dropin

commit

c633dba9a615f926188f748cf36c24895f376e82

parent

4f2084275e9234070beba31b5a8f6dd9ca172f63

Author

Tobias Bengfort <tobias.bengfort@posteo.de>

Date

2025-02-07 12:28

calculate CO₂ intensity of videos

Diffstat

3 files changed, 29 insertions, 3 deletions

diff --git a/dropin.py b/dropin.py

@@ -62,6 +62,32 @@ def duration(value):
   62    62 env.filters['duration'] = duration
   63    63 
   64    64 
   -1    65 def co2(bytes, green_hosting=0):
   -1    66     # https://sustainablewebdesign.org/estimating-digital-emissions/
   -1    67 
   -1    68     # kWh/GB
   -1    69     operational_datacenter = 0.055
   -1    70     operational_network = 0.059
   -1    71     operational_device = 0.08
   -1    72     embodied_datacenter = 0.012
   -1    73     embodied_network = 0.013
   -1    74     embodied_device = 0.081
   -1    75 
   -1    76     # CO2e/kWh
   -1    77     grid_intensity = 494
   -1    78 
   -1    79     grams = bytes / 1_000_000_000 * grid_intensity * sum([
   -1    80         operational_datacenter * (1 - green_hosting),
   -1    81         operational_network,
   -1    82         operational_device,
   -1    83         embodied_datacenter,
   -1    84         embodied_network,
   -1    85         embodied_device,
   -1    86     ])
   -1    87     return f'{grams:.3g}g CO₂'
   -1    88 env.filters['co2'] = co2
   -1    89 
   -1    90 
   65    91 def linebreaks(text):
   66    92     return Markup('').join(
   67    93         Markup('<p>{}</p>').format(

diff --git a/static/video.js b/static/video.js

@@ -35,7 +35,7 @@ var applyQuality = function(quality, lazy) {
   35    35 var createMenu = function() {
   36    36     var sources = Array.from(video.querySelectorAll('[data-quality]')).reverse();
   37    37     var ul = h('ul', {'class': 'quality'}, sources.map(source => h('li', {}, [
   38    -1         h('button', {'type': 'button'}, [source.dataset.quality]),
   -1    38         h('button', {'type': 'button', 'title': source.dataset.co2}, [source.dataset.quality]),
   39    39     ])));
   40    40     ul.append(h('li', {}, [
   41    41         h('button', {'type': 'button'}, ['auto']),

diff --git a/templates/video.html b/templates/video.html

@@ -5,8 +5,8 @@
    5     5 {% block content %}
    6     6     <div class="relative">
    7     7         <video controls poster="{{ thumbnail.large }}" preload="none" crossorigin="anonymous">
    8    -1             {% for format, type, quality in FORMATS %}
    9    -1                 <source type="{{ type }}" src="/video/{{ id }}-{{ quality }}.{{ format }}" {% if quality != 'adaptive' %}media="(min-height: {{ quality }}x)" data-quality="{{ quality }}"{% endif %}>
   -1     8             {% for file in _embedded.files %}
   -1     9                 <source type="{{ file.mime_type }}" src="/video/{{ id }}-{{ file.quality }}.{{ file.format }}" {% if file.quality != 'adaptive' %}media="(min-height: {{ file.quality }}x)" data-quality="{{ file.quality }}" data-co2="{{ file.size.formatted }} (~{{ file.size.bytes|co2 }})"{% endif %}>
   10    10             {% endfor %}
   11    11             {% for track in tracks.subtitles %}
   12    12                 <track kind="{{ track.kind }}" label="{{ track.label }}" srclang="{{ track.srclang }}" src="{{ track._links.vtt.href }}">