Avidemux alternative

[arrbee99 1551]

Am perfectly happy with Avidemux for chopping unnecessary bits off the beginning and end of recordings, except that when it saves the result it looses any subs. Anyone know of a simple (free...) alternative that'll keep subs intact ?

Thanks.

[arrbee99 1551]

Same problem - any thoughts anyone ?

[Luke 37007]

Maybe try with ffmpeg?

[arrbee99 1551]

I've done that. The only way I know how to do that to, say, remove some of the ending in a series is to find the right point in episode 1, edit my ffmpeg batch file, save it, run it for that one episode, find the right spot in episode 2, edit my fffpeg batch file again, save it, run it for that one file, etc etc.

[arrbee99 1551]

I got this off the interweb (I think). It uses fflmeg and will cut off x seconds from the front and y seconds from the end -

@Echo Off
SetLocal
Set "ext=mp4"
Set "opts=-v quiet"
Set "opts=%opts% -print_format "compact=print_section=0:nokey=1:escape=csv""
Set "opts=%opts% -show_entries "format=duration""
If Exist *.%ext% (If Not Exist "Trimmed\" MD Trimmed)
For %%a In (*.%ext%) Do Call :Sub "%%~a"
Exit/B

:Sub
For /f "Tokens=1* Delims=." %%a In (
    'FFProbe %opts% %1') Do (Set/A "ws=%%a-020.00" & Set "ps=%%b")
rem If %ws% Lss 20 GoTo :EOF
Set/A hh=ws/(60*60), lo=ws%%(60*60), mm=lo/60, ss=lo%%60
If %hh% Lss 10 Set hh=0%hh%
If %mm% Lss 10 Set mm=0%mm%
If %ss% Lss 10 Set ss=0%ss%
FFMpeg -i %1 -ss 00:00:10.0000 -to %hh%:%mm%:%ss%.%ps:~,3% -map 0:a? -map 0:s? -map 0:v -c:v copy -c:a copy -c:s copy "Trimmed\%~1"

It seems to mostly work except that it seems to not reset the length of the video properly. So, if you cut 10 seconds off the start and 20 off the end, then the resulting file is 10 seconds shorter, not 30. When played, it seems to cut the 10 seconds off the start and 20ish seconds off the end so near the end the video stops with the time line showing about 20 seconds still to go.

Now if I take that file and put it in Avidemux and just save it without doing anything to it, it magically gets about 20 seconds shorter, which would I guess be OK, except doing that looses the subtitles.

Don't suppose anyone knows why the .bat file above doesn't get the video length right ?

[arrbee99 1551]

Unless I'm very much mistaken, and i usually am, looks like Lossless-Cut might just possibly be the answer I'm looking for...

[jasonmcroy 315]

It may work for you. I have tried it and it will do the job, but you will get a warning when loading .ts files that it doesn't support them or something like that. It will still work, just may have to convert it after cutting. I have only tried a couple of files myself but went back to avidemux because it is much faster and I don't care about subtitles so never even knew it didn't retain them.

[arrbee99 1551]

I need to play some more but I think while Lossless-Cut will remove the beginning and end OK and keep the subtitles, it doesn't adjust the length properly, and when you try to fix up the length, the subtitles get lost...

Hopefully there's a good combination in there somewhere.

[visproduction 122]

On 12/23/2022 at 11:50 PM, arrbee99 said:

 

It seems to mostly work except that it seems to not reset the length of the video properly. So, if you cut 10 seconds off the start and 20 off the end, then the resulting file is 10 seconds shorter, not 30. When played, it seems to cut the 10 seconds off the start and 20ish seconds off the end so near the end the video stops with the time line showing about 20 seconds still to go.

 

Try remuxing the file using copy audio and video to reset the duration.