Hi Einar,

Try x11-xv or x11 as video output to rule out OpenGL problems.

Yeah - I already tried this, including restarting cinelerra with these options changed. I also tried disabling Compiz.

There is too few information ro diagnose your problem. Try to start
cinelerra from terminal - you may see there messages
helping to solve problem.

Maybe this is significant:

-- from terminal output --

mpeg3_read_prev_packet 100 result=0 title=0 [....many lines like this..]
mpeg3_read_prev_packet 100 result=0 title=0 tell=25030eb6 program_byte=25030eb6
Playback3D::print_error:
uniform sampler2D tex;
uniform float h_offset;
uniform float s_offset;
uniform float v_offset;
void main000()
{
        vec4 pixel = texture2D(tex, gl_TexCoord[0].st);
{
float r, g, b;
float h, s, v;
float min, max, delta;
float f, p, q, t;
r = pixel.r;
g = pixel.g;
b = pixel.b;
min = ((r < g) ? r : g) < b ? ((r < g) ? r : g) : b;
max = ((r > g) ? r : g) > b ? ((r > g) ? r : g) : b;
v = max;
delta = max - min;
if(max != 0.0 && delta != 0.0)
{
    s = delta / max;
        if(r == max)
        h = (g - b) / delta;
        else
        if(g == max)
        h = 2.0 + (b - r) / delta;
        else
        h = 4.0 + (r - g) / delta;

        h *= 60.0;
        if(h < 0.0)
        h += 360.0;

-- then continues with more source code, ending with --

pixel.r = r;
pixel.g = g;
pixel.b = b;
}
        gl_FragColor = pixel;
}

void main()
{
        main000();
}

Fragment info
-------------
0(51) : warning C7050: "b" might be used before being initialized
0(51) : warning C7050: "g" might be used before being initialized
0(51) : warning C7050: "r" might be used before being initialized

-- end of terminal output --

Lots of mention of rgb...

Where did you get your cinelerra? Different sources may have different
problems. Did you compile yourself or installed a package? What format
is your media?

The version is 2.1.1-git20100325~ppa5~lucid. The binary was installed using apt-get. The OS is 32 bit Ubuntu 10.04.

Tony

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