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Player stops before video is done Created May 31, 2010

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Views: 1906     Replies: 7     Last reply Aug 8, 2011  
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pstrand

Posts: 4

Registered:
May 27, 2010

Player stops before video is done

Posted: May 31, 2010

We are having an issue with some video files, that stops before they should. One example is here :

https://lab6.soonr.com/share/fang/case-23354.avi

This video is 36 seconds long, but stalls around 23 seconds - this happens on Mac, Ubuntu and windows, across all browser types.
If you download the original file, it plays fine.
To play in flowplayer, it was converted using FFMPEG - we used these parameters : 
-vb 500000 -ar 22050 -f flv

I tried upgrading flowplayer to the latest version, but that did not help.

When looking at console output, there is no smoke.
So I am stalled here - any ideas to what can be wrong ?

thanks,
Peter

Anssi
Flowplayer Flash & video streaming developer

Posts: 1194

Registered:
Jul 24, 2007

» Player stops before video is done

Posted: May 31, 2010

Reply to: Player stops before video is done, from pstrand
Sounds like an encoding issue. You can try encoding your video using our setup tool.

pstrand

Posts: 4

Registered:
May 27, 2010

» » Player stops before video is done

Posted: May 31, 2010

Reply to: » Player stops before video is done, from Anssi
Anssi,

thanks for the reply.
I tried to use the setup tool - but I can not create a setup. Do i need a commercial license to do that?

I have tried a lot of different encoding parameters when converting with FFMPEG ( I am by no means an expert ), and all of these produce output that fails around seconds 23 to 25. The video plays flawlessly in other players ( mplayer etc ).
Are you aware of any FFMPEG specific settings to use or avoid ?

thanks,
Peter

pstrand

Posts: 4

Registered:
May 27, 2010

» » Player stops before video is done

Posted: Jun 7, 2010

Reply to: » Player stops before video is done, from Anssi
Do I need to purchase a commercial licence to be able to get you to investigate this issue in more detail ? I doubt that it is an encoding issue, as the converted flv file plays well in other players

Edge
Vizmu Media ------------------- http://vizmu.com/

Posts: 576

Registered:
Nov 29, 2008

» Player stops before video is done

Posted: Jun 7, 2010

Reply to: Player stops before video is done, from pstrand
Out of curiosity how many keyframes are you using via the ffmpeg encoding command line?

With ffmpeg the command would be -g

pstrand

Posts: 4

Registered:
May 27, 2010

» » Player stops before video is done

Posted: Jun 8, 2010

Reply to: » Player stops before video is done, from edge
ok, I spent some time with the settings for FFMPEG. I tried converting to mp4 instead of flv, and that gave me a working video - in better quality.

If anyone should be interested, this is the ffmpeg parameters I used : 

-crf 15 -vcodec libx264 -acodec libfaac -ab 128k -ac 2 -b 256000 -flags +loop -cmp +chroma -partitions 0 -subq 1 -trellis 0 -refs 1 -coder 0 -me_range 16 -g 300 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 10 -qmax 51 -qdiff 4 -level 30 -f mp4

demimurych

Posts: 81

Registered:
Jan 22, 2010

» » » Player stops before video is done

Posted: Jun 8, 2010

Reply to: » » Player stops before video is done, from pstrand
why you dont use presets?

http://rob.opendot.cl/index.php/useful-stuff/ffmpeg-x264-encoding-guide/