Re: [FFmpeg-user] Hello, I want to ask about sending very long argument into ffmpeg command line.
> I have to split one video into large amount(usually more than 1000) of > segments and reassemble segments into one video. > Suppose I try split only, then command will be like > > ffmpeg -i input.mp4 -vcodec copy -acodec copy -ss 00:00:00 -t 00:01:00 -sn > test_split001.mp4 -vcodec copy -acodec copy -ss 00:01:00 -t 00:02:00 -sn > test_split002.mp4 -vcodec copy -acodec copy -ss 00:02:00 -t 00:13:50 -sn > test_split003.mp4 -vcodec copy -acodec copy -ss 00:13:50 -t 00:19:27 -sn > test_split004.mp4 ... > Currently I am sending just one command per extraction to the kernel, because > kernel doesn't accept if given command is too long. > Since I am making too many segments, efficiency is way too low. > > This is why I asked you about modifying main(generating command arguments > inside of main function). Did my answer cleared your question? Oh okay, in that case, have a look at the segment muxer and concat "demuxer". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Hello, I want to ask about sending very long argument into ffmpeg command line.
Ok, let me explain in details. I have to split one video into large amount(usually more than 1000) of segments and reassemble segments into one video. Suppose I try split only, then command will be like ffmpeg -i input.mp4 -vcodec copy -acodec copy -ss 00:00:00 -t 00:01:00 -sn test_split001.mp4 -vcodec copy -acodec copy -ss 00:01:00 -t 00:02:00 -sn test_split002.mp4 -vcodec copy -acodec copy -ss 00:02:00 -t 00:13:50 -sn test_split003.mp4 -vcodec copy -acodec copy -ss 00:13:50 -t 00:19:27 -sn test_split004.mp4 ... Currently I am sending just one command per extraction to the kernel, because kernel doesn't accept if given command is too long. Since I am making too many segments, efficiency is way too low. This is why I asked you about modifying main(generating command arguments inside of main function). Did my answer cleared your question? Thanks for reading this, Minsung Kim -Original Message- From: "Ted Park" To: "FFmpeg user questions"; Cc: Sent: 2019-11-05 (화) 15:54:16 (GMT+09:00) Subject: Re: [FFmpeg-user] Hello, I want to ask about sending very long argument into ffmpeg command line. > Hello. My name is Minsung Kim, I want to ask about sending very long > arguments into ffmpeg command line. > > Since Linux kernel can't handle very long arguments, I am thinking steps > below. > > - Rename current "main" function from source code to "main2". > - Make new "main" function, and generate long arguments in that function. > - Pass that arguments into main2. > > Is this a good way to solve it? If I have to change more part of code, where > should I change it? What are the “very long arguments”? If most of it’s a filter chain you can separate that into a file. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Hello, I want to ask about sending very long argument into ffmpeg command line.
> Hello. My name is Minsung Kim, I want to ask about sending very long > arguments into ffmpeg command line. > > Since Linux kernel can't handle very long arguments, I am thinking steps > below. > > - Rename current "main" function from source code to "main2". > - Make new "main" function, and generate long arguments in that function. > - Pass that arguments into main2. > > Is this a good way to solve it? If I have to change more part of code, where > should I change it? What are the “very long arguments”? If most of it’s a filter chain you can separate that into a file. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
