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• Merge m4a files not working with ffmpeg

  29 mai 2015, par Utkarsh Srivastav

  I am using ffmpeg to merge 2 .m4a files. I am using following command.

  ffmpeg -i "concat:a.m4a|b.m4a" -c copy output.m4a

  If a.m4a is of 3 seconds and b.m4a is also of 3 seconds, then resulting output.m4a is also of 3 seconds and not of 6 seconds.

• Why Ffmpeg boxblur working slowly with non square area ?

  29 mai 2021, par Dmitri Dmitriev

  I've got a problem with ffmpeg boxblur if I want to blur ellipse area. No problem if you have 1 or 5 intervals for blurring, but if you have 90min movie and 150 intervals, it may be working > 6 hours. No problem with square blurring even if you have > 150 intervals, but I use ellipse. How do I do it ?

  


  Truncated command (original too long) :

  


  


  ffmpeg -y -i /data/www/records/streams/ftp/1100921_test.mp4 -loop 1 -i /tmp/tmpmajq7xhk/mask_for_1100921_test_1.png -loop 1 -i /tmp/tmpmajq7xhk/mask_for_1100921_test_2.png -loop 1 -i /tmp/tmpmajq7xhk/mask_for_1100921_test_3.png -loop 1 -i /tmp/tmpmajq7xhk/mask_for_1100921_test_4.png -loop 1 -i /tmp/tmpmajq7xhk/mask_for_1100921_test_5.png ..... -filter_complex "[0]crop=353:373:685:58, boxblur=20:enable='between(t,189.441341,189.781339)'[1] ;[0][1]overlay=685:58:enable='between(t,189.441341,189.781339)'[2] ;[0]crop=353:373:674:93, boxblur=20:enable='between(t,189.781339,189.901336)'[3] ;[2][3]overlay=674:93:enable='between(t,189.781339,189.901336)'[4] ;[0]crop=353:373:671:125, boxblur=20:enable='between(t,189.901336,190.001332)'[5] ;[4][5]overlay=671:125:enable='between(t,189.901336,190.001332)'[6] ;[0]crop=353:373:671:154, boxblur=20:enable='between(t,190.001332,190.09133)'[7] ;[6][7]overlay=671:154:enable='between(t,190.001332,190.09133)'[8] ;[0]crop=353:373:656:183, boxblur=20:enable='between(t,190.09133,190.151327)'[9] ;[8][9]overlay=656:183:enable='between(t,190.09133,190.151327)'[10] ;[0]crop=353:373:668:213 ..... -map 0:a -c:v h264_nvenc -c:a copy -movflags +faststart /data/www/records/streams/ftp/1100921_test.mp4_out.mp4

  


  


• ffmpeg video convert library on my VPS Linux based godaddy server not working

  6 mai 2017, par mahesh vora

  I have some query here for using your ffmpeg video convert library on my VPS Linux based godaddy server.

  I have php 5.6.30 version on my server and I want to use your ffmpeg video convert library on my server so I can use that with 5.6.30 php version ?

  As I have already many time try my self to install it but each time I am getting different errors while installing process so after that for installation of it on my server I have taken godaddy’s support team help and paid them $100 for install ffmpeg on my VPS server then in end (after 12 days) they said me ffmpeg will work with older version of php only (they saying it will work until you will have php 4.0 after that with any latest version of php it will not work) so they said me downgrade your php version then only it will work, but I can’t do that as I if I will do that then I will fetch some other issues in my project.

  So here can you please confirm "your ffmpeg video convert library will work with my php version 5.6.30 (website hosted on godaddy’s VPS Linux based server)" ?

  if not working then please suggest me to best other similar library similar to ffmpeg i want only two of the functionality 1) to cut the video 2)may be compress 3)Create thumb from the video.

  Waiting for valuable response !