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• Capture pictures from IP camera

  29 décembre 2016, par Иван Деркач

  i’m trying to make project, which will take picture from ip camera (camera can’t send any esle format of video, except for .h264), my problem in that i don’t know, how to do it. I used live555 library and i tried to use openRTSP (from testProgs). So got images this way, but i had make .mp4 files and save little slices of video, after i opened them with Aforge.Video.FFMPEG library and took pictures, but i couldn’t take the video, while my parallel thread made me those files. So i checked those files in my program, but it doesn’t work. There was another problem, live555 standart program don’t write evenly(first file can be 10 sec, second can be 8 seconds, about 5-6 files don’t work, if total duration 20 secodns), and because of it Aforge couldn’t open them all. Please help me, i suggest that i should use testRTSPclient(from testProgs too), it’s dummy of real program, but i don’t know, what to do, this library little hard for my understanding. Give me advice and thanks.
  There references to this library : http://www.live555.com/
  There visual studio project of this library : http://www.bumblebee.website/downloads_l555.html

• FFMPEG и bitrate

  26 avril 2012, par victor kulichkin

  I wrote the app for broadcasting video streams to livestream.com. For it I used FFMPEG codes.
  The program works well, but there is one issue : if I set an height bitrate (300 - 500 kbit/s),
  then I get a good video, but the server (livestream.com) shows video with interrupts. If I set a low bitrate (50 - 100 kbit/s) - the video goes without interrupts, but its quality is not good. I tried to find some avarage value of bitrate (100 - 150), where the video stream went without interrupts, but my customer did not like its quality.

  I downloaded XSplit software, which had the same broadcast feature, and saw that program sent a good video stream with a low bitrate (50 - 150 kBit/s).
  Anybody says me how is this possible to make it ?

• How to Capture the Desktop and System Sounds using FFMPEG and C ?

  3 décembre 2014, par CaptainObvious

  I’m new to multimedia programming, but have lots of experience in programming in C in general. I want to develop my own program to capture( record ) the desktop and save it to a youtube compatible file using the ffmpeg API. Due to my inexperience in the multimedia field, I don’t know where to start looking in the ffmpeg API for such a function or the terminology commonly used to refer to such functionality. I’ve tried googling to see if I could find any examples or tutorials or how to use ffmpeg to do something similar to this, but I have found nothing except the ways it can be done using the pre-compiled programs on the command line. The only tutorial I have found relating to ffmpeg and C was Dranger’s tutorial, but that only covers how to make a simple video player. Can someone provide an example or direct me to the correct line of API calls in order to implement such a program ?