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• passing additional values to s3 event notification for lambda consumption

  8 septembre 2017, par user1790300

  I have to write code in react-native that allows a user to upload videos to amazon s3 to be transcoded for consumption by various devices. For the processing after the upload occurs ; I am reviewing two approaches :

  1) I can use Lambda with ffmpeg to handle the transcoding immediately after the uploading occurs (my fear here would be the amount of time required to transcode the videos and the effect on pricing if it takes a considerable amount of time).

  2) I can have s3 pass an sns message to a rest api after the created event occurs and the rest api generate a rabbitmq message that will be processed by worker that will perform the transcoding using ffmpeg.

  Option 1) seems to be the preferable option based on a completion time perspective. How concerned should I be with using 1) considering how long video transcoding might take as opposed to option 2) ?

  Also, regardless, I need a way to pass additional parameters to lambda or along the sns messaging that would allow me to somehow associate the user who uploaded the video with their account. Is there a way to pass additional text-based values to s3 to pass along to lambda or along sns when the upload completes, as a caveat I plan to upload the video directly to s3 using the rest layer(found this answer here : http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html#RESTObjectPUT-responses-examples) ?

• Merge pull request #3678 from timgates42/bugfix_typo_number

  18 septembre 2020, par blueimp

  Merge pull request #3678 from timgates42/bugfix_typo_number
  docs : Fix simple typo, numer -> number
  

• FFmpeg not found for manim installation

  19 février 2023, par Jason Grace

  I was trying to install manim so I ran the following commands in my VScode terminal

  


  >>pip install manim
>>pip install FFmpeg-python


  


  However, when I ran a sample manim program on VScode(copy pasted from the tutorial), I received the following information.

  


  RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
  warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)


  


  I have tried downloading a pre-compiled ffmpeg from https://ffmpeg.org/download.html#build-windows, but when I downloaded it there was no way to unzip it.
My code below :

  


  from manim import *


class CreateCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        circle.set_fill(PINK, opacity=0.5)  # set the color and transparency
        self.play(Create(circle))  # show the circle on screen


  


  Tutorial/Installation guide link I used :
https://docs.manim.community/en/stable/installation/windows.html#required-dependencies

  


  Please note that I am on a windows 64-bit computer

  


  Can anyone help me install manim or ffmpeg properly ?