Week 2

February 13, 2022

This week I set up my repositories and starting writing some basic code.

Set up #

Before starting any coding, I wanted to set up my remote git repositories. I had already decided I wanted the project mirrored over two remote git repositories from different providers as a safety precaution. My intial plan was to use the university’s GitLab instance but as it’s recently been moved behind the firewall it would have made mirroring quite difficult. Instead, I decided to use my personal Gitea instance and mirror it to my personal account on the official GitLab instance.

Gitea → GitLab

Gitea will periodically push to GitLab.

Code #

Towards the end of the week I put together some simple code to reduce the frame set. I used the OpenCV Python module to export the frames of a given video to an output/ folder. The path of this folder is also stored in the outputfolder variable we see used on line 7.

Although this code is a first step at reducing the frames set - it doesn’t give us much feedback about the frames that have been deleted or kept.

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def display_file_sizes():
"""Calculates the average frame filesize and deletes the frames lower
than the average
"""
    # create an array storing the filesize of each frame
    filesizes = []
    for filename in os.listdir(outputfolder):
        filepath = outputfolder + "/" + filename
        filesize = os.path.getsize(filepath)
        print(filepath + ": " + str(filesize))
        filesizes.append(filesize)

    # work out average
    average = sum(filesizes)/len(filesizes)
    print ("Average is: " + str(average))

    # delete files below average
    count = 0
    for filename in os.listdir(outputfolder):
        filepath = outputfolder + "/" + filename
        if filesizes[count] < average:
            # print(filepath + ": " + str(filesizes[count]))
            os.remove(filepath)
        count += 1

I didn’t end up doing as much as I would have liked this week. I found myself preoccupied in other areas of my life and not putting enough emphasis on this project.

1:1 Weekly meeting #

• As I didn’t do as much as I would like to have done there wasn’t much to discuss on my part
• I needed to produce more code to have some basic functionality.
• Discussed my concerns with a machine learning approach