Definitely interested. One of the things I commonly do is take a video and cut out a few minutes here and there. I'd love to have a way to do that (visually) without having to reencode the entire video on output, but from my limited searching, I haven't seen any software that does that. Maybe there is a technical reason that isn't even possible. (Yes, I know it may have to create a new key frame at the beginning of a cut but the entire video?)
I've been using Kdenlive. It suffices, but figuring out parameters if you want more control over the rendered output than "I want an mp4" is much more difficult than it should be. (And at least one documented option throws a big warning "this probably doesn't do what you think it does" if I try to use it. And I still don't understand why the default value specified isn't the value you see, or get... Just been living with it.) On Wed, Oct 4, 2023 at 4:57 PM Michael L <[email protected]> wrote: > I'm up for it, after this coming Tuesday > > On Wed, Oct 4, 2023, 3:29 PM Vincent Brown < > [email protected]> wrote: > >> Would any of you guys that are experienced at editing video & sound in >> Linux consider doing some demos for an upcoming meeting. Doesn't >> necessarily have to be next week's meeting. This would make a great topic! >> >> On Tuesday, September 19, 2023 at 9:49:52 PM UTC-5 [email protected] >> wrote: >> >>> This is if you happen to know how far off the audio is from the video in >>> this case 3840 milliseconds or 3.84 seconds >>> >>> >>> *ffmpeg -i "movie.mp4" -itsoffset 3.84 -i "movie.mp4" -map 1:v -map 0:a -c >>> copy "movie-video-delayed.mp4"*Found this here: >>> https://superuser.com/questions/982342/in-ffmpeg-how-to-delay-only-the-audio-of-a-mp4-video-without-converting-the-au >>> >>> The hard part is knowing how far out of sync the audio is from the video, >>> but it's a quick change of the command line to experiment. >>> >>> I generally like to avoid re-encoding the video as Gibson mentioned. >>> Assuming you're not doing cinematography, a re-encode may give you more >>> options. >>> >>> >>> On Tue, Sep 19, 2023 at 9:32 PM Michael L <[email protected]> wrote: >>> >>>> 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/52485163-e399-49c9-8dca-631eb7a8f95an%40googlegroups.com >> <https://groups.google.com/d/msgid/nlug-talk/52485163-e399-49c9-8dca-631eb7a8f95an%40googlegroups.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/CALdmzXbJ6YMDVmVx%3DEvTROyZKsS%3DsZdUd9O82B3qs3JYsFmPdw%40mail.gmail.com > <https://groups.google.com/d/msgid/nlug-talk/CALdmzXbJ6YMDVmVx%3DEvTROyZKsS%3DsZdUd9O82B3qs3JYsFmPdw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. 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