This may result in incorrect timestamps in the output file.
Next, you have to create a text file which has a list of MP4 files that you want to combine by type this command and press Enter.ġ386072. On Command Prompt window, change path to the folder where you keep MP4 files. Note: You can also press Windows + R keyboard shortcut and type cmd.exe to open command prompt window. Then, right-click Windows icon at bottom left and select Command Prompt. In this example, I will copy the file to my MP4 folder. You will see ffmpeg.exe which is the file that I will use to combine MP4 files. When the download finishes, extract the file and open bin folder. In this example, I want to combine MP4 files in the C:\Users\\Desktop\2016Y03M29D12H folder. Note: The MP4 files must have exactly the same codec and codec parameters in order to combine using this method. In this article, I will show how to combine MP4 files, which I got from a digital camera, to a single MP4 file without re-encoding using FFMPEG on Windows 10. Lazily enough, I created a temporary directory on Desktop where I was storing the intermediate files as well as a single resulting video file.If you have lots of MP4 files, which have exactly the same codec and codec parameters, and you want to combine these files to a single MP4 files, you can use FFMPEG to quickly combine these files without re-encoding. First, it read two command line arguments, with the first ( $1) containing the path to the video file and with the second ( $2) storing the path to the file with the timestamps. Once such file was ready, I applied the following script:Įcho "Video cutting and assembling: $video_file "Įcho "Timestamps file: $timestamps_file "ĭo # Make array from the line (space-separated timestamps)Ĭlip_end = $ -gt 1 ] thenįfmpeg -y -f concat -safe 0 -i "$filelist " -c copy "$tmp_dir /merged.mp4" fi My approach to recording timestamps was to create a line for each “good” small portion of the video I wanted to produce, delimited with a starting and ending timestamp im the format of HH:MM::SS: 01:26:10 01:44:04 
Once I was done with a portion of the original file that would further constitute a smaller clip with removed “bad” parts, I ran a bash script utilizimg ffmpeg to cut the big video in a set of smaller ones and then assemble them back in one single file. My overall workflow was quite simple: I was rewatching the videos in VLC and recorded timestamps I wanted to cut away in a text file. In this blog post I am going to summarize my experience with this task.
Surely, I wanted to do this programmatically using ffmpeg. Most parts of the videos contained the content I wanted to preserve, but I wanted to cut away some small portions and, additionally, split the big video files into a series of smaller ones. This summer I had a task of processing a large collection of videos that I recorded myself while teaching a course at NTNU.
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