[FFmpeg-user] Trying to cut 5 sec of beginning and ending of mp4 files

[tsh at tshilton.com]

Thanks, I have tried the commands to get the duration, but it seems that I need Grep and cut to work, which I come to find out are Linux commands and
I am on windows.  I am not searching to find a way to run Linux in one window of my dual screen Win7 system so I can share files between Win7 and Linux.

Tom

-----Original Message-----
From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of littlebat
Sent: Monday, January 18, 2016 6:15 PM
To: FFmpeg user questions
Subject: Re: [FFmpeg-user] Trying to cut 5 sec of beginning and ending of mp4 files

On Mon, 18 Jan 2016 15:54:14 -0700
<tsh at tshilton.com> wrote:

> Hi
> I have made some headway.  I am using this command line:
> for %%a in ("*.mp4") do ffmpeg -ss 00:00:10 -i  "%%a" -codec copy 
> "newfiles\%%~na.mp4" which does seem to cut out the first 10 seconds 
> of the 100 MPG4 files I have tried.  Now if I can only figure out how 
> to cut out the last 5 seconds.  Remember these mpeg files are varying 
> lengths varying from 24 minutes to 1 hr 20 minutes.
> 

Use script calculate the total length of the file, reduce the last 5 seconds, you can get the cuted file.

> Again any help would be appricated.
> PS I am see an undetermined length message at the end of each file run 
> in the bat file.  It seems To add about 5 or so seconds before showing 
> the last 20 frames the best I can tell.  These last 20 frames is what 
> I would like to get removed from the MP4 file that I already converted 
> with The above command line.

Show your uncut console output. If you can't determine the length of the file, maybe something wrong in you file, so maybe there is trouble to finish your task.

Or, maybe you should try the lastest version of ffmpeg.

> 
> Thanks
> Thomas
> 
> -----Original Message-----
> From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of 
> tsh at tshilton.com Sent: Monday, January 18, 2016 1:52 PM
> To: ffmpeg-user at ffmpeg.org
> Subject: [FFmpeg-user] Trying to cut 5 sec of beginning and ending of
> mp4 files
> 
> Hi
> 
> I am been trying almost every combination of switches to be able to 
> cut 5 sec from the start and 5 sec from the ending of variable length
> mp4 files.
> 
> I have not been successful at doing either.  I guess I really don't 
> understand the usage.  I have more than 100 files to do.
> 
> Can anyone suggest a command string that will work?
> 
>  
> 
> Thanks
> 
> Thomas
> 
>  
> 
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