Recherche avancée

Sur d’autres sites (10517)

• Replace video with jpg in ffmpeg

  14 septembre 2020, par ben158

  I am trying to convert an mkv with video and audio into an m4v with the same audio, but with the video replaced with a still jpg for the duration. I'm following the examples from https://trac.ffmpeg.org/wiki/Slideshow and not having any success. Every time I attempt any of these, it doesn't insert the jpg, and instead uses the original video from the mkv. I am testing the files in VLC. Any ideas what could be going wrong ? I'm inclined to think the documentation itself may be outdated or wrong.

  


  Attempts following the linked examples :

  


  -i input.mkv -loop 1 -i image.jpg -c:a ac3 -b:a 640K -c:v libx264 -shortest output.m4v

-i input.mkv -framerate 1 -i image.jpg -c:a ac3 -b:a 640K -c:v libx264 -r 30 -pix_fmt yuv420p output.m4v

-i input.mkv -framerate 1 -i image.jpg -c:a ac3 -b:a 640K -c:v libx264 -r 30 -vf format=yuv420p output.m4v


  


  The one thing I got semi-working (based on code from another source) was -i input.mkv -i image.jpg -filter_complex "[1][0]scale2ref[i][v];[v][i]overlay" -c:a ac3 -b:a 640K -c:v libx264 output.m4v but this stretches the image out (which I don't want, I want the resultant video to have the same aspect ratio as the image without black padding on the sides).

  


  I'm kicking myself because I eventually got something along the lines of the first examples working a few days ago, but somehow didn't save my work and am back to square one. Any help is appreciated, thanks in advance.

  


• Anyone using Azure Container Instances to run FFMPEG encoding for video uploads to their website ?

  29 janvier 2021, par Jonathan

  I've been putting a website together in PHP and part of the functionality is to trim some video and encode as MP4 and AAC audio.

  


  FFMPEG runs locally on the webserver and uses up all the CPU when encoding which is not ideal. What I would like to do in theory is remove the FFMPEG service from the webserver and put it on a Azure container service which I can pay for 60 seconds of some high power computer occasionally to do the encoding, then spins back down.

  


  The issue im having the tutorials I'm following I cant even get to the point of running some FFMPEG commands via command line. Let alone writing some code in PHP to offload this to the container instance.

  


  Does anyone have anything they can point me to that might help me get started.

  


• Which is the right Cpu for my sites [on hold]

  25 octobre 2015, par Oferta Për Punë

  I have 2 sites that are converting lot of video and audio files via ffmpeg

  so i want to buy a server and problem is coz i dont know which is the right one for me

  do i need to buy

   2 SERVERS with CPU:  Intel C2750 2.40GHz   

  or to buy

  1 SERVE with CPU:  Intel Xeon E3 1220v3 

  or

   1 SERVE with CPU:  Intel Xeon E3 1230v2    

  and add host sites in one of them

  so which one is better and where do i have more power in one Intel Xeon E3 for 2 sites or host each site in new Intel C2750 2.40GHz