Hi, I was editing a music video of my band, and I realized that the audio volume is not the same as the .wav file that I’ve imported, I thing that the quality is not the same also, when I try to increase the volume with the gain audio filters it quickly get distorted. Does any know how to keep exactly the same volume and quality when import an audio file?
Thanks.
Shotcut does not do any automatic audio adjustments. So, the answer it is already at the best quality possible upon import without you having to do anything, and you may be somehow deceived. Perhaps the volume slider on the player controls is set different from 0 dB.
Suggestions:
Hi, thanks for your answer, Im pretty shure that the volume goes down after import the audio file, I’ve checked the volume control and it is in 0db, for now Im increasing the volume using ffmpeg after the edition and it works, but it may be something wrong in shotcut.
Hi Brian, I’ve done all the suggestions you mention but the same thing is happening, 
Would it be possible for you to share your file so that others can try it. Maybe we can figure out what is going wrong.
I’ve noticed the same with both mp3 and wav but for me it gets resolved after export. (at least I feel like its resolved, I don’t notice a difference from the original audio and exported audio)
I can’t speak for quality, but audio is lower.
I export from Audacity to my computer as a WAV file. Guess I’m missing something from my computer to be able to export as MP3. Once on my computer I upload the WAV file to Shotcut and export back to my computer as MP3. I make no edits, just upload and export. When I listen to the new MP3 file at Audacity the volume is lower and I sometimes have to boost it a bit to bring it back to what I had before.
Shotcut does not support ReplayGain metadata, which is included in some audio files.
This thread provides very little data or evidence to support the claims. Hardly any steps provided either. Here is mine to refute the claim. SoX is a popular audio utility that I will use to report level information.
Starting with an input WAV file I already had:
ddennedy@MS-7593:~/Music$ sox Amy\ Dennedy/amy.wav -n stat
Samples read: 618508
Length (seconds): 6.442792
Scaled by: 2147483647.0
Maximum amplitude: 0.707123
Minimum amplitude: -0.636414
Midline amplitude: 0.035355
Mean norm: 0.122580
Mean amplitude: -0.000003
RMS amplitude: 0.154607
Maximum delta: 0.133057
Minimum delta: 0.000000
Mean delta: 0.005946
RMS delta: 0.011994
Rough frequency: 592
Volume adjustment: 1.414
Open that in Shotcut, add it to the Timeline, use the WAV export preset, and analyze that:
ddennedy@MS-7593:~/Music$ sox ~/Videos/tests/test.wav -n stat
Samples read: 618240
Length (seconds): 6.440000
Scaled by: 2147483647.0
Maximum amplitude: 0.707092
Minimum amplitude: -0.636383
Midline amplitude: 0.035355
Mean norm: 0.122602
Mean amplitude: -0.000003
RMS amplitude: 0.154617
Maximum delta: 0.133057
Minimum delta: 0.000000
Mean delta: 0.005948
RMS delta: 0.011995
Rough frequency: 592
Volume adjustment: 1.414
As you can see there is very little difference.
In my case I’m uploading a WAV file to Shotcut and then exporting it as a MP3 file, not exporting it as a WAV file. Doubt that makes any difference, but thought I’d mention it for clarity.
Same difference with MP3 more or less:
ddennedy@MS-7593:~/Music$ sox ~/Videos/tests/test.mp3 -n stat
Samples read: 622080
Length (seconds): 6.480000
Scaled by: 2147483647.0
Maximum amplitude: 0.707080
Minimum amplitude: -0.636347
Midline amplitude: 0.035366
Mean norm: 0.121846
Mean amplitude: -0.000003
RMS amplitude: 0.154139
Maximum delta: 0.133009
Minimum delta: 0.000000
Mean delta: 0.005911
RMS delta: 0.011958
Rough frequency: 592
Volume adjustment: 1.414
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