为什么将视频上传到 azure blob 存储这么慢？ [江戈]

Question

I have a problem when uploading a video to the Azure blob storage with Django. I am not sure if it has something to do with the Django framework being slow or my code.

btw, it is a project from me and my friend and he did the most work. So it's possible that I don't know everything. :)

When uploading a video of like 1GB it will take around 2/3 minutes.

What I have looked into but not implemented yet:

1. AZCopy
2. multithreading

video model:

    def create_file_path_video(instance, name):
    return os.path.join('sources', str(instance.pk), name)


    class Video(models.Model):
        video = models.FileField(upload_to=create_file_path_video, validators=[validate_video_file_extension], null=True)
        name = models.CharField(max_length=255, null=True)
        storage_name = models.CharField(max_length=255, null=True)
        size = models.BigIntegerField(null=True)
        fps = models.FloatField(null=True)
        frames_count = models.FloatField(null=True)
        duration = models.FloatField(null=True)
        type = models.CharField(max_length=10, null=True)
        uploaded_by = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=False)
        uploaded_at = models.DateTimeField(default=datetime.now, null=True, blank=True)
        deleted_at = models.DateTimeField(null=True, blank=True)

    def __duration(self):
        return int(self.frames_count/self.fps)

Form:

class UploadVideoForm(forms.ModelForm):
    class Meta:
        model = Video
        fields = ['video']
        widgets = {
            'name': forms.HiddenInput(),
            'uploaded_by': forms.HiddenInput(),
            'uploaded_at': forms.HiddenInput(),
            'type': forms.HiddenInput(),
            'size': forms.HiddenInput()
        }

View:

def video_create_view(request):
    context = {}
    form = UploadVideoForm(request.POST or None, request.FILES or None)

    if request.user.is_superuser or request.user.groups.filter(name="Editor").exists():
        if request.method == 'POST':
            form = UploadVideoForm(request.POST, request.FILES)
            video_obj = Video.objects.create()
            if form.is_valid():
                name = request.FILES['video'].name.split('.')[0]
                date_string = datetime.datetime.now().strftime("%Y-%m-%d")
                video_obj.name = name
                video_obj.storage_name = date_string+"_"+name
                video_obj.size = request.FILES['video'].size
                video_obj.uploaded_by = request.user
                video_obj.type = request.FILES['video'].name.split('.')[1]
                video_obj.video = request.FILES['video']
                video_obj.save()
                video_path = get_file_path(video_obj.video)
                video = cv2.VideoCapture(video_path)
                # Find OpenCV version
                (major_ver, minor_ver, subminor_ver) = (cv2.__version__).split('.')
                if int(major_ver) < 3:
                    
                    fps = float(video.get(cv2.cv.CV_CAP_PROP_FPS))
                    frames_count = float(video.get(cv2.CAP_PROP_FRAME_COUNT))
                    video_obj.fps = fps
                    video_obj.frames_count = frames_count
                    video_obj.duration = frames_count/fps

                else:
                    fps = video.get(cv2.CAP_PROP_FPS)
                    frames_count = video.get(cv2.CAP_PROP_FRAME_COUNT)
                    video_obj.fps = fps
                    video_obj.frames_count = frames_count
                    video_obj.duration = frames_count/fps
                video_obj.save()
                video.release()
                messages.success(request, "Video uploaded!")
            return redirect('video:video-list')
    context['form'] = form
    return render(request, 'video/upload_form.html', context)

I have debugged and I noticed that the video_obj.save() is almost taking all the time it needs.

Can someone help me with this problem? It would be very nice! <3

Answer 1

You can upload your media asset to Azure Blob Storage with Shared Access Signatures .

Solutions to speed up upload and download by SAS Token

For more details, pls check below blogs which is .Net . You can search about python language.

1. Uploading to Azure Blob Storage with Shared Access Signatures

2. How to Access an Blob Container Using Shared Access Signatures

Python:

1. How to upload files to azure blob storage?

2. Azure Storage - Upload File - Python (Sample Code)