[#2497] Media preview proxy: added quality config setting, adjusted width/height defaults.

This commit is contained in:
Ivan Tashkinov 2020-08-21 08:59:08 +03:00
parent 02ad1cd8e9
commit aa0a5ffb48
4 changed files with 15 additions and 5 deletions

View file

@ -441,8 +441,9 @@
# Note: media preview proxy depends on media proxy to be enabled
config :pleroma, :media_preview_proxy,
enabled: false,
thumbnail_max_width: 400,
thumbnail_max_height: 200,
thumbnail_max_width: 600,
thumbnail_max_height: 600,
quality: 2,
proxy_opts: [
head_request_max_read_duration: 5_000
]

View file

@ -1925,6 +1925,11 @@
type: :integer,
description: "Max height of preview thumbnail."
},
%{
key: :quality,
type: :integer,
description: "Quality of the output. Ranges from 1 (max quality) to 31 (lowest quality)."
},
%{
key: :proxy_opts,
type: :keyword,

View file

@ -7,13 +7,15 @@ defmodule Pleroma.Helpers.MediaHelper do
Handles common media-related operations.
"""
def ffmpeg_resize(uri_or_path, %{max_width: max_width, max_height: max_height}) do
def ffmpeg_resize(uri_or_path, %{max_width: max_width, max_height: max_height} = options) do
quality = options[:quality] || 1
cmd = ~s"""
ffmpeg -i #{uri_or_path} -f lavfi -i color=c=white \
-filter_complex "[0:v] scale='min(#{max_width},iw)':'min(#{max_height},ih)': \
force_original_aspect_ratio=decrease [scaled]; \
[1][scaled] scale2ref [bg][img]; [bg] setsar=1 [bg]; [bg][img] overlay=shortest=1" \
-loglevel quiet -f image2 -vcodec mjpeg -frames:v 1 pipe:1
-loglevel quiet -f image2 -vcodec mjpeg -frames:v 1 -q:v #{quality} pipe:1
"""
pid = Port.open({:spawn, cmd}, [:use_stdio, :in, :stream, :exit_status, :binary])

View file

@ -78,12 +78,14 @@ defp handle_preview(content_type, conn, _url) do
end
defp handle_image_or_video_preview(%{params: params} = conn, url) do
quality = Config.get!([:media_preview_proxy, :quality])
with {thumbnail_max_width, thumbnail_max_height} <- thumbnail_max_dimensions(params),
media_proxy_url <- MediaProxy.url(url),
{:ok, thumbnail_binary} <-
MediaHelper.ffmpeg_resize(
media_proxy_url,
%{max_width: thumbnail_max_width, max_height: thumbnail_max_height}
%{max_width: thumbnail_max_width, max_height: thumbnail_max_height, quality: quality}
) do
conn
|> put_resp_header("content-type", "image/jpeg")