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Help => General => Topic started by: _Fiction_ on April 03, 2019, 11:45:52 pm

Title: Using sfemovie, the ending of the movie is always cut off
Post by: _Fiction_ on April 03, 2019, 11:45:52 pm

There isn't really a forum for sfemovie so I figured this was my best chance at finding an answer. I am using the newest sfemovie along with SFML 2.4.2.

They include a demo with their library called sfeMovieDemo and thats what I'm using to test this movie.

Here is a link to the mp4 movie, which is a large particle effect type thing:

https://www.dropbox.com/s/kjhnfdie9xmteqe/nexus_core_02.mp4?dl=0


The movie stops maybe half a second to a second before its ending when played with sfeMovie and I get this debug message:

Debug: C:\Users\ficti\Documents\Libs\sfeMovie-master\src\VideoStream.cpp:239: sfe::VideoStream::getSynchronizationGap() - failed computing synchronization gap for video stream, it may become out of sync

I don't really understand the message so I'm hoping someone else does.

Any ideas?

Here is a screenshot showing the final frame played in sfeMovie(left) vs the final frame played in the default windows player(right)

(https://imgur.com/AAWJHMz.png)

Title: Re: Using sfemovie, the ending of the movie is always cut off
Post by: _Fiction_ on April 16, 2019, 04:05:18 am

Is there no help to be found for this? I tested on FFMPEG with ffplay.exe and it plays the video until the end. But sfemovie just can't seem to. Would really like some assistance :(

Title: Re: Using sfemovie, the ending of the movie is always cut off
Post by: billarhos on April 16, 2019, 02:00:50 pm

Hi,
i 've noticed that long time ago.
You can add some frames (dublicate the last) at the end of the video. I know this is not a solution.

However, i think it has to do with the "Synchronization Gap". If you change the function "getSynchronizationGap(sf::Time& gap)" to return always true you will see the last frame. I know also that this is also not a solution to the problem.
Maybe the creator can provide a valid fix for this.


in VideoStream.cpp

bool VideoStream::getSynchronizationGap(sf::Time& gap)
    {
        sf::Time position;
        if (computeEncodedPosition(position))
        {
            gap = (position - codecBufferingDelay()) - m_timer->getOffset();
            return true;
        }
        else
        {
            sfeLogDebug("failed computing synchronization gap for video stream, it may become out of sync");

            //return false; comment this
            return true; //add this one
        }
    }