mirror of
https://github.com/vichan-devel/vichan.git
synced 2024-12-19 02:45:55 +01:00
63 lines
2.1 KiB
PHP
63 lines
2.1 KiB
PHP
<?php
|
|
/*
|
|
* ffmpeg.php
|
|
* A barebones ffmpeg based webm implementation for vichan.
|
|
*/
|
|
|
|
function get_webm_info($filename) {
|
|
global $board, $config;
|
|
|
|
$filename = escapeshellarg($filename);
|
|
$ffprobe = $config['webm']['ffprobe_path'];
|
|
$ffprobe_out = array();
|
|
$webminfo = array();
|
|
|
|
exec("$ffprobe -v quiet -print_format json -show_format -show_streams $filename", $ffprobe_out);
|
|
$ffprobe_out = json_decode(implode("\n", $ffprobe_out), 1);
|
|
$webminfo['error'] = is_valid_webm($ffprobe_out);
|
|
|
|
if(empty($webminfo['error'])) {
|
|
$webminfo['width'] = $ffprobe_out['streams'][0]['width'];
|
|
$webminfo['height'] = $ffprobe_out['streams'][0]['height'];
|
|
}
|
|
|
|
return $webminfo;
|
|
}
|
|
|
|
function is_valid_webm($ffprobe_out) {
|
|
global $board, $config;
|
|
|
|
if (empty($ffprobe_out))
|
|
return array('code' => 1, 'msg' => $config['error']['genwebmerror']);
|
|
|
|
if ($ffprobe_out['format']['format_name'] != 'matroska,webm')
|
|
return array('code' => 2, 'msg' => $config['error']['invalidwebm']);
|
|
|
|
if ((count($ffprobe_out['streams']) > 1) && (!$config['webm']['allow_audio']))
|
|
return array('code' => 3, 'msg' => $config['error']['webmhasaudio']);
|
|
|
|
if ($ffprobe_out['streams'][0]['codec_name'] != 'vp8')
|
|
return array('code' => 2, 'msg' => $config['error']['invalidwebm']);
|
|
|
|
if (empty($ffprobe_out['streams'][0]['width']) || (empty($ffprobe_out['streams'][0]['height'])))
|
|
return array('code' => 2, 'msg' => $config['error']['invalidwebm']);
|
|
|
|
if ($ffprobe_out['format']['duration'] > $config['webm']['max_length'])
|
|
return array('code' => 4, 'msg' => $config['error']['webmtoolong']);
|
|
}
|
|
|
|
function make_webm_thumbnail($filename, $thumbnail, $width, $height) {
|
|
global $board, $config;
|
|
|
|
$filename = escapeshellarg($filename);
|
|
$thumbnail = escapeshellarg($thumbnail); // Should be safe by default but you
|
|
// can never be too safe.
|
|
|
|
$ffmpeg = $config['webm']['ffmpeg_path'];
|
|
$ffmpeg_out = array();
|
|
|
|
exec("$ffmpeg -i $filename -v quiet -ss 00:00:00 -an -vframes 1 -f mjpeg -vf scale=$width:$height $thumbnail 2>&1");
|
|
|
|
return count($ffmpeg_out);
|
|
}
|