Re: [FFmpeg-user] How to deal long length of options on some arguments?

2019-12-05 Thread Carl Zwanzig

On 12/5/2019 6:50 PM, 김민성 wrote:

As I said in email, -segment_time will split all segments have same length.
I want to split video segments non-uniformly, which requires additional
cutting and merging steps if I use -segment_time.
Actually, I don't think you said that. A clear definition of the problem is 
always helpful.


You may find it more workable to use a frame-server and pull the number of 
frames you want for each segment and reassemble them.


Also, please don't top-post on this list.

Late,r

z!
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Re: [FFmpeg-user] How to deal long length of options on some arguments?

2019-12-05 Thread 김민성
As I said in email, -segment_time will split all segments have same length. 
I want to split video segments non-uniformly, which requires additional cutting 
and merging steps if I use -segment_time.
 
Thank you.
Minsung Kim
 
 
 
-Original Message-
From: "Carl Zwanzig"
To: ;
Cc:
Sent: 2019-12-06 (금) 09:53:06 (GMT+09:00)
Subject: Re: [FFmpeg-user] How to deal long length of options on some arguments?
 

Is there a specific reason to specify the absolute segment starts? It seems
like the process would be much easier if you use -segment_time instead.

Later,

z!


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Re: [FFmpeg-user] How to deal long length of options on some arguments?

2019-12-05 Thread Carl Zwanzig


Is there a specific reason to specify the absolute segment starts? It seems 
like the process would be much easier if you use -segment_time instead.


Later,

z!


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[FFmpeg-user] How to deal long length of options on some arguments?

2019-12-05 Thread 김민성
Hello.
 
I am trying to set command like below:
 
ffmpeg -i in.mp4 \
-force_key_frames [verymanycheckpoints] \ 
-segment_times [verymanycheckpoints] \
-segment_list segmentlist.txt \
-f segment \
-reset_timestamps 1 \
out%03d.mp4 \
 
Current bottleneck is "[very...many...checkpoints]", which is possibly can be 
very long argument.
 
Using trim filter for splitting many segments is impossible. (ffmpeg runs out 
of memory, I think)
Therefore, I think I have to use segment muxer to split video non-uniformly.
 
But every OS have character limits for single command, which is vulnerable for 
people like me(who can potentially make 10,000+ segments).
 
How can I pass option "segment_times" and "force_key_frames" by file?
(If it's impossible, I can split video uniformly and cut again from those 
fragments anyway, but I would be happy if there is any direct straightforward 
way to handle this issue.)

Thanks for reading this.
Minsung Kim
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