1 files changed, 32 insertions, 0 deletions

diff --git a/server/lib/video-studio.ts b/server/lib/video-studio.ts
new file mode 100644
index 000000000..cdacd35f2
--- /dev/null
+++ b/server/lib/video-studio.ts
@@ -0,0 +1,32 @@
+import { MVideoFullLight } from '@server/types/models'
+import { getVideoStreamDuration } from '@shared/extra-utils'
+import { VideoStudioTask } from '@shared/models'
+
+function buildTaskFileFieldname (indice: number, fieldName = 'file') {
+  return `tasks[${indice}][options][${fieldName}]`
+}
+
+function getTaskFile (files: Express.Multer.File[], indice: number, fieldName = 'file') {
+  return files.find(f => f.fieldname === buildTaskFileFieldname(indice, fieldName))
+}
+
+async function approximateIntroOutroAdditionalSize (video: MVideoFullLight, tasks: VideoStudioTask[], fileFinder: (i: number) => string) {
+  let additionalDuration = 0
+
+  for (let i = 0; i < tasks.length; i++) {
+    const task = tasks[i]
+
+    if (task.name !== 'add-intro' && task.name !== 'add-outro') continue
+
+    const filePath = fileFinder(i)
+    additionalDuration += await getVideoStreamDuration(filePath)
+  }
+
+  return (video.getMaxQualityFile().size / video.duration) * additionalDuration
+}
+
+export {
+  approximateIntroOutroAdditionalSize,
+  buildTaskFileFieldname,
+  getTaskFile
+}