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• How to split multiple mp4 videos using ffmpeg ? current solution is too slow [duplicate]

  16 août 2018, par MUHAMMAD Saad Zaheer

  This question already has an answer here:

  • FFmpeg splitting large files 1 answer

  I want to split multiple mp4 videos into smaller chunks of size 30-40 secs after many days I have found an answer which used ffmpeg i.e

  ffmpeg -i /home/msz/Downloads/CartoonVideos/1.mp4 -ss 180 -t 30 /home/msz/Downloads/NewCartoonVideos/1-7.mp4
  

  but this is single line command and it's taking too much, I have to change it every time.Can anybody tell me other methods or change this code in script/loop?

• What is the difference between AVFormatContext, AVCodecContext and AVParserContext in ffmpeg libavcodec library ? [on hold]

  16 août 2018, par user7939031

  I am new to this ffmpeg c programming. I come across these 3 structures:

   AVFormatContext
   AVCodecContext 
   AVParserContext
  

  what is the use of these? Could anyone summarize them?

• Segmentation fault while decoding the audio(mp3) file using C API

  16 août 2018, par user7939031

  I am executing decode_audio.c file. I compiled it successfully. I am getting segmentation fault when I execute. I included the avformat.h header file. I changed the codec logic according to mp3 format. I am using the following command to compile and execute.

  mycode$ gcc -o decode_audio decode_audio.c -lavutil -lavformat -lavcodec -lswresample -lz -lm
  mycode$ ./decode_audio audio.mp3 raw.bin 
  

  What is the reason for this segmentation fault in my program?

  You can see my modified program here.

  I am using Ubuntu 16.04 LTS and ffmpeg 3.4.4 versions. Please help me.

  Thanks in advance.

• What is the algorithm to achieve audio decoding in C through ffmpeg ? [on hold]

  16 août 2018, par user8371461

  I want to decode the MP3 audio file, I want to know the algorithm in terms of C language API's. I have gone through dranger tutorials. But the API's they used are deprecated now. Could anyone tell me what are the API's I need to follow one by one?

• ffmpeg h264_qsv Coded memory leak

  16 août 2018, par donghui.R

  I am developing in C++, using libx264 encoder to encode and push rtsp stream, I can see that the program memory will not rise in the task manager, but when I use the h264_qsv encoder, the program memory will slowly rise, this problem is bothered I have been here for a long time, please help me!