nystudio107\transcoder\services\Transcode

Complexity

Total Complexity

112

Size/Duplication

Total Lines	896
Duplicated Lines	0 %

Importance

Changes	33
Bugs	2	Features	0

14 Methods

Rating	Name	Duplication	Size	Complexity
F	getAudioUrl()	0	131	20
A	executeShellCommand()	0	19	4
C	getFileInfo()	0	64	16
A	coalesceOptions()	0	8	1
B	getAssetPath()	0	47	10
A	getGifFilename()	0	12	1
B	getVideoThumbnailUrl()	0	80	10
A	getVideoFilename()	0	12	1
A	handleGetAssetThumbPath()	0	7	1
A	getAudioFilename()	0	12	1
B	addScalingFfmpegArgs()	0	41	9
F	getVideoUrl()	0	127	19
B	getFilename()	0	37	9
B	getGifUrl()	0	86	10

<?php
/**
 * Transcoder plugin for Craft CMS
 *
 * Transcode videos to various formats, and provide thumbnails of the video
 *
 * @link      https://nystudio107.com

The tag in position 1 should be the @copyright tag

 * @copyright Copyright (c) 2017 nystudio107

@copyright tag must contain a year and the name of the copyright holder

 */

PHP version not specified

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namespace nystudio107\transcoder\services;

use Craft;
use craft\base\Component;
use craft\elements\Asset;

The type craft\elements\Asset was not found. Maybe you did not declare it correctly or list all dependencies?

use craft\events\DefineAssetThumbUrlEvent;
use craft\fs\Local;
use craft\helpers\App;
use craft\helpers\FileHelper;
use craft\helpers\Json as JsonHelper;
use mikehaertl\shellcommand\Command as ShellCommand;
use nystudio107\transcoder\Transcoder;
use yii\base\Exception;
use yii\base\InvalidConfigException;
use yii\validators\UrlValidator;
use function count;
use function function_exists;
use function in_array;
use function is_bool;

/**

Missing short description in doc comment

 * @author    nystudio107

The tag in position 1 should be the @package tag

Content of the @author tag must be in the form "Display Name <username@example.com>"

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 * @package   Transcode

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 * @since     1.0.0

The tag in position 3 should be the @author tag

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 */

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class Transcode extends Component
{
    // Constants
    // =========================================================================

    // Suffixes to add to the generated filename params
    protected const SUFFIX_MAP = [
        'videoFrameRate' => 'fps',
        'videoBitRate' => 'bps',
        'audioBitRate' => 'bps',
        'audioChannels' => 'c',
        'height' => 'h',
        'width' => 'w',
        'timeInSecs' => 's',
    ];

    // Params that should be excluded from being part of the generated filename
    protected const EXCLUDE_PARAMS = [
        'videoEncoder',
        'audioEncoder',
        'fileSuffix',
        'sharpen',
        'synchronous',
        'stripMetadata',
        'videoCodecOptions',
    ];

    // Mappings for getFileInfo() summary values
    protected const INFO_SUMMARY = [
        'format' => [
            'filename' => 'filename',
            'duration' => 'duration',
            'size' => 'size',
        ],
        'audio' => [
            'codec_name' => 'audioEncoder',
            'bit_rate' => 'audioBitRate',
            'sample_rate' => 'audioSampleRate',
            'channels' => 'audioChannels',
        ],
        'video' => [
            'codec_name' => 'videoEncoder',
            'bit_rate' => 'videoBitRate',
            'avg_frame_rate' => 'videoFrameRate',
            'height' => 'height',
            'width' => 'width',
        ],
    ];

    // Public Methods
    // =========================================================================

    /**
     * Returns a URL to the transcoded video or "" if it doesn't exist (at
     * which
     * time it will create it).
     *
     * @param string|Asset $filePath string  path to the original video -OR- an

Expected 5 spaces after parameter name; 1 found

     *                           Asset

Parameter comment not aligned correctly; expected 31 spaces but found 27

     * @param array $videoOptions array   of options for the video

Expected 8 spaces after parameter type; 1 found

     * @param bool $generate whether the video should be encoded

Expected 9 spaces after parameter type; 1 found

Expected 5 spaces after parameter name; 1 found

     *
     * @return string       URL of the transcoded video or ""
     * @throws InvalidConfigException
     */
    public function getVideoUrl(string|Asset $filePath, array $videoOptions, bool $generate = true): string
    {
        $result = '';
        $settings = Transcoder::$plugin->getSettings();

The method getSettings() does not exist on null.

        $subfolder = '';

        // sub folder check
        if (($filePath instanceof Asset) && $settings['createSubfolders']) {
            $subfolder = $filePath->folderPath;
        }

        // file path
        $filePath = $this->getAssetPath($filePath);

        if (!empty($filePath)) {
            $destVideoPath = $settings['transcoderPaths']['video'] ?? $settings['transcoderPaths']['default'];
            $destVideoPath .= $subfolder;
            $destVideoPath = App::parseEnv($destVideoPath);
            $videoOptions = $this->coalesceOptions('defaultVideoOptions', $videoOptions);

            // Get the video encoder presets to use
            $videoEncoders = $settings['videoEncoders'];
            $thisEncoder = $videoEncoders[$videoOptions['videoEncoder']];

            $videoOptions['fileSuffix'] = $thisEncoder['fileSuffix'];

            // Build the basic command for ffmpeg
            $ffmpegCmd = $settings['ffmpegPath']
                . ' -i ' . escapeshellarg($filePath)
                . ' -vcodec ' . $thisEncoder['videoCodec']
                . ' ' . $thisEncoder['videoCodecOptions']
                . ' -bufsize 1000k'
                . ' -threads ' . $thisEncoder['threads'];

            // Set the framerate if desired
            if (!empty($videoOptions['videoFrameRate'])) {
                $ffmpegCmd .= ' -r ' . $videoOptions['videoFrameRate'];
            }

            // Set the bitrate if desired
            if (!empty($videoOptions['videoBitRate'])) {
                $ffmpegCmd .= ' -b:v ' . $videoOptions['videoBitRate'] . ' -maxrate ' . $videoOptions['videoBitRate'];
            }

            // Adjust the scaling if desired
            $ffmpegCmd = $this->addScalingFfmpegArgs(
                $videoOptions,
                $ffmpegCmd
            );

            // Handle any audio transcoding
            if (empty($videoOptions['audioBitRate'])
                && empty($videoOptions['audioSampleRate'])
                && empty($videoOptions['audioChannels'])
            ) {
                // Just copy the audio if no options are provided
                $ffmpegCmd .= ' -c:a copy';
            } else {
                // Do audio transcoding based on the settings
                $ffmpegCmd .= ' -acodec ' . $thisEncoder['audioCodec'];
                if (!empty($videoOptions['audioBitRate'])) {
                    $ffmpegCmd .= ' -b:a ' . $videoOptions['audioBitRate'];
                }
                if (!empty($videoOptions['audioSampleRate'])) {
                    $ffmpegCmd .= ' -ar ' . $videoOptions['audioSampleRate'];
                }
                if (!empty($videoOptions['audioChannels'])) {
                    $ffmpegCmd .= ' -ac ' . $videoOptions['audioChannels'];
                }
                $ffmpegCmd .= ' ' . $thisEncoder['audioCodecOptions'];
            }

            // Create the directory if it isn't there already
            if (!is_dir($destVideoPath)) {

It seems like $destVideoPath can also be of type null; however, parameter $filename of is_dir() does only seem to accept string, maybe add an additional type check?

                try {
                    FileHelper::createDirectory($destVideoPath);
                } catch (Exception $e) {
                    Craft::error($e->getMessage(), __METHOD__);
                }
            }

            $destVideoFile = $this->getFilename($filePath, $videoOptions);

            // File to store the video encoding progress in
            $progressFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $destVideoFile . '.progress';

            // Assemble the destination path and final ffmpeg command
            $destVideoPath .= $destVideoFile;
            $ffmpegCmd .= ' -f '
                . $thisEncoder['fileFormat']
                . ' -y ' . escapeshellarg($destVideoPath)
                . ' 1> ' . $progressFile . ' 2>&1 & echo $!';

            // Make sure there isn't a lockfile for this video already
            $lockFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $destVideoFile . '.lock';
            $oldPid = @file_get_contents($lockFile);
            if ($oldPid !== false) {
                // See if the process is running, and empty result means the process is still running
                // ref: https://stackoverflow.com/questions/3043978/how-to-check-if-a-process-id-pid-exists
                exec("kill -0 $oldPid 2>&1", $ProcessState);
                if (count($ProcessState) === 0) {
                    return $result;
                }
                // It's finished transcoding, so delete the lockfile and progress file
                @unlink($lockFile);

It seems like you do not handle an error condition for unlink(). This can introduce security issues, and is generally not recommended.

                @unlink($progressFile);
            }

            // If the video file already exists and hasn't been modified, return it.  Otherwise, start it transcoding
            if (file_exists($destVideoPath) && (@filemtime($destVideoPath) >= @filemtime($filePath))) {
                $url = $settings['transcoderUrls']['video'] ?? $settings['transcoderUrls']['default'];
                $url .= $subfolder;
                $result = App::parseEnv($url) . $destVideoFile;
            // skip encoding

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            } elseif (!$generate) {
                $result = '';
            } else {
                // Kick off the transcoding
                $pid = $this->executeShellCommand($ffmpegCmd);
                Craft::info($ffmpegCmd . "\nffmpeg PID: " . $pid, __METHOD__);

                // Create a lockfile in tmp
                file_put_contents($lockFile, $pid);
            }
        }

        return $result;
    }

    /**
     * Returns a URL to a video thumbnail
     *
     * @param Asset|string $filePath path to the original video or an Asset

Expected 9 spaces after parameter name; 1 found

     * @param array $thumbnailOptions of options for the thumbnail

Expected 8 spaces after parameter type; 1 found

     * @param bool $generate whether the thumbnail should be

Expected 9 spaces after parameter type; 1 found

Expected 9 spaces after parameter name; 1 found

     *                                 generated if it doesn't exists

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     * @param bool $asPath Whether we should return a path or not

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Expected 11 spaces after parameter name; 1 found

     *
     * @return string|false|null URL or path of the video thumbnail
     * @throws InvalidConfigException
     */
    public function getVideoThumbnailUrl(Asset|string $filePath, array $thumbnailOptions, bool $generate = true, bool $asPath = false): string|false|null
    {
        $result = null;
        $settings = Transcoder::$plugin->getSettings();
        $subfolder = '';

        // sub folder check
        if (($filePath instanceof Asset) && $settings['createSubfolders']) {
            $subfolder = $filePath->folderPath;
        }

        $filePath = $this->getAssetPath($filePath);

        if (!empty($filePath)) {
            $destThumbnailPath = $settings['transcoderPaths']['thumbnail'] ?? $settings['transcoderPaths']['default'];
            $destThumbnailPath .= $subfolder;
            $destThumbnailPath = App::parseEnv($destThumbnailPath);

            $thumbnailOptions = $this->coalesceOptions('defaultThumbnailOptions', $thumbnailOptions);

            // Build the basic command for ffmpeg
            $ffmpegCmd = $settings['ffmpegPath']
                . ' -i ' . escapeshellarg($filePath)
                . ' -vcodec mjpeg'
                . ' -vframes 1';

            // Adjust the scaling if desired
            $ffmpegCmd = $this->addScalingFfmpegArgs(
                $thumbnailOptions,
                $ffmpegCmd
            );

            // Set the timecode to get the thumbnail from if desired
            if (!empty($thumbnailOptions['timeInSecs'])) {
                $timeCode = gmdate('H:i:s', $thumbnailOptions['timeInSecs']);
                $ffmpegCmd .= ' -ss ' . $timeCode . '.00';
            }

            // Create the directory if it isn't there already
            if (!is_dir($destThumbnailPath)) {

It seems like $destThumbnailPath can also be of type null; however, parameter $filename of is_dir() does only seem to accept string, maybe add an additional type check?

                try {
                    FileHelper::createDirectory($destThumbnailPath);
                } catch (Exception $e) {
                    Craft::error($e->getMessage(), __METHOD__);
                }
            }

            $destThumbnailFile = $this->getFilename($filePath, $thumbnailOptions);

            // Assemble the destination path and final ffmpeg command
            $destThumbnailPath .= $destThumbnailFile;
            $ffmpegCmd .= ' -f image2 -y ' . escapeshellarg($destThumbnailPath) . ' >/dev/null 2>/dev/null &';

            // If the thumbnail file already exists, return it.  Otherwise, generate it and return it
            if (!file_exists($destThumbnailPath)) {
                if ($generate) {
                    /** @noinspection PhpUnusedLocalVariableInspection */

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                    $shellOutput = $this->executeShellCommand($ffmpegCmd);
                    Craft::info($ffmpegCmd, __METHOD__);

                // if ffmpeg fails which we can't check because the process is ran in the background

Line indented incorrectly; expected at least 20 spaces, found 16

                    // don't return the future path of the image or else we can't check this in the front end
                } else {
                    Craft::info('Thumbnail does not exist, but not asked to generate it: ' . $filePath, __METHOD__);

                    // The file doesn't exist, and we weren't asked to generate it
                }
                return false;
            }
            // Return either a path or a URL
            if ($asPath) {
                $result = $destThumbnailPath;
            } else {
                $url = $settings['transcoderUrls']['thumbnail'] ?? $settings['transcoderUrls']['default'];
                $url .= $subfolder;
                $result = App::parseEnv($url) . $destThumbnailFile;
            }
        }

        return $result;
    }

    /**
     * Returns a URL to the transcoded audio file or "" if it doesn't exist
     * (at which time it will create it).
     *
     * @param Asset|string $filePath path to the original audio file -OR- an Asset

Expected 5 spaces after parameter name; 1 found

     * @param array $audioOptions array of options for the audio file

Expected 8 spaces after parameter type; 1 found

     *
     * @return string       URL of the transcoded audio file or ""
     * @throws InvalidConfigException
     */
    public function getAudioUrl(Asset|string $filePath, array $audioOptions): string
    {
        $result = '';
        $settings = Transcoder::$plugin->getSettings();
        $subfolder = '';

        // sub folder check
        if (($filePath instanceof Asset) && $settings['createSubfolders']) {
            $subfolder = $filePath->folderPath;
        }

        $filePath = $this->getAssetPath($filePath);

        if (!empty($filePath)) {
            $destAudioPath = $settings['transcoderPaths']['audio'] ?? $settings['transcoderPaths']['default'];
            $destAudioPath .= $subfolder;
            $destAudioPath = App::parseEnv($destAudioPath);

            $audioOptions = $this->coalesceOptions('defaultAudioOptions', $audioOptions);

            // Get the audio encoder presets to use
            $audioEncoders = $settings['audioEncoders'];
            $thisEncoder = $audioEncoders[$audioOptions['audioEncoder']];

            $audioOptions['fileSuffix'] = $thisEncoder['fileSuffix'];

            // Build the basic command for ffmpeg
            $ffmpegCmd = $settings['ffmpegPath']
                . ' -i ' . escapeshellarg($filePath)
                . ' -acodec ' . $thisEncoder['audioCodec']
                . ' ' . $thisEncoder['audioCodecOptions']
                . ' -bufsize 1000k'
                . ' -vn'
                . ' -threads ' . $thisEncoder['threads'];

            // Set the bitrate if desired
            if (!empty($audioOptions['audioBitRate'])) {
                $ffmpegCmd .= ' -b:a ' . $audioOptions['audioBitRate'];
            }
            // Set the sample rate if desired
            if (!empty($audioOptions['audioSampleRate'])) {
                $ffmpegCmd .= ' -ar ' . $audioOptions['audioSampleRate'];
            }
            // Set the audio channels if desired
            if (!empty($audioOptions['audioChannels'])) {
                $ffmpegCmd .= ' -ac ' . $audioOptions['audioChannels'];
            }
            $ffmpegCmd .= ' ' . $thisEncoder['audioCodecOptions'];

            if (!empty($audioOptions['seekInSecs'])) {
                $ffmpegCmd .= ' -ss ' . $audioOptions['seekInSecs'];
            }

            if (!empty($audioOptions['timeInSecs'])) {
                $ffmpegCmd .= ' -t ' . $audioOptions['timeInSecs'];
            }

            // Create the directory if it isn't there already
            if (!is_dir($destAudioPath)) {

It seems like $destAudioPath can also be of type null; however, parameter $filename of is_dir() does only seem to accept string, maybe add an additional type check?

                try {
                    FileHelper::createDirectory($destAudioPath);
                } catch (Exception $e) {
                    Craft::error($e->getMessage(), __METHOD__);
                }
            }

            $destAudioFile = $this->getFilename($filePath, $audioOptions);

            // File to store the audio encoding progress in
            $progressFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $destAudioFile . '.progress';

            // Assemble the destination path and final ffmpeg command
            $destAudioPath .= $destAudioFile;
            // Handle the `stripMetadata` setting
            $stripMetadata = false;
            if (!empty($audioOptions['stripMetadata'])) {
                $stripMetadata = $audioOptions['stripMetadata'];
            }
            if ($stripMetadata) {
                $ffmpegCmd .= ' -map_metadata -1 ';
            }
            // Add the file format
            $ffmpegCmd .= ' -f '
                . $thisEncoder['fileFormat']
                . ' -y ' . escapeshellarg($destAudioPath);
            // Handle the `synchronous` setting
            $synchronous = false;
            if (!empty($audioOptions['synchronous'])) {
                $synchronous = $audioOptions['synchronous'];
            }
            if (!$synchronous) {
                $ffmpegCmd .= ' 1> ' . $progressFile . ' 2>&1 & echo $!';
                // Make sure there isn't a lockfile for this audio file already
                $lockFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $destAudioFile . '.lock';
                $oldPid = @file_get_contents($lockFile);
                if ($oldPid !== false) {
                    // See if the process is running, and empty result means the process is still running
                    // ref: https://stackoverflow.com/questions/3043978/how-to-check-if-a-process-id-pid-exists
                    exec("kill -0 $oldPid 2>&1", $ProcessState);
                    if (count($ProcessState) === 0) {
                        return $result;
                    }
                    // It's finished transcoding, so delete the lockfile and progress file
                    @unlink($lockFile);
                    @unlink($progressFile);
                }
            }

            // If the audio file already exists and hasn't been modified, return it.  Otherwise, start it transcoding
            if (file_exists($destAudioPath) && (@filemtime($destAudioPath) >= @filemtime($filePath))) {
                $url = $settings['transcoderUrls']['audio'] ?? $settings['transcoderUrls']['default'];
                $url .= $subfolder;
                $result = App::parseEnv($url) . $destAudioFile;
            } else {
                // Kick off the transcoding
                $pid = $this->executeShellCommand($ffmpegCmd);

                if ($synchronous) {
                    Craft::info($ffmpegCmd, __METHOD__);
                    $url = $settings['transcoderUrls']['audio'] ?? $settings['transcoderUrls']['default'];
                    $url .= $subfolder;
                    $result = App::parseEnv($url) . $destAudioFile;
                } else {
                    Craft::info($ffmpegCmd . "\nffmpeg PID: " . $pid, __METHOD__);
                    // Create a lockfile in tmp
                    file_put_contents($lockFile, $pid);

The variable $lockFile does not seem to be defined for all execution paths leading up to this point.

                }
            }
        }

        return $result;
    }

    /**
     * Extract information from a video/audio file
     *
     * @param Asset|string $filePath

Missing parameter comment

     * @param bool $summary

Missing parameter comment

Expected 9 spaces after parameter type; 1 found

     *
     * @return null|array
     * @throws InvalidConfigException
     */
    public function getFileInfo(Asset|string $filePath, bool $summary = false): ?array
    {
        $result = null;
        $settings = Transcoder::$plugin->getSettings();
        $filePath = $this->getAssetPath($filePath);

        if (!empty($filePath)) {
            // Build the basic command for ffprobe
            $ffprobeOptions = $settings['ffprobeOptions'];
            $ffprobeCmd = $settings['ffprobePath']
                . ' ' . $ffprobeOptions
                . ' ' . escapeshellarg($filePath);

            $shellOutput = $this->executeShellCommand($ffprobeCmd);
            Craft::info($ffprobeCmd, __METHOD__);
            $result = JsonHelper::decodeIfJson($shellOutput, true);
            Craft::info(print_r($result, true), __METHOD__);

It seems like print_r($result, true) can also be of type true; however, parameter $message of yii\BaseYii::info() does only seem to accept array|string, maybe add an additional type check?

            // Handle the case it not being JSON
            if (!is_array($result)) {
                $result = [];
            }
            // Trim down the arrays to just a summary
            if ($summary && !empty($result)) {
                $summaryResult = [];
                foreach ($result as $topLevelKey => $topLevelValue) {
                    switch ($topLevelKey) {
                        // Format info
                        case 'format':

Line indented incorrectly; expected 20 spaces, found 24

                            foreach (self::INFO_SUMMARY['format'] as $settingKey => $settingValue) {

Line indented incorrectly; expected 24 spaces, found 28

                                if (!empty($topLevelValue[$settingKey])) {

Line indented incorrectly; expected 28 spaces, found 32

                                    $summaryResult[$settingValue] = $topLevelValue[$settingKey];
                                }

Line indented incorrectly; expected 28 spaces, found 32

                            }

Line indented incorrectly; expected 24 spaces, found 28

                            break;
                        // Stream info
                        case 'streams':

Line indented incorrectly; expected 20 spaces, found 24

                            foreach ($topLevelValue as $stream) {

Line indented incorrectly; expected 24 spaces, found 28

                                $infoSummaryType = $stream['codec_type'];
                                if (in_array($infoSummaryType, self::INFO_SUMMARY, false)) {

Line indented incorrectly; expected 28 spaces, found 32

                                    foreach (self::INFO_SUMMARY[$infoSummaryType] as $settingKey => $settingValue) {

Line indented incorrectly; expected 32 spaces, found 36

                                        if (!empty($stream[$settingKey])) {

Line indented incorrectly; expected 36 spaces, found 40

                                            $summaryResult[$settingValue] = $stream[$settingKey];
                                        }

Line indented incorrectly; expected 36 spaces, found 40

                                    }

Line indented incorrectly; expected 32 spaces, found 36

                                }

Line indented incorrectly; expected 28 spaces, found 32

                            }

Line indented incorrectly; expected 24 spaces, found 28

                            break;
                        // Unknown info
                        default:

Line indented incorrectly; expected 20 spaces, found 24

                            break;
                    }
                }
                // Handle cases where the framerate is returned as XX/YY
                if (!empty($summaryResult['videoFrameRate'])
                    && (str_contains($summaryResult['videoFrameRate'], '/'))
                ) {
                    $parts = explode('/', $summaryResult['videoFrameRate']);
                    $summaryResult['videoFrameRate'] = (float)$parts[0] / (float)$parts[1];
                }
                $result = $summaryResult;
            }
        }

        return $result;
    }

    /**
     * Get the name of a video file from a path and options
     *
     * @param Asset|string $filePath

Missing parameter comment

     * @param array $videoOptions

Expected 8 spaces after parameter type; 1 found

Missing parameter comment

     *
     * @return string
     * @throws InvalidConfigException
     */
    public function getVideoFilename(Asset|string $filePath, array $videoOptions): string
    {
        $settings = Transcoder::$plugin->getSettings();
        $videoOptions = $this->coalesceOptions('defaultVideoOptions', $videoOptions);

        // Get the video encoder presets to use
        $videoEncoders = $settings['videoEncoders'];
        $thisEncoder = $videoEncoders[$videoOptions['videoEncoder']];

        $videoOptions['fileSuffix'] = $thisEncoder['fileSuffix'];

        return $this->getFilename($filePath, $videoOptions);
    }

    /**
     * Get the name of an audio file from a path and options
     *
     * @param Asset|string $filePath

Missing parameter comment

     * @param array $audioOptions

Expected 8 spaces after parameter type; 1 found

Missing parameter comment

     *
     * @return string
     * @throws InvalidConfigException
     */
    public function getAudioFilename(Asset|string $filePath, array $audioOptions): string
    {
        $settings = Transcoder::$plugin->getSettings();
        $audioOptions = $this->coalesceOptions('defaultAudioOptions', $audioOptions);

        // Get the video encoder presets to use
        $audioEncoders = $settings['audioEncoders'];
        $thisEncoder = $audioEncoders[$audioOptions['audioEncoder']];

        $audioOptions['fileSuffix'] = $thisEncoder['fileSuffix'];

        return $this->getFilename($filePath, $audioOptions);
    }

    /**
     * Get the name of a gif video file from a path and options
     *
     * @param Asset|string $filePath

Missing parameter comment

     * @param array $gifOptions

Expected 8 spaces after parameter type; 1 found

Missing parameter comment

     *
     * @return string
     * @throws InvalidConfigException
     */
    public function getGifFilename(Asset|string $filePath, array $gifOptions): string
    {
        $settings = Transcoder::$plugin->getSettings();
        $gifOptions = $this->coalesceOptions('defaultGifOptions', $gifOptions);

        // Get the video encoder presets to use
        $videoEncoders = $settings['videoEncoders'];
        $thisEncoder = $videoEncoders[$gifOptions['videoEncoder']];

        $gifOptions['fileSuffix'] = $thisEncoder['fileSuffix'];

        return $this->getFilename($filePath, $gifOptions);
    }

    /**
     * Handle generated a thumbnail for the Control Panel
     *
     * @param DefineAssetThumbUrlEvent $event

Missing parameter comment

     *
     * @return null|false|string
     * @throws InvalidConfigException
     */
    public function handleGetAssetThumbPath(DefineAssetThumbUrlEvent $event): null|false|string
    {
        $options = [
            'width' => $event->width,
            'height' => $event->height,
        ];
        return $this->getVideoThumbnailUrl($event->asset, $options);
    }

    // Protected Methods
    // =========================================================================

    /**
     * Returns a URL to an encoded GIF file (mp4)
     *
     * @param Asset|string $filePath path to the original video or an Asset

Expected 3 spaces after parameter name; 1 found

     * @param array $gifOptions of options for the GIF file

Expected 8 spaces after parameter type; 1 found

     *
     * @return string|false|null URL or path of the GIF file
     * @throws InvalidConfigException
     */

There must be no blank lines after the function comment

    public function getGifUrl(Asset|string $filePath, array $gifOptions): string|false|null
    {
        $result = '';
        $settings = Transcoder::$plugin->getSettings();
        $subfolder = '';

        // sub folder check
        if (($filePath instanceof Asset) && $settings['createSubfolders']) {
            $subfolder = $filePath->folderPath;
        }

        $filePath = $this->getAssetPath($filePath);

        if (!empty($filePath)) {
            // Dest path
            $destVideoPath = $settings['transcoderPaths']['gif'] ?? $settings['transcoderPaths']['default'];
            $destVideoPath .= $subfolder;
            $destVideoPath = App::parseEnv($destVideoPath);

            // Options
            $gifOptions = $this->coalesceOptions('defaultGifOptions', $gifOptions);

            // Get the video encoder presets to use
            $videoEncoders = $settings['videoEncoders'];
            $thisEncoder = $videoEncoders[$gifOptions['videoEncoder']];
            $gifOptions['fileSuffix'] = $thisEncoder['fileSuffix'];

            // Build the basic command for ffmpeg
            $ffmpegCmd = $settings['ffmpegPath']
                . ' -f gif'
                . ' -i ' . escapeshellarg($filePath)
                . ' -vcodec ' . $thisEncoder['videoCodec']
                . ' ' . $thisEncoder['videoCodecOptions'];


            // Create the directory if it isn't there already
            if (!is_dir($destVideoPath)) {

It seems like $destVideoPath can also be of type null; however, parameter $filename of is_dir() does only seem to accept string, maybe add an additional type check?

                try {
                    FileHelper::createDirectory($destVideoPath);
                } catch (Exception $e) {
                    Craft::error($e->getMessage(), __METHOD__);
                }
            }

            $destVideoFile = $this->getFilename($filePath, $gifOptions);

            // File to store the video encoding progress in
            $progressFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $destVideoFile . '.progress';

            // Assemble the destination path and final ffmpeg command
            $destVideoPath .= $destVideoFile;
            $ffmpegCmd .= ' '
                . ' -y ' . escapeshellarg($destVideoPath)
                . ' 1> ' . $progressFile . ' 2>&1 & echo $!';

            // Make sure there isn't a lockfile for this video already
            $lockFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $destVideoFile . '.lock';
            $oldPid = @file_get_contents($lockFile);
            if ($oldPid !== false) {
                // See if the process is running, and empty result means the process is still running
                // ref: https://stackoverflow.com/questions/3043978/how-to-check-if-a-process-id-pid-exists
                exec("kill -0 $oldPid 2>&1", $ProcessState);
                if (count($ProcessState) === 0) {
                    return $result;
                }
                // It's finished transcoding, so delete the lockfile and progress file
                @unlink($lockFile);
                @unlink($progressFile);
            }

            // If the video file already exists and hasn't been modified, return it.  Otherwise, start it transcoding
            if (file_exists($destVideoPath) && (@filemtime($destVideoPath) >= @filemtime($filePath))) {
                $url = $settings['transcoderUrls']['gif'] ?? $settings['transcoderUrls']['default'];
                $url .= $subfolder;
                $result = App::parseEnv($url) . $destVideoFile;
            } else {
                // Kick off the transcoding
                $pid = $this->executeShellCommand($ffmpegCmd);
                Craft::info($ffmpegCmd . "\nffmpeg PID: " . $pid, __METHOD__);

                // Create a lockfile in tmp
                file_put_contents($lockFile, $pid);
            }
        }

        return $result;
    }

    /**