Unable to post animated GIFs, documentation unclear

[jetley]

I'm trying to post an animated gif (less than 15MB) but nothing happens.

Here's my minimal working example:

import tweepy
import os

consumer_key = ''
consumer_secret = ''
key = ''
secret = ''

auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(key, secret)

api = tweepy.API(auth, wait_on_rate_limit=True)

api.media_upload("./gif/GIF_CAPTION_OPTIMIZED.gif")

Nothing is uploaded and the following error is shown in console:

Traceback (most recent call last):
  File "e:\PAU\bot\000 MAIN\testuploadgif.py", line 14, in <module>
    api.media_upload("./gif/GIF_CAPTION_OPTIMIZED.gif")
  File "C:\Users\34684\AppData\Local\Programs\Python\Python39\lib\site-packages\tweepy\api.py", line 243, in media_upload
    return bind_api(
  File "C:\Users\34684\AppData\Local\Programs\Python\Python39\lib\site-packages\tweepy\binder.py", line 253, in _call
    return method.execute()
  File "C:\Users\34684\AppData\Local\Programs\Python\Python39\lib\site-packages\tweepy\binder.py", line 234, in execute
    raise TweepError(error_msg, resp, api_code=api_error_code)
tweepy.error.TweepError: Twitter error response: status code = 413

I'm not using api.update_with_media() as it is deprecated.

Is this a bug or am I simply doing it wrong? I cannot find further information in the documentation or examples that help me with this.

[Harmon758]

The 413 (Payload Too Large) [HTTP response] status code indicates that the server is refusing to process a request because the request payload is larger than the server is willing or able to process.

https://datatracker.ietf.org/doc/html/rfc7231#section-6.5.11

It seems like you're using a version of Tweepy that doesn't support chunked uploading of media.
This is likely a duplicate of #1501 that should be resolved with #1486 in the latest development version on the master branch, set to be released as part of v4.0.

Feel free to submit a new issue if you can reproduce this with the latest development version.