[Libav-user] Right pixel column is repeated in the left

Drabner drabner at zoobe.com
Wed Nov 2 16:43:00 CET 2011

I did that:

ofstream testFile;
testFile.open(filepath(each frame another file));
testFile.write((char*)ptr->picture->data[0], ptr->picture->linesize[0]);
testFile.write((char*)ptr->picture->data[1], ptr->picture->linesize[1]);
testFile.write((char*)ptr->picture->data[2], ptr->picture->linesize[2]);

But when opening it with irfanView, it asks for size, etc.
I give the correct size, and 24BPP (with checked YUV 4:2:0), and Planar as
an option. This should be correct for PIX_FMT_YUV420P and the way I'm
writing the file, shouldn't it?
And all I get are completely grey pictures. Each frame the same.

But even if I play around with other BPP settings, no YUV, etc. I get no
picture that would make sense to me.

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