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

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This commit is contained in:
Ivan Tashkinov 2020-08-21 08:59:08 +03:00
commit aa0a5ffb48
4 changed files with 15 additions and 5 deletions
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6
lib/pleroma/helpers/media_helper.ex
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@ -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])