My father in law gave me a DVD video he recorded at work showing a sewer drain inspection/cleaning that has narration over it, but the volume is incredibly low so you can't hear the narration.
Do you guys know of a way to edit the .vob file so that I can increase the volume of the sound? (using free tools/resources).
End goal is to upload the video to YouTube, but it's worthless if I can't figure out this audio issue first.
Thanks so much!
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You could use audacity.
Open the vob in audacity with the ffmpeg plugin, http://manual.audacityteam.org/o/man/faq_installation_and_plug_ins.html#ffdown
Increase the audio volume with some filter.
Export to mp2 audio.
Multiplex the new audio with the vob using for example ImagoMPEG-Muxer. You add the vob and mp2 audio and make a new mpg.
Upload the new mpg file to youtube. If the video is interlaced you must probably fix it/deinterlace it before uploading to youtube.
Or you can convert DVD to MP4 for YouTube, to make more easy to upload with small file with VidCoder
in same time you can increase the volume
To increase the volume in VidCoder, go to Audio section and set Gain (db) from 0 to 20
please make preview file 30 sec clip, before encoding by pressing Preview button
set deinterlace in video filters if you see lines in preview clip
Last edited by roma_turok; 4th Nov 2013 at 12:51.
I also like XviD4PSP for this as in Audio->Processing Options you hit Apply and it automatically analyzes the audio and sets a gain. It may even get too loud and I set it for 90%. You can also set it to make an MP4 with AAC audio suitable for upload to YouTube.
You might also crop and resize it while you're in there, maybe to 640x480, as uploading 720x480 VOBs will show in YouTube in the wrong aspect ratio. Or add a formatting tag after uploading:
Examples of formatting tags
- yt:quality=high: Defaults to a high quality stream (available based on the size of the viewer’s player and the size of the browser window)
- yt:crop=16:9: Zooms in on the 16:9 area, removes windowboxing
- yt:stretch=16:9: Fixes anamorphic content by scaling to 16:9
- yt:stretch=4:3: Fixes 720x480 content that is the wrong aspect ratio by scaling to 4:3