FFMPEG not “cutting” as expected in Android

问题

I referred FFMPEG not "cutting" as expected to split video in chunks in below format:

00:00:00 - 00:00:01

00:00:01 - 00:00:02

00:00:02 - 00:00:03

00:00:03 - 00:00:04

00:00:04 - 00:00:05

Here is the command i used:

String[] cmd1 = new String []{"-ss", "00:00:00.000", "-i", inputVideoUrl, "-t", "00:00:01.000", "-c:v", "libx264", "-strict", "-2", outputPath};

String[] cmd2 = new String []{"-ss", "00:00:01.000", "-i", inputVideoUrl, "-t", "00:00:02.000", "-c:v", "libx264", "-strict", "-2", outputPath};

String[] cmd3 = new String []{"-ss", "00:00:02.000", "-i", inputVideoUrl, "-t", "00:00:03.000", "-c:v", "libx264", "-strict", "-2", outputPath};

String[] cmd4 = new String []{"-ss", "00:00:03.000", "-i", inputVideoUrl, "-t", "00:00:04.000", "-c:v", "libx264", "-strict", "-2", outputPath};

String[] cmd5 = new String []{"-ss", "00:00:04.000", "-i", inputVideoUrl, "-t", "00:00:05.000", "-c:v", "libx264", "-strict", "-2", outputPath};

And i use this library: https://github.com/teanersener/mobile-ffmpeg

implementation 'com.arthenica:mobile-ffmpeg-full-gpl:4.2.2.LTS'

When i execute i get the duration starting from beginning of the video all the time. Please suggest what am i doing wrong, i searched and tried changing commands but nothing works.

00:00:00 - 00:00:01

00:00:00 - 00:00:02

00:00:00 - 00:00:03

00:00:00 - 00:00:04

00:00:00 - 00:00:05

Let me share another example to explain my requirement: inputVideoUrl contains a video of any length(ex: 5min) I want to cut a user selected portion of it(ex first one minute) in the form of 5 split videos.

split 1: 00 sec - 12.0sec

split 2: 12.1 sec - 24.0sec

split 3: 24.1 sec - 36.0sec

split 4: 36.1 sec - 48.0sec

split 5: 48.1 sec - 60.0sec

And later i will provide these split videos to a player playlist.

回答1:

Use the segment muxer

You can do everything with one command with the segment muxer:

ffmpeg -i input -c:v libx264 -c:a aac -f segment -segment_time 1 -force_key_frames "expr:gte(t,n_forced*1)" -reset_timestamps 1 output_%03d.mp4

The numerical value in expr:gte(t,n_forced*1) should equal the -segment_time value (which is 1 in this example).

来源：https://stackoverflow.com/questions/65403348/ffmpeg-not-cutting-as-expected-in-android