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• ffmpeg new version doesn't run the same line

  19 juillet 2021, par Azat Aleksanyan

  on my raspberry pi w 0, I used to run the following line when the version of ffmpeg was 3.2.14-1_deb9u1.

  


  ffmpeg -i *input video name* -vcodec h264_omx *output video name*


  


  But after occasional update to the version 3.2.15-0+deb9u2 the h264_omx gives the following error :

  


  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width, or height

  


  need to mention just nothing changed, the same code works for the previous version and doesn't work for the newer one.

  


  So, is there any code change that I should do ?

  


• how ffmpeg work on server for different type of users example window mac linux [on hold]

  5 août 2016, par sam

  I have a question about ffmpeg and i am using mac and xampp and php and jquery and i make a function that upload video or image file or another type and i when i saw examples of ffmpeg in stackoverflow. that seems to be confusing but my questions are

  1. client can be window user or mac or another than we have to download all different type of ffmpeg file for example ffmpeg.exe and mac can be another because when i saw how to download ffmpeg than they show me different operating system.

  2. And where we have to save ffmpeg file in xampp and how

  3. If i download all things for mac and i run it and it works and i make my website online and than any window user or linux user will upload video it will work for him also. But we donot client download ffmpeg in their system

  Please help me that is my question and if anybody know good example of create thumbnail for video please tell me

  thankyou i will wait for your reply

• ffmpeg PHP variables in exec doesen't work

  3 juin 2016, par Simon Gruber

  echo exec('C:\ffmpeg\bin\ffmpeg.exe -framerate 1/5 C:\xamppp\htdocs\gen\image1.jpg -c:v libx264 -r 30 -pix_fmt yuv420p C:\xamppp\htdocs\gen\out.mp4 2>&1');

  This Works, but with "" it doesn’t work.

  and with "" and a variable in it it doesn’t work.

  echo exec("C:\ffmpeg\bin\ffmpeg.exe -framerate 1/5 -i C:\xamppp\htdocs\gen\$image.jpg -c:v libx264 -r 30 -pix_fmt yuv420p C:\xamppp\htdocs\gen\$outputname.mp4 2>&1");