how to change the default bitrate for video encoding

Where can I find the default bitrate for video encoding so I can change it? Because when I add video_bitrate option in ffmpeg options, it causes the video encoding to fail. The default 512k is making the 2160p videos distorted.

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    • Hello, in table sys_transcoder_filters I see this, then the bitrate would be 480?

      ('bx_albums_video_poster_big', 'Poster', 'a:2:{s:1:\"h\";s:3:\"480\";s:10:\"force_type\";s:3:\"jpg\";}', 0),
      ('bx_albums_video_mp4', 'Mp4', 'a:2:{s:1:\"h\";s:3:\"480\";s:10:\"force_type\";s:3:\"mp4\";}', 0),
      ('bx_albums_video_webm', 'Webm', 'a:2:{s:1:\"h\";s:3:\"480\";s:10:\"force_type\";s:4:\"webm\";}', 0),

      • The 480 is the resolution. Like 1080p or 4k. The default bitrate in UNA is 512kbps so if I change the 480p to something bigger, the videos will look more distorted instead of turning into beautifully clear 4k movies.

        In a previous post, Alex T⚜️ told me to use the code below, but the video_bitrate option is making the encoding for mp4 videos fail so I need to change the default bitrate in all of UNA so I don't need to use the video_bitrate option.

        a:3:{s:1:"h";s:4:"2160";s:10:"force_type";s:3:"mp4";s:14:"ffmpeg_options";a:2:{s:7:"threads";i:4;s:13:"video_bitrate";s:5:"2048k";}}

        EDIT: Here is the previous post => https://una.io/page/view-discussion?id=1627

        • Hello Genesis !

          You may try to use something like:

          a:3:{s:1:"h";s:4:"2160";s:10:"force_type";s:3:"mp4";s:14:"ffmpeg_options";a:2:{s:7:"threads";i:4;s:13:"video_bitrate";s:4:"128k";}}

          • L

            This features should be included in the new release of the UNA version 10.

            • I tried all that but this line is making the videos fail to encode:

                  'video_bitrate' => '128k',

              Where can I find the default bitrate in the UNA system itself without using this serialized transcoder filter so I can change the default bitrate for everything.

              • Ok I'm crazy. I found it in /inc/classes/BxDolTranscoderVideo.php. Is this the only code that I need to change to raise the 512 bitrate?

                Lines 156 -168:

                    protected function applyFilter_Mp4 ($sFile, $aParams)

                    {

                        return $this->_convertVideo($sFile, $sFile, '.mp4', $aParams, array (

                            'strict' => 'experimental',

                            'vcodec' => 'libx264',

                            's' => $this->_getOptionSizeForVideo ($sFile, $aParams),

                            'b:v' => isset($aParams['video_bitrate']) ? $aParams['video_bitrate'] . 'k' : '512k',

                            'movflags' => '+faststart',

                            'acodec' => 'aac',

                            'ar' => '44100',

                            'b:a' => isset($aParams['audio_bitrate']) ? $aParams['audio_bitrate'] . 'k' : '128k',

                        ));

                    }

                • When I upload a video it does work , just displays three large white dots? thoughts?

                  • Hi Mark!

                    First of all,  it is necessary to check if your Cron Jobs work, it can be done via Studio->Dashboard->Server Audit, the line Last Cron Jobs launch. So this time should be very very recent, almost right now.

                    • Hi, yes it is

                      • That all it displaysimage_transcoder.php?o=bx_froala_image&h=1373&dpx=2&t=1558777238

                        • So in the end did you get good results, if so, what settings did you change?

                          • 4k is too much for streaming so I used 1080p. I changed 512k to 4000k and then I updated the database with:

                            Serialized MySQL query:

                            UPDATE `sys_transcoder_filters` 

                              SET  `filter_params` =  'a:3:{s:1:"h";s:4:"1080";s:10:"force_type";s:3:"mp4";s:14:"ffmpeg_options";a:1:{s:7:"threads";i:14;}}' 

                              WHERE `transcoder_object` =  'bx_videos_video_mp4' AND  `filter` =  'Mp4';

                            Unserialized MySQL query:

                            array (

                              'h' => '1080',

                              'force_type' => 'mp4',

                              'ffmpeg_options' => 

                              array (

                                'threads' => 14,

                              ),

                            );

                            • Thank you

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