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• Ffmpeg split video file to few video files (with fixed duration) with playlist

  13 septembre 2020, par Kiril Mytsykov

  I need to split video file by duration (for example, if I have video file with duration of 30sec and I want to get 10 chunks : 3sec, 3sec etc.. and m3u8 playlist).

  


  I have my-video.mp4 (30 sec).
When I run this command :

  


  ffmpeg -i my-video.mp4 -c:v libx264 -c copy -an -map 0 -muxdelay 0 -muxpreload 0 -output_ts_offset 0 -f segment -segment_time 3 -segment_wrap 1000 -segment_list_size 1 -segment_list my-video.m3u8 -segment_list_flags +live my-video-%03d.mp4


  


  The first problem is :
I receive only 4 mp4 files :

  


  my-video-000.mp4 (8sec)
my-video-001.mp4 (8sec)
my-video-002.mp4 (8sec)
my-video-003.mp4 (5sec)


  


  The second problem is :
my-video.m3u8 playlist is created, but with last segment only :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA-SEQUENCE:3
#EXT-X-ALLOW-CACHE:YES
#EXT-X-TARGETDURATION:6
#EXTINF:5.033333,
my-video-003.ts 
#EXT-X-ENDLIST


  


  What's wrong with my command. I have tried a lot of different combinations (after reading http://ffmpeg.org/ffmpeg-formats.html#segment_002c-stream_005fsegment_002c-ssegment and similar questions/answers on stackoverflow, but didn't succeed)

  


• How to overlay two video files including audio of each video using ffmpeg"

  11 janvier 2023, par user255048

  i would like to merge some music (video file) and singing (video file) into one video file.

  


  i've tried with this :

  


  ffmpeg -i music.mp4 -itsoffset 2 -i sing01.mp4 -filter_complex  overlay=635:300 test.mp4


  


  and everything is fine, except that i cannot hear the singing. what i should add to this command to do the job correctly ?

  


  thanks

  


• moviepy output video only has sound in vs code and chrome but not in quicktime (the mac video player)

  24 janvier 2023, par UrLocalGoose

  I am using moviepy to make simple videos that require adding background music to a video. I have built essentially the whole application but I ran into a problem when showing people the videos. I tried emailing myself the video and it didn't have any sound, then I tried to play the video with the built in mac video player, quicktime, and it didn't have any sound, however, when I played the video in vs code's video player it worked perfectly, I also used the file path to view the video in chrome, and that worked too. I suspect that it has something to do with the encoding but I am a novice when it comes to video and audio encoding. This is what my code looks like :

  


  from moviepy.editor import *

background_video = VideoFileClip("./background.mp4")

background_music_audio = AudioFileClip("./music.wav")

comp = background_video.set_audio(background_music_audio)

comp.write_videofile("./test.mp4")


  


  I tried to make a video with background music but it had no sound