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• How to execute docker in cloud (ffmpeg, docker)

  8 octobre 2022, par M.K. Kim

  I want to execute a dockerized python cli that transcodes a video file in cloud.
Locally it works fine but I'd like to hear your thoughts on how to best implement this in cloud. Below is the dockerfile and how docker is run. As you see it takes two arguments(input/output file path)

  


  //Dockerfile

FROM alpine:3.12

# Install requirements
RUN apk add python3 && \
    apk add py3-pip  && \
    pip3 install --upgrade pip && \
    apk add ffmpeg


# Install dependency
RUN pip3 install dependency1

# Create work directory and run container as user
RUN addgroup -S app && adduser -S app -G app
RUN mkdir /app && chown app:app /app
WORKDIR /app
USER app

# Use my-app as entrypoint (allows passing arguments)
ENTRYPOINT ["/usr/bin/my-app"]



  


  docker build . -t my-app:latest
docker run --rm -it -v $PWD:/app my-app:latest inputfile.mp4 outputfile.mp4


  


  Locally it works. But I want to build a front-end where I can upload a video file in cloud storage (S3, Google Cloud Storage, etc) and I want the output file to be either uploaded into cloud storage or downloaded from the browser.

  


  what would be the best approach in this case ? using this docker image as a layer to lambda function would be a good approach ? I'm not sure how to pass arguments (path of input output file) in cloud

  


• How to fix the problem of wrong colors shown in the local video window of MicroSIP ?

  25 juillet 2022, par Yadid

  I'm developing a project which is a customization based on MicroSIP in Windows. The local video window performs the video stream from Screen Capture Recorder, which is as a virtual camera and captures the screen. And the problem is the colors of the picture of the local video window are not correct. The picture I uploaded is the example of the problem, it seems like that the red and the blue are exchanged.

  
I'd tried to upgrade the FFmpeg to 5.0.1 and the SDL to 2.0.22, both are probably the latest versions, but it doesn't fix the color problem.

  
This problem also occurs when using the latest official version of MicroSIP(3.21.2).
  
source code of MicroSIP
  
source code of PJSIP (the low-level module which provides interfaces for video, audio, etc. Maybe it's the origin of the color problem)
  
And while using some of the other software which can display pictures of the virtual camera, they can show pictures fine with the correct colors, e.g. MyCam.

  
How to fix this problem ? Or which parts can I do some research on about this problem ? Any help would be appreciated.

  


• ERROR : SvtAv1Enc not found using pkg-config

  2 novembre 2023, par Dmitry Maksakov

  I am trying to compile FFmpeg with SVT-AV1 codec, following instructions from here : https://github.com/OpenVisualCloud/SVT-AV1/tree/master/ffmpeg_plugin

  



  Everything goes well, but when I try to run

  



  ./configure --enable-libsvtav1


  



  I am getting

  



  ERROR: SvtAv1Enc not found using pkg-config

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.


  



  The content of the ffbuild/config.log : https://pastebin.com/euPriFAp

  



  There is an exact issue on the github : https://github.com/OpenVisualCloud/SVT-AV1/issues/35, but is closed as solved.

  



  I have tried both on my Mac and in the Docker container with Ubuntu 18.04, but getting the same result.

  



  Could anyone please help, what am I doing wrong ?