Differences

This shows you the differences between two versions of the page.

--- ffprobe:frame:count_number_of_frames [2025/05/27 09:18] – peter
+++ ffprobe:frame:count_number_of_frames [2025/05/27 09:20] (current) – peter
@@ Line 26: / Line 26: @@
 <WRAP important>
-**WARNING:** Often returns N/A, not reliable.
+**WARNING:** Fast, but often returns N/A, not reliable.
 </WRAP>
+----
+<code bash>
+ffprobe -count_frames -select_streams v:0 -show_entries stream=nb_read_frames -of default=nokey=1:noprint_wrappers=1 input.mp4
+</code>
+<WRAP important>
+**WARNING:**  Pretty slow, can take a minute for longer videos.
+</WRAP>
+----
+<code bash>
+ffmpeg -i input.mp4 -map 0:v:0 -c copy -f null -
+</code>
+<WRAP important>
+**WARNING:**  Needs to fully decode video once, which is rather slow.
+</WRAP>
 ----