I do video editing as part of my job. Suggestion #1: The Shotcut video editor allows you to separate the audio from video and add audio delay by moving the audio down the timeline from the video by 1 frame at a time or more. That's a tough and potentially time consuming way to get it exact, but maybe you can fix it that way and re render / export the file.
I'll search for another way with FFMPEG and let you know if I find it .. along with other info. On Tue, Sep 19, 2023 at 6:35 PM Curt Lundgren <[email protected]> wrote: > My brother sent me an MP4 file, about 900 MB, where the audio is at least > a second ahead of video. I'd like to process the file so lip sync is > proper, but my search engine fu is coming up short. ffmpeg seems like it > would have the capability, but I haven't found a clue in the documentation > or the man page. > > The video does not need to be changed in any way, but if possible, I'd > like to boost the audio gain by as much as 10 db. > > I'd prefer to do this on a Linux machine, something running from command > line would be ideal. Does anyone have a clue how this can be accomplished? > > Thanks > Curt Lundgren > > -- > -- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nlug-talk?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/nlug-talk/CADPPtrp%3Dqnd%3DzFSQXAxjNfPQfZALp1RaXve0tpgt0fCsVTxhiA%40mail.gmail.com > <https://groups.google.com/d/msgid/nlug-talk/CADPPtrp%3Dqnd%3DzFSQXAxjNfPQfZALp1RaXve0tpgt0fCsVTxhiA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en --- You received this message because you are subscribed to the Google Groups "NLUG" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/nlug-talk/CALdmzXaJV17j9V3kNFxxtgnvVYnGGDjppbF4Q9F%3DauVFyEnRBw%40mail.gmail.com.
