Telegram sticker packs with animated stickers fail to import

[Azel04]

Attempting to import any Telegram Sticker Pack with an animated sticker results in this error

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/REDACTED/stickerpicker/.venv/bin/sticker-import", line 8, in
sys.exit(cmd())
^^^^^
File "/home/REDACTED/stickerpicker/.venv/lib/python3.12/site-packages/sticker/stickerimport.py", line 161, in cmd
asyncio.get_event_loop().run_until_complete(main(parser.parse_args()))
File "/usr/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "/home/REDACTED/stickerpicker/.venv/lib/python3.12/site-packages/sticker/stickerimport.py", line 153, in main
await reupload_pack(client, pack, args.output_dir)
File "/home/REDACTED/stickerpicker/.venv/lib/python3.12/site-packages/sticker/stickerimport.py", line 84, in reupload_pack
reuploaded_documents[document.id] = await reupload_document(client, document)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/REDACTED/stickerpicker/.venv/lib/python3.12/site-packages/sticker/stickerimport.py", line 36, in reupload_document
data, width, height = util.convert_image(data)
^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/REDACTED/stickerpicker/.venv/lib/python3.12/site-packages/sticker/lib/util.py", line 28, in convert_image
image: Image.Image = Image.open(BytesIO(data)).convert("RGBA")
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/REDACTED/stickerpicker/.venv/lib/python3.12/site-packages/PIL/Image.py", line 3498, in open
raise UnidentifiedImageError(msg)
PIL.UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0x74c06caf7600>

The sticker pack i tried is this one: https://t.me/addstickers/precure2

[robertototaro]

I can reproduce this problem with other Telegram sticker packs, for example:
https://t.me/addstickers/Hedgehoge
https://t.me/addstickers/NickWallowPig
https://t.me/addstickers/MooingCow

[Azel04]

After quickly looking into the code, i think there may be a way to fix this.

Animated Telegram Stickers use the WEBM format which apparently isn't compatible with the image conversion library used here.

Maybe we can convert WEBM to another format like GIF with FFMpeg? Or maybe we can change the image conversion library to another one that supports WEBM.

[3ttercap]

After quickly looking into the code, i think there may be a way to fix this.

Animated Telegram Stickers use the WEBM format which apparently isn't compatible with the image conversion library used here.

Maybe we can convert WEBM to another format like GIF with FFMpeg? Or maybe we can change the image conversion library to another one that supports WEBM.

yes, I used pylottie, playwright, Pillow at https://pypi.org/project/pyrlottie/ (https://github.com/FHPythonUtils/PyLottie/blob/master/README.md) which help converting the .tgs sticker file to .gif file, which could be used here right?

a quick demo code:

import os
from pylottie import convertMultLottie2ALL

def convert_single_tgs_to_gif(tgs_file, output_file):
# Convert the single TGS file to the specified output format, multiple files supported.
convertMultLottie2ALL([tgs_file], [output_file])

if name == "main":
# Define the input and output file paths
input_file = "animation.tgs" # Example TGS file
output_file = "animation" # Corresponding output file without extension

# Check if the input file exists
if not os.path.exists(input_file):
    print(f"Input file '{input_file}' does not exist.")
else:
    # Convert the TGS file to GIF
    convert_single_tgs_to_gif(input_file, output_file)