Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-25 Thread Bo Berglund
On Mon, 25 Mar 2024 07:04:37 +0100, Bo Berglund wrote: >I found the syntax as an example at > >http://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video > > >so I made a test. > >Note: Newsreader is doing the line wrap, it is on a single line of course: > >ffmpeg

Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-25 Thread Michael Koch
Am 24.03.2024 um 23:30 schrieb Bo Berglund: But is it possible also to modify an mp4 video file to *play* faster/slower than original while keeping the accompanying audio pitch the same? It's possible to change audio length, sample rate and pitch, and also all combinations of these three

Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-25 Thread Bo Berglund
On Mon, 25 Mar 2024 01:47:27 +0100, Paul B Mahol wrote: >On Mon, Mar 25, 2024 at 12:54?AM Laine Lee wrote: > >> >> >> > On Mar 24, 2024, at 5:31?PM, Bo Berglund wrote: >> > >> > ?I know how to use ffmpeg to adjust the video/audio sync and that is a >> real >> > simple command not requiring any

Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-24 Thread Paul B Mahol
On Mon, Mar 25, 2024 at 12:54 AM Laine Lee wrote: > > > > On Mar 24, 2024, at 5:31 PM, Bo Berglund wrote: > > > > I know how to use ffmpeg to adjust the video/audio sync and that is a > real > > simple command not requiring any remuxing or such. This is what I use in > my > > audiosync script

Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-24 Thread Laine Lee
> On Mar 24, 2024, at 5:31 PM, Bo Berglund wrote: > > I know how to use ffmpeg to adjust the video/audio sync and that is a real > simple command not requiring any remuxing or such. This is what I use in my > audiosync script and it runs very fast: > > ffmpeg -i $SOURCEFILE -itsoffset $DELAY

[FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-24 Thread Bo Berglund
I know how to use ffmpeg to adjust the video/audio sync and that is a real simple command not requiring any remuxing or such. This is what I use in my audiosync script and it runs very fast: ffmpeg -i $SOURCEFILE -itsoffset $DELAY -i $SOURCEFILE -map 1:v -map 0:a -c copy $TARGETFILE But is it