I have found it very useful to concatenate multiple video files together after working on them separately. It turns out, that is rather simple ...
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Thank you for your awesome write, quick question is it possible to join a video to another at a specific time? Say for example video1.mp4 is 30s long and video2.mp4 is 10s long, I want to join video2 to video1 at exactly 00:00:20s. So in the final output the first 20s are from video1 then the next 10s from video2 and the final 10s from video1. The final video output should be 40s long
Try something like this and see what you get, this does a re-encode though:
-tbefore the first input is indicating we only want 20 seconds of this stream-ssbefore the third input indicates to start reading from the stream at twenty seconds inThere might be some overlap when the first section of video 1 end and starts back up again after video 2. With most formats, ffmpeg can't seek exactly to what time you specify, only the closet seek point.
thank you, this works perfectly final question how can I introduce a fadeIn and fadeOut to the video being inserted?
Try something like this, might need tweaking.
This will add a fade out to the end of the first section, a fade in to the start of the second section, a fade out at the end of the second section, and finally a fade in to the start of the last section.
This should mimic the effect of an actual scene transition
You notice that the argument I passed in for the
stvalue of the fade filters for the fade out effects is basically equal toThanks a lot, learnt various ways of joining videos , well explained. One question , I have 6 separate mp4 videos for each topics. Now wanted to joins all these videos in one mp4 with text and number displayed till end of that video, for example, first videos with text "Topic 1" till end of first video, once second videos start's text changes to "Topic 2" and ... so on.
Check out the drawtext filter that ffmpeg has, that should do the trick.
Input link in1:v0 parameters (size 480x640, SAR 1:1) do not match the corresponding output link in0:v0 parameters (640x360, SAR 1:1)
I get this error when I try to concatenate two webm files. How do I resolve this?
The videos aren't the same resolutions. You'll have to scale one of them to be the same resolution as the other.
Thanks. I tried FFmpeg to merge split videos. I think it is hard for me. I am now using an easy alternative - Joyoshare Video Joiner to do video merging, which is recommended by my friend. She said that the merging software is easy to use and it merges files of the same format and codec in original quality. That's proven true after I try.
Hello I tried following your method
ffmpeg -i intro.mp4 -i video.mkv -filter_complex "[0:v][0:a][1:v][1:a] concat=n=2:v=1:a=1 [outv] [outa]" -map "[outv]" -map "[outa]" out.mp4
And this is the result
Input link in0:v0 parameters (size 960x1280, SAR 16:9) do not match the corresponding output link in0:v0 parameters (720x720, SAR 16:9)
The first video is made with app intro maker, the second video is made with joining audio and 1 image (using ffmpeg too
ffmpeg -loop 1 -i image.jpg -i audio.ogg -preset ultrafast -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv440p -shortest mentahan.mp4),
Before I concat videos using this
ffmpeg -f concat -i part3.txt -c copy out.mp4
But the uploaded result cant be played from telegram, but can be played with android video player
can you help me?
Awesome Tut man!!
So inside list.txt if you put n number of files, you can contact the files regardless of the format. I had to work with .wav and worked like a charm.
Thanks once again!!
Glad it worked for ya!
Thanks for explaining. Can this code be represented in ffmpeg-python?
Hi thanks for explaining Can the same script be implemented in python?
Hi thanks for explaining . Can this be script implemented using python ?