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• doc/ffmpeg : improve -disposition, -stats, and -progress documentation

  17 octobre 2024, par Soma Lucz

  doc/ffmpeg : improve -disposition, -stats, and -progress documentation
   disposition :
  
  Clarify the meaning of the default value, and how the '+' and '-'
  
  prefixes work. Add more examples.
   stats :
  
  Clarify that it appears as an "info"-level log.
   progress :
  
  Add info about the "progress" key's value being "continue" or "end".
  
  Add an example of logging to stdout.
  Signed-off-by : Soma Lucz <luczsoma@gmail.com>
  
  Signed-off-by : Anton Khirnov <anton@khirnov.net>
  

  • [DH] doc/ffmpeg.texi

• Solution Merge mp3+mp4 together with FFMPEG or other

  7 juin 2018, par SandyUgale

  I have been working on a project where I have .mp3 and video file (.MP4). I have FFMG on my AWS server and I’m providing both to FFMPEG give me complete video file with provided audio file. Then I send this file to my AWS S3 and then fetch this video as needed in my web app.

  Problem/Use Case :

  If I have 10 mp3 and 10 mp4 video files then I have to wait the until it complete all videos then only I can send them on S3, so Im waiting for long as number goes up.

  Can I control this ?

  Solution-1 : Don’t need to wait for loop

  Meaning instead of starting all merging together parallel I would like merging to be done one by one. Referencing above example

  First merge of 1.mp3 + 1. Mp4= 1.mp4 (complete file) –upload s3.  
  
  Second merge of 2.mp3 + 2. Mp4= 2.mp4 (complete file) –upload s3.  
  
  Tenth merge of 10.mp3 + 10. Mp4= 10.mp4 (complete file) –upload s3.  

  Solution-2 : send video as they ready

  How I can know which video has been ready to send to s3 ?

  Solution-3 : other service

  Is there any other online API or services where I can pass mp3 + mp4 and give me video url simply after merging so technically video will hosted on either their platform or on my S3 doest matter.

• Proportion for the values of maxrate, mnrate and bufsize for encoding videos for streaming purpose and past duration too large warning

  15 décembre 2015, par himanshu nautiyal

  can you please tell me about minrate, maxrate and bufsize. And is it necessary to give maxrate and minrate for encoding videos for streaming purpose. Actually I understood the meaning and functions of minrate, maxrate and bufsize through ffmpeg documents but I am not finding any solution of what would be difference in between the values of these three.

  for example : I am using this command
  ffmpeg -y -i testing.mp4 -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -r 24 -g 24 -b:v 2m -maxrate 1m -bufsize 1m -vf scale=1920*1080 aa.mp4

  but I am not sure if this -b:v 2m -maxrate 1m bufsize 1m is in correct propotions or not. My output is fine but I don’t want any problem on working real time. Moreover, I am also getting the following warning

  Past duration 0.634361 too large
  Past duration 0.674370 too large
  Past duration 0.714363 too large 0kB time=00:00:01.32 bitrate= 0.3kbits/s

  Past duration 0.754372 too large
  Past duration 0.794365 too large
  Past duration 0.834373 too large
  Past duration 0.874367 too large
  Past duration 0.914360 too large
  Past duration 0.954369 too large

  thanks in advance