Changes between Version 5 and Version 6 of FFprobeTips

Timestamp:

Jun 22, 2016, 12:44:19 AM (10 years ago)

Author:

llogan

Comment:

mentioned ffmpeg decoding for duration

FFprobeTips

@@ -150 +150 @@
 * `-v` sets the loglevel. `error` will omit the build and "generic" file information, but will allow errors to be shown in addition to the desired `ffprobe` output.
 * `-print_format` (or the alias `-of`) is useful to change the output format. Available formats are: default, compact, csv, flat, ini, json, xml.
+* You can use `nw=1:nk=1` instead of `noprint_wrappers=1:nokey=1` if you prefer.
 
 == Duration ==
 
-Format (container) duration:
+=== Format (container) duration ===
 
 {{{
@@ -166 +167 @@
 }}}
 
+=== Stream duration ===
+
 Duration of the first video stream:
 
@@ -172 +175 @@
 30.000000
 }}}
+
+=== Get duration by decoding ===
+
+You can also use `ffmpeg` to get the duration by fully decoding the file. The [https://ffmpeg.org/ffmpeg-formats.html#null null muxer] is used so no output file is created. Refer to `time=` in the next-to-last line of the console output. In this example the input has a duration of `00:57:28.87`.
+
+{{{
+$ ffmpeg -i input.webm -f null -
+...
+frame=206723 fps=1390 q=-0.0 Lsize=N/A time=00:57:28.87 bitrate=N/A speed=23.2x
+}}}
+
+* This method will report the correct duration in case the methods shown above using `ffprobe` are incorrect or missing due to corrupt, truncated, or damaged files.
+* The command may take some time depending on the input file duration and decoding complexity.
 
 == Frame Rate ==