Added autoloader to plugin loader, executor improvements

2017-02-11 23:37:35 +01:00
parent 0ca1da06e7
commit a3f8728d9d
10 changed files with 474 additions and 181 deletions
--- a/presets/executor/executor-scenesplit.yml
+++ b/presets/executor/executor-scenesplit.yml
@ -0,0 +1,111 @@
+preset:
+    name: Split video on black frames (ffmpeg)
+    group: video
+    plugin: executor
+    props:
+        set:
+            scenes: { value:"{%uinput}.tmp", escape:true }
+        script:
+            analyze:
+                info: Finding scenes
+                exec: "ffmpeg -i {%input} -vf blackframe=amount=90:thresh=64 -f null -"
+                parse: { from: 'stderr', regex: '/^frame=[\s]*([0-9]+)\s/', frame:1 }
+                extract:
+                    # Write everything matching '[Parsed_blackframe' to file
+                    - { from: 'stderr', regex: '/^\[Parsed_blackframe/', write:'{%scenes}' }
+            split:
+                info: Splitting video
+                call: scenesplitter
+            cleanup:
+                info: Cleaning up
+                exec: "rm {%scenes}"
+        helpers:
+            scenesplitter: |
+                /*
+                * This is what the contents of %scenes look like:
+                *
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1312 pblack:100 pts:1313312 t:43.777067 type:P last_keyframe:1290
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1313 pblack:99 pts:1314313 t:43.810433 type:P last_keyframe:1290
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1314 pblack:99 pts:1315314 t:43.843800 type:P last_keyframe:1290
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1315 pblack:99 pts:1316315 t:43.877167 type:P last_keyframe:1290
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1316 pblack:99 pts:1317316 t:43.910533 type:P last_keyframe:1290
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1317 pblack:99 pts:1318317 t:43.943900 type:P last_keyframe:1290
+                * [Parsed_blackframe_0 @ 0x54f7960] frame:1318 pblack:99 pts:1319318 t:43.977267 type:P last_keyframe:1290
+                *
+                * Pick the split point as the last frame in a block with the highest percentage of black pixels, in this case
+                * it would be on the first line as it has pblack=100 for a single frame.
+                */
+
+                if (!file_exists({{%scenes}})) {
+                    return;
+                }
+
+                $frames = file({{%scenes}}, FILE_IGNORE_NEW_LINES);
+
+                $chunks = [];
+
+                // Split into chunks of blackish frames
+                $chunk = [];
+                $last_frame = 0;
+                foreach ($frames as $frame) {
+                    if (preg_match('/frame:(\d+) pblack:(\d+) pts:(\d+) t:([\d\.]+) type:(.+) last_keyframe:(\d+)$/', $frame, $info)) {
+                        list ($void, $_frame, $_pblack, $_pts, $_t, $_type, $_last_keyframe) = $info;
+                        if ($_frame > $last_frame+1) {
+                            // Add the chunk if its a new block
+                            if (count($chunk)>0) {
+                                $chunks[] = $chunk;
+                                $chunk = [];
+                            }
+                        }
+                        // Store chunk data
+                        $chunk[] = (object)[
+                            'frame' => $_frame,
+                            'pblack' => $_pblack,
+                            'time' => $_t
+                        ];
+                        $last_frame = $_frame;
+                    }
+                }
+                // Save the last chunk
+                if (count($chunk)>0) {
+                    $chunks[] = $chunk;
+                }
+
+                // Process chunks and find best split points
+                $last_time = 0;
+                $scenes = [];
+                foreach ($chunks as $chunk) {
+                    // Find split
+                    $best_black = 0; $best_time = 0;
+                    foreach ($chunk as $frame) {
+                        if ($frame->pblack >= $best_black) {
+                            $best_black = $frame->pblack;
+                            $best_time = $frame->time;
+                        }
+                    }
+                    $scenes[] = [ $last_time, $best_time ];
+                    $last_time = $best_time;
+                }
+
+                // Split it up
+                $input = {{%input}};
+                $output = {{%output}};
+
+                $outdir = dirname($output);
+                $outext = pathinfo($output, PATHINFO_EXTENSION);
+                $outfile = basename($output, ".{$outext}");
+
+                foreach ($scenes as $_index=>$scene) {
+                    list($_start,$_end) = $scene;
+                    $_duration = $_end-$_start;
+                    $cmdl = sprintf("ffmpeg -ss %s -i '%s' -t %s -codec copy '%s/%s-%d.%s' 2>/dev/null", 
+                        $_start, 
+                        $input, 
+                        $_duration, 
+                        $outdir, $outfile, $_index+1, $outext
+                    );
+                    printf("Exec: %s\n", $cmdl);
+                    exec($cmdl, $out, $ret);
+                }
+
+