://youtu.be/EzqstWlMXyk 17 | 18 | ``` 19 | 20 | **Retrieve**: Download the video from YouTube and decode to a file: 21 | 22 | ```sh 23 | python -m youtube_drive retrieve --video-id=EzqstWlMXyk -o BesselJ-retrieved.png 24 | /var/folders/md/dnr_ryfs2_x128p26xx2pnnc0000gn/T/tmp6qfm_msc.mp4 25 | [youtube] EzqstWlMXyk: Downloading webpage 26 | [youtube] EzqstWlMXyk: Downloading MPD manifest 27 | [download] Destination: /var/folders/md/dnr_ryfs2_x128p26xx2pnnc0000gn/T/tmp6qfm_msc.f136.mp4 28 | [download] 100% of 1.74MiB in 00:25 29 | [download] Destination: /var/folders/md/dnr_ryfs2_x128p26xx2pnnc0000gn/T/tmp6qfm_msc.mp4.f140 30 | [download] 100% of 58.70KiB in 00:03 31 | [ffmpeg] Merging formats into "/var/folders/md/dnr_ryfs2_x128p26xx2pnnc0000gn/T/tmp6qfm_msc.mp4" 32 | Deleting original file /var/folders/md/dnr_ryfs2_x128p26xx2pnnc0000gn/T/tmp6qfm_msc.f136.mp4 (pass -k to keep) 33 | Deleting original file /var/folders/md/dnr_ryfs2_x128p26xx2pnnc0000gn/T/tmp6qfm_msc.mp4.f140 (pass -k to keep) 34 | ``` 35 | 36 | The video, video ID is **EzqstWlMXyk**, youtube-drive produces in this example can be viewed at https://youtu.be/EzqstWlMXyk. The video is encoded from the image [BesselJ.png](https://github.com/lewangdev/youtube-drive/blob/main/examples/BesselJ.png). A 62KB image file will produce a video of size 10+MB. 37 | 38 | Another file I uploaded to YouTube is [painting.jpg](https://github.com/lewangdev/youtube-drive/blob/main/examples/painting.jpg), it produces a video of size 127.5MB, and the original size is 476KB. The video can be viewed at https://youtu.be/gKhXk3IGW2s. 39 | 40 | I use opencv to produce mp4 video, if use ffmpeg with optimizing directly, the video maybe compress to a more smaller size. 41 | 42 | **AGAIN:** It is a silly idea, just for fun. 43 | 44 | ## Installation 45 | 46 | **Notice**: 47 | 48 | - I only test with **Python 3.8 & 3.9 & 3.10** on **MacOS** with ffmpeg installed. 49 | - If it works on your system, please feel free to let me know. Thanks. 50 | 51 | For development: 52 | 53 | ```sh 54 | git clone https://github.com/lewangdev/youtube-drive.git 55 | cd youtube-drive 56 | python -m venv .venv 57 | . .venv/bin/activate 58 | pip install -r requirements.txt 59 | ``` 60 | 61 | Or run directly from sources: 62 | 63 | ```sh 64 | git clone https://github.com/lewangdev/youtube-drive.git 65 | cd youtube-drive 66 | python -m venv .venv 67 | . .venv/bin/activate 68 | python setup.py install 69 | ``` 70 | 71 | ## Setup 72 | 73 | The first time you try to upload a video to YouTube, you will be asked to follow a URL in your browser to get an authentication token. If you have multiple channels for the logged in user, you will also be asked to pick which one you want to upload the videos to. 74 | 75 | You now need to create and use your own OAuth 2.0 file, it's a free service. Steps: 76 | 77 | Go to the [Google Cloud Console](https://console.cloud.google.com/). 78 | 79 | - Create project. 80 | - Side menu: APIs & Services -> OAuth consent screen: Create app and add the test user you will updoad videos to. 81 | - Side menu: APIs & Services -> Enabled API & services -> ENABLED API AND SERVICES -> Search `youtube` -> Choose `YouTube Data API v3` and enable it. 82 | - Side menu: APIs & Services -> Credentials -> Create Credentials -> OAuth client ID: Application type choose `Desktop app`. 83 | - Download JSON: Under the section "OAuth 2.0 client IDs". Save the file to your local system. 84 | Use this JSON as your credentials file: copy it to ~/.client_secrets.json. 85 | Note: client_secrets.json is a file you can download from the developer console, the credentials file is something auto generated after the first time the script is run and the google account sign in is followed, the file is stored at ~/.youtube-upload-credentials.json. 86 | 87 | If you feel any difficulty to create OAuth 2.0 file, here is the video I made for you: https://youtu.be/kL2oFZt2xHM 88 | 89 | ## Usage 90 | 91 | **Commands:** 92 | 93 | ```sh 94 | python -m youtube_drive -h 95 | usage: youtube-drive [-h] {encode,en,decode,de,upload,up,retrieve,r} ... 96 | 97 | options: 98 | -h, --help show this help message and exit 99 | 100 | commands: 101 | {encode,en,decode,de,upload,up,retrieve,r} 102 | encode (en) encode a file to mp4 video 103 | decode (de) decode a video to a file 104 | upload (up) upload a file to YouTube 105 | retrieve (r) retrieve a video from YouTube save as 106 | 107 | ``` 108 | 109 | If you install from source, you can run the script directly: 110 | 111 | ```sh 112 | youtube-drive -h 113 | usage: youtube-drive [-h] {encode,en,decode,de,upload,up,retrieve,r} ... 114 | 115 | options: 116 | -h, --help show this help message and exit 117 | 118 | commands: 119 | {encode,en,decode,de,upload,up,retrieve,r} 120 | encode (en) encode a file to mp4 video 121 | decode (de) decode a video to a file 122 | upload (up) upload a file to YouTube 123 | retrieve (r) retrieve a video from YouTube save as 124 | 125 | ``` 126 | 127 | **Upload:** 128 | 129 | ```sh 130 | python -m youtube_drive up -h 131 | usage: youtube-drive upload [-h] filename 132 | 133 | positional arguments: 134 | filename encode file to a video and upload to YouTube 135 | 136 | options: 137 | -h, --help show this help message and exit 138 | 139 | ``` 140 | 141 | **Retrieve:** 142 | 143 | ```sh 144 | python -m youtube_drive r -h 145 | usage: youtube-drive retrieve [-h] [--video-id video_id] [-o filename] 146 | 147 | options: 148 | -h, --help show this help message and exit 149 | --video-id video_id download YouTube video with 150 | -o filename save file to 151 | 152 | ``` 153 | 154 | **Local Encode:** 155 | 156 | ```sh 157 | python -m youtube_drive en -h 158 | usage: youtube-drive encode [-h] [-i input_filename] [--video-fps video_fps] video_filename 159 | 160 | positional arguments: 161 | video_filename save the video to this filename 162 | 163 | options: 164 | -h, --help show this help message and exit 165 | -i input_filename encode file to a video 166 | --video-fps video_fps 167 | set video fps, default value is 20 168 | 169 | ``` 170 | 171 | **Local Decode:** 172 | 173 | ``` 174 | python -m youtube_drive de -h 175 | usage: youtube-drive decode [-h] [-i input_video_filename] filename 176 | 177 | positional arguments: 178 | filename Save the output file to this filename 179 | 180 | options: 181 | -h, --help show this help message and exit 182 | -i input_video_filename 183 | decode the video to a file 184 | ``` 185 | 186 | ## The difference between **youtube-drive** and **YouTubeDrive** 187 | 188 | I add 4 bytes for representing data length at the beginning for the file for easily padding to video frames 189 | -------------------------------------------------------------------------------- /bin/youtube-drive: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | 3 | if __name__ == '__main__': 4 | 5 | # Allows you to a relative import from the parent folder 6 | import os.path 7 | import sys 8 | sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), os.pardir)) 9 | 10 | from youtube_upload import main 11 | main.run() 12 | -------------------------------------------------------------------------------- /bin/youtube-drive.bat: -------------------------------------------------------------------------------- 1 | @python %~dp0youtube-drive %* -------------------------------------------------------------------------------- /examples/BesselJ.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lewangdev/youtube-drive/9f4dde40f38bdc48a8e0c937f4b0ba04f73505da/examples/BesselJ.png -------------------------------------------------------------------------------- /examples/painting.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lewangdev/youtube-drive/9f4dde40f38bdc48a8e0c937f4b0ba04f73505da/examples/painting.jpg -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | numpy 2 | opencv-python 3 | pillow 4 | youtube-dl 5 | # youtube-upload 6 | git+https://github.com/tokland/youtube-upload.git 7 | PyCryptodome==3.17.0 -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/python 2 | """Store files as YouTube videos.""" 3 | from distutils.core import setup 4 | 5 | setup_kwargs = { 6 | "name": "youtube-drive", 7 | "version": "0.0.1", 8 | "description": "Store files as YouTube videos", 9 | "author": "Le Wang", 10 | "author_email": "lewang.dev@gmail.com", 11 | "url": "https://github.com/lewangdev/youtube-drive", 12 | "packages": ["youtube_drive/"], 13 | "scripts": ["bin/youtube-drive"], 14 | "license": "Apache-2.0 license", 15 | "long_description": " ".join(__doc__.strip().splitlines()), 16 | "classifiers": [ 17 | 'Topic :: Internet :: WWW/HTTP', 18 | 'Development Status :: 4 - Beta', 19 | 'Environment :: Console', 20 | 'License :: OSI Approved :: Apache Software License', 21 | 'Operating System :: POSIX', 22 | 'Operating System :: Microsoft :: Windows', 23 | 'Programming Language :: Python :: 3', 24 | ], 25 | "entry_points": { 26 | 'console_scripts': [ 27 | 'youtube-drive = youtube_drive.main:run' 28 | ], 29 | }, 30 | "install_requires": [ 31 | 'numpy', 32 | 'opencv-python', 33 | 'youtube-dl', 34 | 'pillow', 35 | 'youtube-upload==0.8.0' 36 | ], 37 | "dependency_links": [ 38 | 'git+https://github.com/tokland/youtube-upload.git#egg=youtube-upload-0.8.0' 39 | ] 40 | } 41 | 42 | setup(**setup_kwargs) 43 | -------------------------------------------------------------------------------- /youtube_drive/__init__.py: -------------------------------------------------------------------------------- 1 | VERSION = "0.0.1" 2 | -------------------------------------------------------------------------------- /youtube_drive/__main__.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | from __future__ import unicode_literals 3 | 4 | # Execute with 5 | # $ python youtube_drive/__main__.py (2.6+) 6 | # $ python -m youtube_drive (2.7+) 7 | 8 | import sys 9 | 10 | if __package__ is None and not hasattr(sys, 'frozen'): 11 | # direct call of __main__.py 12 | import os.path 13 | path = os.path.realpath(os.path.abspath(__file__)) 14 | sys.path.insert(0, os.path.dirname(os.path.dirname(path))) 15 | 16 | import youtube_drive.main 17 | 18 | if __name__ == '__main__': 19 | youtube_drive.main.main(sys.argv[1:]) 20 | -------------------------------------------------------------------------------- /youtube_drive/config.py: -------------------------------------------------------------------------------- 1 | enable_encryption = False 2 | encryption_key = 'DefaultEncryptionKey' -------------------------------------------------------------------------------- /youtube_drive/main.py: -------------------------------------------------------------------------------- 1 | import tempfile 2 | import os 3 | import sys 4 | import uuid 5 | import argparse 6 | import youtube_dl 7 | from youtube_upload import auth, lib, upload_video 8 | from . import youtube_codec 9 | 10 | 11 | def get_youtube_upload_handler(): 12 | """Return the API Youtube object.""" 13 | home = os.path.expanduser("~") 14 | client_secrets = os.path.join(home, ".client_secrets.json") 15 | credentials = os.path.join(home, ".youtube-upload-credentials.json") 16 | get_code_callback = (auth.console.get_code) 17 | return auth.get_resource(client_secrets, credentials, 18 | get_code_callback=get_code_callback) 19 | 20 | 21 | def upload_youtube_video(youtube, title, video_path): 22 | """Upload video with index (for split videos).""" 23 | u = lib.to_utf8 24 | title = u(title) 25 | 26 | request_body = { 27 | "snippet": { 28 | "title": title, 29 | "description": "", 30 | "categoryId": None, 31 | "tags": u(""), 32 | "defaultLanguage": None, 33 | "defaultAudioLanguage": None 34 | 35 | }, 36 | "status": { 37 | "embeddable": True, 38 | "privacyStatus": "unlisted", 39 | "publishAt": None, 40 | "license": "youtube", 41 | }, 42 | "recordingDetails": { 43 | "location": None, 44 | "recordingDate": None, 45 | }, 46 | } 47 | 48 | return upload_video.upload(youtube, video_path, request_body) 49 | 50 | 51 | def download_youtube_video(video_id, output_file_path): 52 | ydl_opts = {'outtmpl': output_file_path} 53 | with youtube_dl.YoutubeDL(ydl_opts) as ydl: 54 | ydl.download([f"https://www.youtube.com/watch?v={video_id}"]) 55 | 56 | 57 | def youtube_upload(upload_file_path): 58 | video_path = tempfile.mktemp(".mp4") 59 | youtube_codec.encode(upload_file_path, video_path) 60 | youtube = get_youtube_upload_handler() 61 | video_id = upload_youtube_video(youtube, f"DATA-{str(uuid.uuid4()).upper()}", video_path) 62 | os.remove(video_path) 63 | return video_id 64 | 65 | 66 | def youtube_retrieve(video_id, output_file_path): 67 | video_path = tempfile.mktemp(".mp4") 68 | print(video_path) 69 | download_youtube_video(video_id, video_path) 70 | youtube_codec.decode(video_path, output_file_path) 71 | 72 | 73 | def cmd_upload(args): 74 | video_id = youtube_upload(args.filename) 75 | print(f"YouTube Video ID: {video_id}", f"YouTube: https://youtu.be/{video_id}", sep="\n") 76 | 77 | 78 | def cmd_retrieve(args): 79 | youtube_retrieve(args.video_id, args.o) 80 | 81 | 82 | def cmd_encode(args): 83 | if args.encrypt and args.key is not None: 84 | args.key = str(args.key).encode("ascii")[:16] 85 | youtube_codec.encode(args.i, args.video_filename, args.encrypt, args.key, args.video_fps) 86 | 87 | 88 | def cmd_decode(args): 89 | if args.decrypt and args.key is not None: 90 | args.key = str(args.key).encode("ascii")[:16] 91 | youtube_codec.decode(args.i, args.filename, args.decrypt, args.key) 92 | 93 | 94 | def main(args): 95 | parser = argparse.ArgumentParser('youtube-drive') 96 | subparsers = parser.add_subparsers(title="commands") 97 | 98 | encode_parser = subparsers.add_parser('encode', aliases=['en'], help='encode a file to mp4 video') 99 | encode_parser.add_argument('-i', 100 | action='store', 101 | metavar="input_filename", 102 | help='encode file to a video') 103 | encode_parser.add_argument('--video-fps', 104 | action='store', 105 | metavar="video_fps", 106 | default=20, 107 | type=int, 108 | help='set video fps, default value is 20') 109 | encode_parser.add_argument('video_filename', 110 | action='store', 111 | help='save the video to this filename') 112 | encode_parser.add_argument('--encrypt', 113 | action='store_true', 114 | default=False, 115 | help='encrypt the file') 116 | encode_parser.add_argument('--key', 117 | action='store', 118 | metavar="encryption_key", 119 | default=None, 120 | help='encryption key') 121 | encode_parser.set_defaults(handle=cmd_encode) 122 | 123 | decode_parser = subparsers.add_parser('decode', aliases=['de'], help='decode a video to a file') 124 | decode_parser.add_argument('-i', 125 | action='store', 126 | metavar="input_video_filename", 127 | help='decode the video to a file') 128 | decode_parser.add_argument('filename', 129 | action='store', 130 | help='Save the output file to this filename') 131 | decode_parser.add_argument('--decrypt', 132 | action='store_true', 133 | default=False, 134 | help='decrypt the file') 135 | decode_parser.add_argument('--key', 136 | action='store', 137 | metavar="decryption_key", 138 | default=None, 139 | help='decryption key') 140 | decode_parser.set_defaults(handle=cmd_decode) 141 | 142 | upload_parser = subparsers.add_parser('upload', aliases=['up'], help='upload a file to YouTube') 143 | upload_parser.add_argument('filename', 144 | action='store', 145 | help='encode file to a video and upload to YouTube') 146 | upload_parser.set_defaults(handle=cmd_upload) 147 | 148 | retrieve_parser = subparsers.add_parser("retrieve", aliases=['r'], 149 | help="retrieve a video from YouTube save as ") 150 | retrieve_parser.add_argument('--video-id', 151 | action='store', 152 | metavar="video_id", 153 | help='download YouTube video with ') 154 | retrieve_parser.add_argument('-o', 155 | action='store', 156 | metavar="filename", 157 | help='save file to ') 158 | retrieve_parser.set_defaults(handle=cmd_retrieve) 159 | arguments = parser.parse_args(args) 160 | if not hasattr(arguments, 'handle'): 161 | parser.print_help() 162 | sys.exit(1) 163 | 164 | arguments.handle(arguments) 165 | 166 | 167 | def run(): 168 | main(sys.argv[1:]) 169 | 170 | 171 | if __name__ == '__main__': 172 | # video_id = youtebe_upload("./examples/upload.mp4") 173 | # print(f"video_id: {video_id}") 174 | # youtube_codec.encode("./examples/painting.jpg", "./examples/upload.mp4") 175 | # youtube_codec.decode("./examples/upload.mp4", "./examples/painting-retrieved.jpg") 176 | # youtube_retrieve("gKhXk3IGW2s", "./examples/painting-retrieved-3.jpg") 177 | main(sys.argv[1:]) 178 | -------------------------------------------------------------------------------- /youtube_drive/youtube_codec.py: -------------------------------------------------------------------------------- 1 | import numpy as np 2 | from PIL import Image 3 | import cv2 4 | 5 | import base64 6 | from Crypto.Cipher import AES 7 | from . import config 8 | 9 | ENABLE_ENCRYPTION = getattr(config, 'enable_encryption', False) 10 | KEY = getattr(config, 'encryption_key', 'DefaultEncryptionKey').encode("ascii")[:16] 11 | 12 | 13 | def quotient_remainder(divident, divsor): 14 | return divident // divsor, divident % divsor 15 | 16 | 17 | def color_value(x): 18 | return x*255 19 | 20 | 21 | def normal(x): 22 | return x/255 23 | 24 | 25 | def encrypt_data_aes(data: bytes, key: bytes) -> bytes: 26 | cipher = AES.new(key, AES.MODE_EAX) 27 | ciphertext, tag = cipher.encrypt_and_digest(data) 28 | return base64.urlsafe_b64encode(cipher.nonce + tag + ciphertext) 29 | 30 | 31 | def decrypt_data_aes(data: bytes, key: bytes) -> bytes: 32 | raw = base64.urlsafe_b64decode(data) 33 | nonce, tag, ciphertext = raw[:16], raw[16:32], raw[32:] 34 | 35 | cipher = AES.new(key, AES.MODE_EAX, nonce) 36 | clear_data = cipher.decrypt_and_verify(ciphertext, tag) 37 | return clear_data 38 | 39 | 40 | def encode(infile_path, outvideo_path, encrypt=ENABLE_ENCRYPTION, key=KEY, 41 | fps=20, num_cols_per_frame=64, num_rows_per_frame=36): 42 | fd = open(infile_path, 'rb') 43 | raw_data_bytes = fd.read() 44 | if encrypt: 45 | raw_data_bytes = encrypt_data_aes(raw_data_bytes, key) 46 | data_bytes = np.frombuffer(raw_data_bytes, dtype=np.uint8) 47 | len_of_data = len(data_bytes) 48 | num_bytes_per_row = int(num_cols_per_frame * 3 / 8) 49 | num_bytes_per_frame = num_bytes_per_row * num_rows_per_frame 50 | 51 | len_bytes = np.array(bytearray(len_of_data.to_bytes(4, byteorder='big')), dtype=np.uint8) 52 | (num_frames, num_leftover_bytes) = quotient_remainder(4 + len_of_data, num_bytes_per_frame) 53 | 54 | if num_leftover_bytes > 0: 55 | num_bytes_last_frame_padding = num_bytes_per_frame - num_leftover_bytes 56 | padding_bytes = np.full((num_bytes_last_frame_padding), 0, dtype=np.uint8) 57 | data_bytes = np.concatenate((len_bytes, data_bytes, padding_bytes)) 58 | num_frames += 1 59 | else: 60 | data_bytes = np.concatenate((len_bytes, data_bytes)) 61 | 62 | # Vedio: size=(1280, 720), fps=20 63 | size = (num_cols_per_frame * 20, num_rows_per_frame * 20) 64 | 65 | video = cv2.VideoWriter(outvideo_path, cv2.VideoWriter_fourcc( 66 | *'mp4v'), fps, size) 67 | 68 | for i in range(num_frames): 69 | frame_bytes = data_bytes[i * num_bytes_per_frame: (i + 1) * num_bytes_per_frame] 70 | frame_bits = np.unpackbits(frame_bytes) 71 | # Reshape array to array(36， 72， 3) 72 | frame = color_value(frame_bits).reshape(num_rows_per_frame, num_cols_per_frame, 3) 73 | img = Image.fromarray(frame, mode="RGB") 74 | # Scale image to (1280, 720) 75 | newimg = img.resize(size, Image.Resampling.BOX) 76 | video.write(np.asarray(newimg)) 77 | fd.close() 78 | 79 | 80 | def decode(invideo_path, outfile_path, decrypt=ENABLE_ENCRYPTION, key=KEY): 81 | i = 0 82 | step = 20 83 | data_bits_list = [] 84 | cap = cv2.VideoCapture(invideo_path) 85 | ret, frame = cap.read() 86 | while ret: 87 | frame_shape = np.shape(frame) 88 | for j in range(0, frame_shape[0], step): 89 | for k in range(0, frame_shape[1], step): 90 | piece = frame[j:j+step, k:k+step].reshape(step*step, 3) 91 | round = normal(piece.mean(0)).round().astype(np.uint8) 92 | data_bits_list.append(round) 93 | ret, frame = cap.read() 94 | i += 1 95 | cap.release() 96 | data_bits = np.array(data_bits_list).reshape(len(data_bits_list) * 3, 1) 97 | data_bytes = np.packbits(data_bits) 98 | len_of_data = int.from_bytes(data_bytes[:4], byteorder='big') 99 | data_bytes_retrieved = data_bytes[4:len_of_data+4].tobytes() 100 | if decrypt: 101 | data_bytes_retrieved = decrypt_data_aes(data_bytes_retrieved, key) 102 | fd = open(outfile_path, 'wb') 103 | fd.write(data_bytes_retrieved) 104 | fd.close() 105 | 106 | 107 | if __name__ == '__main__': 108 | # encode("../examples/painting.jpg", "../examples/upload.mp4") 109 | # decode("../examples/upload.mp4", "../examples/painting-retrieved2.jpg") 110 | pass 111 | 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