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1. #FFMPEG CUT VIDEO FROM TIME TO TIME HOW TO#
2. #FFMPEG CUT VIDEO FROM TIME TO TIME DOWNLOAD#
3. #FFMPEG CUT VIDEO FROM TIME TO TIME WINDOWS#

long winded answer given but short answer is yes it was changed for a fact because I had two different version in different location on my computer and it caused me no end of trouble trying to figure out why the timestamp was positive one time and negative another when I used the same script. So I made a bash file that executes multiple ffmpeg commands like this. But FFprobe reports it as 8+ seconds Code: ffmpeg -i cgop.mp4 -ss 327.127127 -t 8.341750 -c copy output. The only stable effect is -SS as Input or Output option are basically frame accurate (input reset timestamp to 0.000000) and Input seeks to the PRECEDING Key Frame and Output seeks to the FOLLOWING Key Frame. For the project that I'm working on I have to cut some parts of same video with some subtitles. ffmpeg -ss 327.127127 -i cgop.mp4 -to 8.341750 -c copy output.mp4 will play a 16 second video (even though it is supposed to be 8.341750 seconds long) from approximately the 318.785452 I-Frame up to the 335.468802 I-Frame. Using FFprobe to get the exact frame timestamp and then trying to cut from exactly on the I-Frame and then each preceding frame, frame by frame before the Key yields drastically different different almost every time. Otherwise the results are different depending on where you cut between Key Frames. There is a method that I will post later after I get it written up, where you can use a peculiar method to cut EXACTLY at a Key Frame using -c copy and then reset the timestamp to 0, if necessary, with no loss of sync that I have found so far. The duration of the video sequence cut out is 5 minutes 0 seconds.Code: ffmpeg -i cgop.mp4 -ss 327.127127 -t 8.341750 -c copy output.mp4 will play a freeze frame 8 second video frozen on 335.468802 image Same format as above.Įxamples: ffmpeg -ss 01:19:00 -i in1.avi -t 00:05:00 -c copy out1.aviįfmpeg -ss 01:19:00 -i in1.avi -t 00:05:00 out1.aviįfmpeg cuts out a part of the video file starting from 1 hour 19 minutes 0 seconds. – the duration of the part of a video ffmpeg is to cut out. Format: 00:00:00.0000, meaning hours:minutes:seconds:milliseconds. – the beginning of the part of a video ffmpeg is to cut out. Way 1: ffmpeg -ss -i in1.avi -t -c copy out1.avi So for those cases there is the second way of splitting video files: it is considerably slower, the output files are bigger, but it seems they are always of the same quality level as input files used. The first one is good in itself, more than that - it is faster, but sometimes creates output files with certain flaws.

#FFMPEG CUT VIDEO FROM TIME TO TIME HOW TO#

There are two ways how to split video files by ffmpeg.

#FFMPEG CUT VIDEO FROM TIME TO TIME WINDOWS#

You can use these two methods which work for Windows and Linux. For high quality video and audio, read the x264 Encoding Guide and the AAC Encoding Guide, respectively.įor example: ffmpeg -ss -i in.mp4 -t -c:v libx264 -c:a aac -strict experimental -b:a 128k out.mp4 If you leave out the -c copy option, ffmpeg will automatically re-encode the output video and audio according to the format you chose.

This won't harm the quality and make the command run within seconds.įor more info, see How to cut a video, with re-encoding

#FFMPEG CUT VIDEO FROM TIME TO TIME DOWNLOAD#

Make sure you download a recent version of ffmpeg, and don't use the one that comes with your distribution (e.g.