Hi all,
I am working with 6467, dvsdk_1_40_00_11.
After spending some time comparing frames decoded from my module and
frames decoded from the "decode" sample, I came to the conclusion that
the codec is not doing a good job on the first picture it decodes.
The video is Mpeg2 and looks like this:
Frame DTS PTS
(0)I 1:03 1:13
(1)B none 1:06
(2)B none 1:09
(3)P 1:13 1:23
(4)B none 1:16
(5)B none 1:20
(6)P 1:23 1:33
....
All the frames are identical from my module and from the sample except
the first I frame.
Note that after decoding, the display order will be: 1B-2B-0I-4B-5B-3P-....
So, for the first decode frame -0I- if I display it, I can see the
chrominance doesn't look right for both my module and "decode".
Doing something like
hDstBuf = BufTab_getFreeBuf(hBufTab); |
memset(hDstBuf->virtPtr , 0x88, hDstBuf->size);
I get a frame that looks good but is in black and white. I therefore
assume the codec gets the luminance right for that first frame but
doesn't initialize the chrominance. "memset"ing to 0x0 would result in a
green display etc.
-1- Has anyone had such kind of problem?
-2- I am using the evaluation kit ; I know already that the codec I have
for h.264 is rather limited ; would the mpeg2 codec have a bug /
limitation as well?
-3- How do I report that bug?
Thanks for any suggestion.
Best regards,
Laurent
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