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• FFmpeg : How to convert horizontal video 16:9 to vertical video 9:16, with Black background on top and bottom sides

  28 mars 2019, par IbrahimCetin

  I wanted convert 16:9 video to 9:16 and find this :
  "FFmpeg : How to convert horizontal video 16:9 to vertical video 9:16, with blurred background on top and bottom sides"

  But I want video top and bottom sides black but I couldn’t. How can I do this ?

  Thanks for your help

• 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