Differences

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--- regie:regie_video [2021/04/19 15:05] – [Caractéristiques] mh
+++ regie:regie_video [2022/11/07 11:23] (current) – [Caractéristiques] mh
@@ Line 28: / Line 28: @@
     *Couplé à des fonctions de zoom, définit les portée minimale/maximale de projection.
+==== Options / Traitement d'image ====
+   ***Overscan :** Une partie de l'image sur les bords est coupée et l'image est très légèrement agrandie par rapport à la source.
+----
 ===== NDI =====
@@ Line 40: / Line 44: @@
   * MadMapper
   * mplayer (pour lecture vidéo)
+  * Millumine
+  * QLab
+  * Modulo Kinetic / Modulo Player
-===== Transcodage Vidéo =====
+----
+===== FFMPEG =====
-De manière générale ''ffmpeg'' permet de faire directement en ligne de commandes des ré-encodages
+=== Re-encode into Apple Pro Res ===
-=== Ré-Encoder un fichier en Apple Pro Res ===
 <code bash>
 $ffmpeg -i input.mp4 -vcodec prores -acodec copy output.mov
 </code>
+=== Rotate video ===
+<code bash>
+$ffmpeg -i input-video.mp4 -vf "transpose=1" output-video.mp4
+</code>
+  *0 – means rotate by 90 degrees counterclockwise and flip
+  *1 – means rotate by 90 degrees clockwise
+  *2 – means rotate by 90 degrees counterclockwise
+  *3 – means rotate by 90 degrees clockwise and flip
+=== Control Quality ===
+The CRF option sets the encode quality. The bit-rate will vary as necessary to provide a consistent quality throughout the video. 51 being the worst to 0 being the best (lossless). Usually around 15-20 is a good ratio quality vs filesize.
+You can use the ''-ss'' (start timecode in seconds) and ''-t'' (duration in seconds) options to create short test encodes.
+To create a 1min clip starting 1min into the video:
+<code bash>
+$ffmpeg -i input-video.mp4 -c:v libx264 -c:a -crf 15 aac -ss=60 -t=60 output-video.mp4
+</code>
 === ffmpeg commands ===
@@ Line 79: / Line 109: @@
 $ffmpeg -h encoder=libx264 //list all options on encoder
 </code>
+===== SDI & bitrates =====
+{{regie:video_formats_bitrates.png?500}}
 ===== Ressources =====