Author Topic: Silent picture pink/corrupt frames  (Read 3184 times)

fpena06

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Silent picture pink/corrupt frames
« on: September 09, 2013, 11:23:49 PM »
So doesn't matter what build I use I seemed to get a couple of pink/corrupted frames when shooting in silent picture. This has happened couple of frames in or many frames later so I don't think it's a overheating issue. It happens on short intervals 10s and long 30s. Here are a couple of converted DNGs. I try searching around and didn't find much.

Thanks.

















7D
1% build (09/09/2013)
Sandisk Extreme 32gb 60MB/s

1%

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Re: Silent picture pink/corrupt frames
« Reply #1 on: September 10, 2013, 12:12:06 AM »
On 50D I had to disable dialog refresh timers to avoid this... i'll try to replicate on 7D.

Yea, both the problem and the solution are the same as 50D, knock on wood. 5DII/50D/7D share a code base..

Maybe its possible to patch/unpatch when shooting along with reslock.. dunno if that will work.

wolf

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Re: Silent picture pink/corrupt frames
« Reply #2 on: September 10, 2013, 12:37:58 PM »
@1%
On 50D I had to disable dialog refresh timers to avoid this... i'll try to replicate on 7D.

Can you explain how to do this? I've a lot of pink frames on a 550D and wonder if it is possible for this camera too?

fpena06

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Re: Silent picture pink/corrupt frames
« Reply #3 on: September 11, 2013, 11:44:22 PM »
Britom 09/10/13 build gave me literally one pink frame out of 2000 I shot. Pretty impressive. With previous build i would get 5-6 bad frames for every 100.

natschil

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Re: Silent picture pink/corrupt frames
« Reply #4 on: November 17, 2019, 02:45:47 PM »
Does anyone know what is actually causing this kind of corruption? I'm trying to output the live view via ptp, and am seeing it on all frames except the first one in a ptp session This leads me to suspect that I should be calling something between frames.

Currently I get the live view via:

    force_liveview();
    raw_lv_request();
    raw_update_params();
    msleep(50);
    raw_lv_release();
    msleep(50);
    return &raw_info;

and am using the EOS M.