document inaccurate read-duration

slhck · Aug 16, 2023 · d3b3c67 · d3b3c67
1 parent 7ade99d
commit d3b3c67
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -74,7 +74,9 @@ options:
                         or seconds) (default: None)
   -rd READ_DURATION, --read-duration READ_DURATION
                         Duration for sampling stream (in HH:MM:SS.msec or
-                        seconds) (default: None)
+                        seconds). Note that seeking is not accurate, see
+                        ffprobe documentation on '-read_intervals'. (default:
+                        None)
   -of {json,csv}, --output-format {json,csv}
                         output in which format (default: json)
   -p, --plot            Plot the bitrate over time (to STDERR) (default:

diff --git a/ffmpeg_bitrate_stats/__main__.py b/ffmpeg_bitrate_stats/__main__.py
@@ -96,7 +96,7 @@ def main() -> None:
         "--read-duration",
         type=str,
         default=None,
-        help="Duration for sampling stream (in HH:MM:SS.msec or seconds)",
+        help="Duration for sampling stream (in HH:MM:SS.msec or seconds). Note that seeking is not accurate, see ffprobe documentation on '-read_intervals'.",
     )
 
     parser.add_argument(