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Size of the macro block in DCT
inHello all, I am having a small doubt regarding DCT calculation. Why we are going for 8 x 8 macroblocks in DCT but not higher or...
Hello all, I am having a small doubt regarding DCT calculation. Why we are going for 8 x 8 macroblocks in DCT but not higher or lower than that? Please let me know this. Thanks in advance Sunil.
(MPEG4) intra-MBs in P-VOP
inHi, I am a bit confused on why there are intra-coded MacroBlocks on a P(predicted)-VOPs. I assumed that all MBs of a P-VOP are...
Hi, I am a bit confused on why there are intra-coded MacroBlocks on a P(predicted)-VOPs. I assumed that all MBs of a P-VOP are inter-MBs. When to code a MB of a P-VOP as intra-MB? Thanks, Dok __________________________________
MP4 File Parser
inHi, I want to know the structure of an MP4 file (what do the first bits represent, where video and audio streams start and...
Hi, I want to know the structure of an MP4 file (what do the first bits represent, where video and audio streams start and end, etc). Is there any tool that can do this? Thanks, Dok __________________________________
YCbCr 4:2:0
inHi! How does the 4:2:0 Chrominance format look like in data stream? Say I have these pixels... Y0 Y1 Y4 Y5 ... ...
Hi! How does the 4:2:0 Chrominance format look like in data stream? Say I have these pixels... Y0 Y1 Y4 Y5 ... Cb0/Cr0 Cb1/Cr1 ... Y2 Y3 Y6 Y7 ... . . . Is it like, Y0,Y1,Y2,Y3,Cb0,Cr0,Y4,Y5,Y6,Y7,Cb1,Cr1...
Gaussian smoothing
inCan anybody explain me how gaussian smoothing works for image smoothing? I mean to say how does that affect the image after...
Can anybody explain me how gaussian smoothing works for image smoothing? I mean to say how does that affect the image after operation. What changes it makes to image pixels, so that we get less noisy image? tx.
MPEG-1/2 compatibility
inHi! Can an output of an MPEG-1 (audio/video) encoder be decoded correctly by an MPEG-2 decoder? Thanks! ...
Hi! Can an output of an MPEG-1 (audio/video) encoder be decoded correctly by an MPEG-2 decoder? Thanks! __________________________________
Need Test Image Sequences for Motion Estimation
inDear members ! We are in the process of designing a motion estimation module with different parameters and flexibiltiy. For...
Dear members ! We are in the process of designing a motion estimation module with different parameters and flexibiltiy. For Benchmarking, we are in need of Test Image Sequences. I have heard some about some of them. e.g. "Tennis", "Mobile", "Football". e
MPEG-4 Motion Compensation
inHi! During MPEG Motion Compensation, why must the "reconstructed" (the one that pass through DCT, Quantization...) previous...
Hi! During MPEG Motion Compensation, why must the "reconstructed" (the one that pass through DCT, Quantization...) previous frame be used for prediction instead of the "original" previous frame? Thanks! ____________________________
MPEG4 standards
inHi, I need to develop an MPEG4 codec. What ISO standards do i need to buy? And what are those that I can get for free?
Hi, I need to develop an MPEG4 codec. What ISO standards do i need to buy? And what are those that I can get for free?
TI DM642 DSP vs. Pentium
inHi all, I am new to the group, and would like to ask a question. I assume you all are familar with TI's new DSP, the "digital media"...
Hi all, I am new to the group, and would like to ask a question. I assume you all are familar with TI's new DSP, the "digital media" DM642. It is a member of the new C64x series DSPs, with clock speeds up to 720MHz. My question is, how do you think this DSP will comp
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