+ + Using ffmpeg for Simple Video Editing + + +
+ + + + + +Story +Today, I have recorded a video for one of my classes and I was required to upload it till midnight. The video was perfect except for a few seconds wher...
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+ Using ffmpeg for Simple Video Editing +
+ + + + + +Story
+Today, I have recorded a video for one of my classes and I was required to upload it till midnight. The video was perfect except for a few seconds where I misspelled some words and started again. I had to remove that part from the video before uploading it. Since I was low on time, I thought that I better use a GUI program to do this job. I opened up Kdenlive and jumped into editing my video. It was my first time using it so I spent some time to cut and delete the parts that I want to get rid of. When I was ready, I clicked Render button to render my video. It was waaay too slow than I expected. Since I have nothing to do while waiting for render to finish, I thought I could give ffmpeg a shot.
Let the show begin
+Like Kdenlive, I have never used ffmpeg before. Like every normal Linux user do, I opened up a terminal and typed man ffmpeg to learn how to use it… Just kidding :D I opened a browser and typed “ffmpeg cut video by time”. Not the best search query, but it was good enough to find what I am looking for as the first result.
Cutting the videos based on start and end time
+According to answers on the page I mentioned, I run the following commands to cut my video into two parts:
+ffmpeg -ss 00:00:00 -to 00:01:55 -i input.mov -c copy part1.mp4 # take from 00:00 to 01:55
+ffmpeg -ss 00:02:03 -to 00:05:17 -i input.mov -c copy part2.mp4 # take from 02:03 to 05:17
+These two commands run instantly! Kdenlive was still rendering… The progress was 46%. Meh… I said “Duck it, I am gonna use ffmpeg only” and cancelled the rendering.
+ +Concatenating the video files
+Now we have two videos that we want to join. Guess what will be our next search query? “ffmpeg join videos”. And here is the first result:
+ +echo file part1.mp4 >> mylist.txt
+echo file part2.mp4 >> mylist.txt
+ffmpeg -f concat -i mylist.txt -c copy result.mp4
+And we are DONE! How easy was that? Whole process took about 10 minutes including my search on the internet. If I continued waiting for Kdenlive to finish rendering, I would probably be still waiting at that time. I love the power of command line!
+ + +