Measuring video volume level at any chosen point

[rowjekto]

Which tool should I use for it?

[raffriff42]

It depends on what you want to do, and what software you prefer to work with.

https://ffmpeg.org/ffmpeg-all.html#ebur128-1
"EBU R128 scanner filter. This filter takes an audio stream as input... logs a message at a frequency of 10Hz with the Momentary loudness (identified by M), Short-term loudness (S), Integrated loudness (I) and Loudness Range (LRA). "


I prefer to use AviSynth myself:
http://avisynth.nl/index.php/Histogram#Audiolevels_mode
"Shows the audio levels in decibels for each channel present. For example, if the source has six channels of audio, six vertical bars will be shown. "

For logging per-frame audio levels to a file, there's the MinMaxAudio plugin. (download) (discussion)

[rowjekto]

It depends on what you want to do, and what software you prefer to work with.

What I'm looking for is a software where you can load the video and get data about the volume levels while watching.

[JVRaines]

I use the free Orban Loudness Meter which can be configured to monitor any audio device on the computer.

[jagabo]

Many media players include a VU meter visualization.

[Cornucopia]

What are you wanting this for?

Scott

[rowjekto]

What are you wanting this for?

Scott

I use FFmpeg filter dynaudnorm (Dynamic Audio Normalizer) for movies, and would like to measure the dialogue volume levels in some scenes, in order to set the maximum gain factor, the less value (as possible) - the better.

[Budman1]

Would something like this work using EBU r128 as RaffRiff42 suggested and the output overlay-ed by the actual video? Frame by Frame is displayed at the top as well as the frame number. This corresponds to the Bar graph at the right with representaion showing later in the Larger bar graph area.


[Attachment 45105 - Click to enlarge]