[FFmpeg-user] Removing parts of a video using the select filter

[Steven Kan]

I’m a little late to this party, and it’s not strictly an ffmpeg solution, but have a look at Lossless Cut:

https://mifi.no/losslesscut/

It does exactly what you want, graphically, with the option to cut at key frames (or not), includes audio, can concatenate, is free, and uses ffmpeg under the hood, thus making it on-topic for this list. 
--
Sent from my iPhone
Steven Kan
+1-818-620-3062 (m)

> On Jan 9, 2022, at 3:48 AM, Simon van Bernem via ffmpeg-user <ffmpeg-user at ffmpeg.org> wrote:
> 
> 
> 
> My specific usecase is removing multiple parts
> 
> of a video. So e.g. I want to "remove the part
> 
> from 0:10 to 0:15 and the part from 1:15 to 4:10 and the part from 10:00 to the end".
> 
> How would that look like with this approach?
> 
> Can you have multiple -ss and -to pairs?
> 
> Can you express to discard a section, not keep
> 
> it?
> 
> 
> 
> Regards,
> 
> Simon
> 
> 
> 
> 
> 
> 
> 
> 
>> 
>> Am 09.01.2022 in 12:39, Stephen Liu via ffmpeg-user  <ffmpeg-user at ffmpeg.org>  schrieb:
>> 
>> 
>> Hi, 
>> I run following command on Terminal to trim a section of the video (for VCD video):- 
>> $ ffmpeg -i imput.VOB -target pal-vcd -ss 00:02:10 -to 00:03:18 -c:v copy -c:a copy output.VOB 
>> 
>> -ss starting time (hrs:min:sec) 
>> -to stop time (hrs:min:sec) 
>> 
>> This command line works for me seamlessly. 
>> 
>> Regards 
>> 
>> On Sunday, January 9, 2022, 06:43:39 PM GMT+8, MacFH - C E Macfarlane - News  <news at macfh.co.uk>  wrote: 
>> 
>>> On 08/01/2022 23:43, amindfv--- via ffmpeg-user wrote: 
>>> 
>>> On Sat, Jan 08, 2022 at 08:20:46PM +0000, MacFH - C E Macfarlane - News wrote: 
>>>> 
>>>> To select parts of a video, I use ... 
>>>> 
>>>> FFMPEG -ss  <start-time>  -i  <input>  -codec copy -to  <end>   <output>  
>>>> 
>>>> ... however it's tedious, because with this method the video will only break 
>>>> at certain points between compression units (can't remember the proper 
>>>> terminology), and it can take some experimentation to find the precise 
>>>> timing of these to get the audio right as well, and often, because of the 
>>>> way the compression works, the first extracted frame is often an unwanted 
>>>> last frame of a previous scene. 
>>>> 
>>>> I have long lamented that FFMPEG doesn't make this both easier and to allow 
>>>> greater resolution, if necessary recreating the start and end compression 
>>>> units to get the exact timing wanted. 
>>> 
>>> If you get rid of the "-codec copy" you can have any precision you'd like. 
>> 
>> But the entire video will be re-encoded, which is undesirable because, 
>> as the codecs use lossy compression, there will be further degradation 
>> of the entire video clip just gain some precision at each end. 
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