Differences

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--- ffprobe:video:rotate [2025/01/13 10:01] – created peter
+++ ffprobe:video:rotate [2025/01/13 10:20] (current) – peter
@@ Line 1: / Line 1: @@
 ====== ffprobe - Video - Rotate ======
+To detect whether videos are recorded in portrait or landscape mode.
+===== Video orientation detection =====
 <code bash>
 ffprobe -v error -select_streams v:0 -show_entries stream_tags=rotate -of csv=s=x:p=0 input.mp4
 </code>
+<WRAP info>
+**NOTE:**  On unrotated videos, the above command produces no output.
+</WRAP>
 ----
+==== Getting Width, Height, Rotation ====
 <code bash>
-rotate=$(ffprobe -v error -select_streams v:0 -show_entries stream_tags=rotate -of csv=s=x:p=0 "${sourceFile}")
+ffprobe -v error -select_streams v:0 -show_entries stream=width,height:stream_tags=rotate -of csv=p=0 input.mp4
-if [ "$rotate" != "" ]; then
-    echo "We need to rotate: $rotate"
-fi
 </code>
+returns:
+<code bash>
+,1080,270
+</code>
+<WRAP info>
+**NOTE:**  Even though the rotation here is 270, the width and height are still shown as if the orientation was portrait.
+  * Due to the 270 rotation, in reality the actual input should be 1080x1920, and not 1920x1080.
+    * But ffprobe reports the actual width x height; Width is displayed first, then height (no matter the order it is requested).
+</WRAP>
 ----
-===== With Grep =====
+===== Using Grep =====
 <code bash>
@@ Line 27: / Line 50: @@
 rotate          : 90
 </code>
+----
+===== In a Bash Script =====
+<code bash>
+rotate=$(ffprobe -v error -select_streams v:0 -show_entries stream_tags=rotate -of csv=s=x:p=0 "${sourceFile}")
+if [ "$rotate" != "" ]; then
+    echo "We need to rotate: $rotate"
+fi
+</code>
+----