HTTP Pseudo-Streaming bug, the video is slow, and lag

[redstrike]

Please check my report in the topic below:
http://www.longtailvideo.com/support...s-slow-and-lag

Thanks.

[NiteWave]

have you tried this video on other web server like apache?

this will give us more info.

update:
I tried this video on LAN with 256K Outbound Bandwidth (bytes/sec) limit, and JWPlayer 5.7(http://developer.longtailvideo.com/t...fl5/player.swf), seek working fine.
not sure if the file name will cause any problem, I renamed it to video.mp4 before testing.

[meto]

I had same problem on KVM, under OpenVZ everything was fine. Are you using any sort of virtualisation?

[redstrike]

have you tried this video on other web server like apache?

this will give us more info.

update:
I tried this video on LAN with 256K Outbound Bandwidth (bytes/sec) limit, and JWPlayer 5.7(http://developer.longtailvideo.com/t...fl5/player.swf), seek working fine.
not sure if the file name will cause any problem, I renamed it to video.mp4 before testing.

No. I don't use Apache. Seeking time is ok, but the video's frame starting lagging, not smooth. i have tried to rename the file for long time ago but it's not working. Can you show me your mp4 link?

I had same problem on KVM, under OpenVZ everything was fine. Are you using any sort of virtualisation?

I am using a VPS with 768 MB RAM. Is it the bottleneck? But another videos work correctly (after seek time, it's play normally, not lag in frame). Maybe, i don't know which virtualization software is used by my VPS provider, but it can be KVM.

[meto]

It could be due to some kind of IO buffering in KVM, dont really know, I just went with OpenVZ. Which VPS provider do you use then?

[redstrike]

Originally Posted by meto

It could be due to some kind of IO buffering in KVM, dont really know, I just went with OpenVZ. Which VPS provider do you use then?

My VPS Provider told me that they are using something similar to Parallels Virtuozzo. I hope this is not LiteSpeed's bug.

[NiteWave]

Can you show me your mp4 link?

it's in a LAN. I just created a test.html:

<embed
      flashvars="file=video.mp4&provider=http&http.startparam=start"
      width="876" height="480"
      src="player.swf"
      allowfullscreen="true"
      allowscriptaccess="always"
      wmode="transparent"
/>

the video.mp4 is the "problem" mp4, player.swf is JWPlayer 5.7 as mentioned before.

can you access test.html on your server and see if same problem.

[redstrike]

http://www.raphay.com/test.html
http://www.raphay.com/test1.html

Above is my problem, test.html is video.mp4 (bug, video frames become laggy after seeking time) and test1.html is another mp4 file.

[NiteWave]

got it ... I think it's bit rate / bandwidth issue.
when your bandwidth is wide enough, you can host high bit rate videos;
otherwise only low bit rate video can play smoothly.

the video itself has no problem.

[redstrike]

Originally Posted by NiteWave

got it ... I think it's bit rate / bandwidth issue.
when your bandwidth is wide enough, you can host high bit rate videos;
otherwise only low bit rate video can play smoothly.

the video itself has no problem.

I have converted those files using VBR-2 pass method. The bit rate of each scene is high and low in a dynamic way. You mean the overall bit rate (file size) or the bit rate per second ?

I see, i have checked another videos. It show that the videos which over 26 MB is laggy, below 25 MB is ok.

But i think another issue is the frame rates of those videos. 29.97 fps, 30 pfs is better than 25 fps? And how much banwidth is enough for streaming videos with quality over 360p (480p, 720p)? I don't sure about this situation...

Update: I have re-converted the video to a new version which has preset similar to Youtube's 480p: http://www.youtube.com/watch?v=kypfWa6b_7g The framerates from 25 pfs to 24 pfs. At: http://www.raphay.com/test1.html

But it's still not working. Was CPU of server the bottleneck?