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Video looping problem

Rogier Tuinte

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I work a lot with loop-videobackgrounds for company presentations. This time I use a projection 5760 x 1080 pix (3x HD). And I rendered the loop content in 3 HD mpeg-2 video with 25 fps (30sec long). I used a control cue with "jump to". It runs very smoothly but always when it loops, it stutters! Also when the video starts at play.


So what I did is, I made a composition and added the 3 mpegs. Then I created a task and imported the composition (Time at 2 sec on the timeline) with a opacity fade in. Added a pause-marker and set the composition on "free running" and "looping".


This solved the looping problem perfectly. Only when I start the task it stutters several times during the first 1 - 2 seconds.


Hopefully anyone can tell me how to solve this problem.


Thanx in advance.




System Specs:

Graphics: AMD Radeon HD6900


CPU: Core i7 2600 BOX 3.40

SSD: 120GB SATA3 intel 510 series


OEM :Win 7 SP1 Home Prem 32b

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Hello Neil,


The mpeg loops smooth in VLC player (mac), also in the Wathout-composition. Once it plays, there is no problem.

Only the beginning from play it stutters several times and the 3 Mpeg's do not play sync at the start.

I'd like to make a smooth fade-in for the loop-background, of course without the stuttering.



Format : MPEG Video

Format version : Version 2

File size : 179 MiB

Duration : 1mn 0s

Overall bit rate : 25.0 Mbps



Format : MPEG Video

Format version : Version 2

Format profile : Main@High

Format settings, BVOP : Yes

Format settings, Matrix : Default

Format settings, GOP : M=2, N=24

Duration : 1mn 0s

Bit rate : 25.0 Mbps

Width : 1 920 pixels

Height : 1 080 pixels

Display aspect ratio : 16:9

Frame rate : 25.000 fps

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Interlaced

Scan order : Top Field First

Compression mode : Lossy

Bits/(Pixel*Frame) : 0.482

Stream size : 179 MiB (100%)

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Hi Rogier-comparing these stats to those of a similar video currently running on my system the only two differences I can see are:

1.This video is not progressive

2.My renders read as High@High for the format profile.Are these elementary stream?

If you wish I can test on my system to see if the problem reoccurs.



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