I have a movie in mp4 (x264 for video and 5.1 AAC for audio) format; when I played the movie on TV the audio dialogue volume was too low, I researched bit on the internet and found that if I convert the 5.1 audio to stereo, the situation would be better. So I used Xmedia Recode (https://www.xmedia-recode.de/) to convert the audio from 5.1 to Stereo using the following settings:
The resulting file sounds much much better on the TV, but I would like the dialogues to have a bit more volume; so I researched again and found that I need to “normalize” the volume of the movie file to a higher level. So again using Xmedia Recode, I analyzed the converted file and it had “Track Volume” of 80.4 dB. So I figured that I need to increase this volume level, so using the below settings on the original movie file:
The resulting file, when analyzed has a “Track Volume” of 95.6 dB instead of the expected 89 dB, why is that ? Also will the TV speakers be damaged if I use this movie file (with the 95.6dB volume)? the sound is not distorted in any way….
If it's a digital file, you have to find out what their reference level is. 95.6dB doesn't mean anything in and of itself for digital. What is 'track volume' exactly? You'll have to read the documentation.
Assuming you're just normalizing a movie file, you should be fine. Movies are generally -23LUFS with -1 or -2dB true peak; at least these days that's the standard. Normalizing just makes the highest peak reach 0dB Full Scale. Like you see, that isn't much - 6.6dB in your case.
Assuming -20dB RMS = 85dB C-weighted then you have a metric which makes sense. 85dB is the nominal 'room level' for playback. If that's the reference then your movie was 4dB above normal and now it's 10.6dB above normal. If your system isn't calibrated then it's virtually meaningless - your volume knob is your reference then.
It should be safe as long as you don't crank it to 10. If you do, it depends on the quality of your TV and whether it has limiters or such.