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• Add audio which has short duration to a long video with using amix code

  26 avril 2020, par Tevfik

  ffmpeg -y -i audio.mp3 -i input.mp4 -filter_complex "[0:a][1:a]amix=inputs=2:duration=shortest" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1400k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -preset superfast output.mp4

  



  ffmpeg -i r.mp4 -i logo.gif -filter_complex "[0:v]setpts=PTS/1.06,scale=854:480[v1] ;[0:v]setpts=PTS/1.05,scale=854:480[v2] ;[v2]setpts=PTS/1.06,scale=854:480[v3] ;[v1][v3]overlay=shortest=1:enable='lt(mod(t,6.9),3)*gte(t,6.9)'[vm] ;[vm][1:v]overlay=5:main_h-overlay_h-5 ; -pix_fmt yuv420p -c:v libx264 -profile:v main -level:v 4.1 -g 33 -bf 2 -crf 22 -flags +ildct+ilme -top 1 -c:a ac3 -b:a 320k -ar 48000 -an -aspect 16:9 MP4_HD_420.MP4

  



  I want to join these codes in a one code. My aim mix mp3 audio and video audio without delete the video sound and then use the codes below. Mp3 sound duration is too short that's why I want to hear the sound till the video finishes. But I couldn't manage to join them. Need your help thanks...

  


• mp4 video fragmented using ffmpeg takes long time to start playing

  14 mai 2020, par daldoy

  When using ffmpeg, to stream the output file to S3, it is required to use "-movflags frag_keyframe", and the generated file will be a fragmented mp4.

  



  When I try to play this files from S3 it takes a long time to start playing. I have tried the recommended movflags from MDN Docs and all the possible combinations.

  



  ffmpeg -i https://notreal-bucket.s3-us-west-1.amazonaws.com/video/video.mp4 -f mp4 -movflags frag_keyframe+empty_moov pipe:1 | aws s3 cp - s3://notreal-bucket/video/output.mp4

  



  Link of the file : https://happy-testing.s3-eu-west-1.amazonaws.com/stack-overflow/help.mp4

  


• ffprobe File not fournd error due long path BUT windows long path enabled

  10 novembre 2020, par nonayme

  I have a python program which run ffprobe on some videos on my win10 computer, and its working fine for most of them. The buggy ones have pretty long path, which seems to be the issue despite a "No Such file or Directory" message from ffprobe, this because :

  


  

  • I checked the path and it exists

  


  • In cmd when I mannualy cd to the directory and start ffprobe -i autocompletion complete with the right name

  


  • Windows Sub-system Linux achieve to run ffprobe from my copy pasted path extracted from my program

  


  


  => the file exist

  


  

  • I made a copy of my file and renamed it with a longer name than the buggy one (ffprobe doesn't work), and also with a really short name (ffprobe works)

  


  


  => path size is the culprit
BUT I have enabled long path on both the registry AND the group policy... any ideas ?