[Mp4-tech] why are there 4 bytes 0x00000001 instead of 3 bytes
inevery NALU?
Gary Sullivan
garysull windows.microsoft.com
Sat Oct 21 15:32:30 ESTEDT 2006
Alex (et al),
It's not quite that simple.
There are actually five distinct kinds of special zero-valued bytes that
can fall outside of the range between the nal_unit_type ID for a NAL
unit and the "RBSP trailing bits" that follow the basic data payload of
the NAL unit. Sometimes the inclusion of such zero-valued bytes is
optional and sometimes it is mandatory. Explaining the complete
rationale for all of them can get a bit complicated.
The first one that can appear in a bitstream is called
leading_zero_8bits. This is a special name for any extra zero-valued
bytes at the very beginning of the bitstream. These are conceptually
assigned to the first "byte stream NAL unit".
The second one is the zero_byte. Its presence is mandatory for the
first NAL unit of each acess unit and for SPS and PPS NAL units,
whenever using the Annex B byte stream format. It conceptually belongs
to the following NAL unit.
The third one is the first two bytes of the
start_code_prefix_one_3bytes. Their presence is mandatory for every NAL
unit when using the Annex B byte stream format. The belong to the
following NAL unit.
The fourth one is the cabac_zero_word, one or more of which can appear
after the RBSP trailing bits inside of a NAL unit when CABAC entropy
coding is being used. These fall within the start code emulation
prevention process and inside of the NAL unit itself (in section 6
rather than Annex B). They are probably relatively rare to find in
practice. They can be present even when the Annex B byte stream NAL
unit is not in use.
Finally, after the end of a NAL unit and before the end of its Annex B
associated "byte stream NAL unit", there can be one or more
trailing_zero_8bits. These are optional. They are conceptually
assigned to the preceding NAL unit.
Best Regards,
Gary Sullivan
+> -----Original Message-----
+> From: mp4-tech-bounces lists.mpegif.org
+> [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Alex
+> Sent: Saturday, October 21, 2023 5:44 AM
+> To: Luqman; mp4-tech lists.mpegif.org
+> Subject: Re: [Mp4-tech] why are there 4 bytes 0x00000001
+> instead of 3 bytes inevery NALU?
+>
+> Hi,
+>
+> > I have also verified this. There are 4 byte
+> > (0x00000001) in the start of every
+> > NALU even in case it is not the first NALU of an
+> > access unit.
+> >
+> > >
+> > >Could someone please explain us this "mystery"?
+> >
+> > Hope someone understanding this issue can elaborate
+> > on this.
+>
+>
+> start_prefix_code_3bytes is actually 3 bytes only.
+>
+> 1 byte 0x00 comes from the previous NAL unit, which is
+> trailing zero byte;
+>
+>
+> --- Luqman <luqman_ngs gmx.net> wrote:
+>
+> > > Shankar Manuel Aghito wanted us to know:
+> >
+> > >Hi Luqman,
+> > >
+> > >I've look at the standard and I can see what you
+> > say, it seems that that
+> > >zero_byte before start_code_prefix_one_3bytes
+> > should be present only in
+> > >SPS, PPS and in the first NALU of each access unit.
+> > I don't know why (I
+> > >guess that it is because we are missing something
+> > in understanding the
+> > >standard), but I am quite sure that the reference
+> > software put 4 bytes
+> > >0x00000001 in the beginning of each NALU, also for
+> > multiple NALUs per
+> > >picture, i.e. when there are NALUs that are not the
+> > first in the access
+> > >unit. Try my matlab script, posted in "RE:
+> > [Mp4-tech] H264 Corrupted
+> > >Bitstreams" a couple of days ago.
+> >
+> > I have also verified this. There are 4 byte
+> > (0x00000001) in the start of every
+> > NALU even in case it is not the first NALU of an
+> > access unit.
+> >
+> > >
+> > >Could someone please explain us this "mystery"?
+> >
+> > Hope someone understanding this issue can elaborate
+> > on this.
+> >
+> > >
+> > >Also you could try with JM11. I've read of problems
+> > with JM10.2 related
+> > >to use of multiple slices/picture.
+> >
+> > I skipping NALUs and then decoding with both JM10.2
+> > and JM11.0 versions.
+> > But there were same errors in the end. The decoding
+> > looked fine and a
+> > small number of frames were dropped. I think it is
+> > acceptable, but what
+> > annoys me are the warnings/error messages at the end
+> > of decoding
+> > process.
+> >
+> > >
+> > >If you still have problems, send encoder/decoder
+> > output and also
+> > >configuration files
+> > >
+> > I will attach configuration files and encoder and
+> > decoder output for
+> > your opinion.
+> >
+> >
+> > >---
+> > >
+> > >About the error concealment parameter in the
+> > decoder configuration file.
+> > >2 (motion copy) often is the best in my experience.
+> > But you will only
+> > >see differences when you remove a whole picture,
+> > i.e. all the NALUs of
+> > >one picture. If you loose only some parts of a
+> > picture, different
+> > >concealment algorithms are used, but you cannot
+> > control that in the
+> > >config file.
+> >
+> > I think all NALUs in a picture/frame are sent in
+> > sequence and there is
+> > no interleaving of NALUs of different pictures. Is
+> > it true? Can someome
+> > shed some light on that? Is there interleaving in
+> > referece software JM
+> > implemented?
+> >
+> > Anyhow, I did not see any difference when 2 (motion
+> > copy) was activated
+> > in decoder configuration file. I will try to verify
+> > this tomorrow and
+> > then post my results here.
+> >
+> > >
+> > >---
+> > >
+> > >You don't need to have Log2MaxFNumMinus4 soo high!
+> > With
+> > >Log2MaxFNumMinus4=12 then you can encode 2^(12+4)
+> > pictures before the
+> > >counter restarts!!!
+> > >
+> > Ok, thanks for elaborating on this.
+> >
+> > There are 4 attached files to my posting:
+> >
+> > encoder.cfg
+> > decoder.cfg
+> > encod_result: is the output from encoder
+> > drop_and_decod_result: contains output from my NALU
+> > skipping program
+> > (called skip_nalu) and ldecod.dbg.exe
+> >
+> > The last file is very lengthy. If you don't like to
+> > go through it I will
+> > print the ERROR and warnings from decoder produced
+> > during _different_ sessons in the
+> > following:
+> >
+> >
+> > 1) ERROR: failed to find NumCoeff/TrailingOnes
+> > 2) ldecod.dbg.exe: src/vlc.c:479: more_rbsp_data:
+> > Assertion
+> > `byteoffset<bytecount' failed.
+> > Aborted
+> > 3) ERROR: failed to find NumCoeff/TrailingOnes
+> > 4) RegardsROR: failed to find Run
+> > 5) ERROR: failed to find Total Zeros
+> >
+> > Again, these messages were printed during
+> > _different_ sessions of
+> > decoder with different number and places of dropped
+> > NALUs.
+> >
+> > Any idea if it is an expected behaviour from JM
+> > software or not??? I
+> > mean apart from these messages decoder seems to work
+> > as _I_ expected.
+> >
+> > Regards,
+> >
+> > Luqman
+> > > # New Input File Format is as follows
+> > # <ParameterName> = <ParameterValue> # Comment
+> > #
+> > # See configfile.h for a list of supported
+> > ParameterNames
+> >
+> >
+> >
+> #############################################################
+> #############################
+> > # Files
+> >
+> #############################################################
+> #############################
+> > InputFile = "foreman.qcif" # Link to
+> > Input sequence
+> > InputHeaderLength = 0 # If the inputfile
+> > has a header, state it's length in byte here
+> > StartFrame = 0 # Start frame for
+> > encoding. (0-N)
+> > ###### LM: FramesToBeEncode: 2 #original
+> > ##################
+> > FramesToBeEncoded = 100 # Number of frames to
+> > be coded
+> > FrameRate = 30.0 # Frame Rate per
+> > second (0.1-100.0)
+> > SourceWidth = 176 # Frame width
+> > SourceHeight = 144 # Frame height
+> > TraceFile = "trace_enc.txt"
+> > ReconFile = "test_rec.yuv"
+> > #OutputFile = "test.264"
+> > OutputFile = "test.264_nskipped"
+> >
+> >
+> #############################################################
+> #############################
+> > # Encoder Control
+> >
+> #############################################################
+> #############################
+> > ProfileIDC = 88 # Profile IDC
+> > (66=baseline, 77=main, 88=extended; FREXT Profiles:
+> > 100=High, 110=High 10, 122=High 4:2:2, 144=High
+> > 4:4:4, for params see below)
+> > LevelIDC = 10 # Level IDC (e.g. 20 =
+> > level 2.0)
+> >
+> > IntraPeriod = 0 # Period of I-Frames
+> > (0=only first)
+> > EnableOpenGOP = 0 # Support for open GOPs
+> > (0: disabled, 1: enabled)
+> > IDRIntraEnable = 1 # Force IDR Intra
+> > (0=disable 1=enable)
+> > QPISlice = 28 # Quant. param for I
+> > Slices (0-51)
+> > QPPSlice = 28 # Quant. param for P
+> > Slices (0-51)
+> > FrameSkip = 0 # Number of frames to be
+> > skipped in input (e.g 2 will code every third frame)
+> > ChromaQPOffset = 0 # Chroma QP offset
+> > (-51..51)
+> > UseHadamard = 1 # Hadamard transform
+> > (0=not used, 1=used for all subpel positions, 2=use
+> > only for qpel)
+> > DisableSubpelME = 0 # Disable Subpixel
+> > Motion Estimation (0=off/default, 1=on)
+> > SearchRange = 16 # Max search range
+> > NumberReferenceFrames = 1 # Number of previous
+> > frames used for inter motion search (1-16)
+> > PList0References = 0 # P slice List 0
+> > reference override (0 disable, N <=
+> > NumberReferenceFrames)
+> > Log2MaxFNumMinus4 = 12 # Sets
+> > log2_max_frame_num_minus4 (-1 : based on
+> > FramesToBeEncoded/Auto, >=0 : Log2MaxFNumMinus4)
+> > Log2MaxPOCLsbMinus4 = -1 # Sets
+> > log2_max_pic_order_cnt_lsb_minus4 (-1 : Auto, >=0 :
+> > Log2MaxPOCLsbMinus4)
+> >
+> > GenerateMultiplePPS = 0 # Transmit multiple
+> > parameter sets. Currently parameters basically
+> > enable all WP modes (0: diabled, 1: enabled)
+> > ResendPPS = 0 # Resend PPS (with
+> > pic_parameter_set_id 0) for every coded Frame/Field
+> > pair (0: disabled, 1: enabled)
+> >
+> > MbLineIntraUpdate = 0 # Error robustness(extra
+> > intra macro block updates)(0=off, N: One GOB every N
+> > frames are intra coded)
+> > RandomIntraMBRefresh = 10 # Forced intra MBs per
+> > picture
+> > InterSearch16x16 = 1 # Inter block search
+> > 16x16 (0=disable, 1=enable)
+> > InterSearch16x8 = 1 # Inter block search
+> > 16x8 (0=disable, 1=enable)
+> > InterSearch8x16 = 1 # Inter block search
+> > 8x16 (0=disable, 1=enable)
+> > InterSearch8x8 = 1 # Inter block search
+> > 8x8 (0=disable, 1=enable)
+> > InterSearch8x4 = 1 # Inter block search
+> > 8x4 (0=disable, 1=enable)
+> > InterSearch4x8 = 1 # Inter block search
+> > 4x8 (0=disable, 1=enable)
+> > InterSearch4x4 = 1 # Inter block search
+> > 4x4 (0=disable, 1=enable)
+> >
+> > IntraDisableInterOnly = 0 # Apply Disabling Intra
+> > conditions only to Inter Slices
+> > (0:disable/default,1: enable)
+> > Intra4x4ParDisable = 0 # Disable Vertical &
+> > Horizontal 4x4
+> > Intra4x4DiagDisable = 0 # Disable Diagonal
+> > 45degree 4x4
+> > Intra4x4DirDisable = 0 # Disable Other Diagonal
+> > 4x4
+> > Intra16x16ParDisable = 0 # Disable Vertical &
+> > Horizontal 16x16
+> > Intra16x16PlaneDisable = 0 # Disable Planar 16x16
+> > ChromaIntraDisable = 0 # Disable Intra Chroma
+> > modes other than DC
+> > EnableIPCM = 1 # Enable IPCM macroblock
+> > mode
+> >
+> > DisposableP = 0 # Enable Disposable P
+> > slices in the primary layer (0: disable/default, 1:
+> > enable)
+> > DispPQPOffset = 0 # Quantizer offset for
+> > disposable P slices (0: default)
+> >
+> >
+> #############################################################
+> #############################
+> > # B Slices
+> >
+> #############################################################
+> #############################
+> >
+> > NumberBFrames = 0 # Number of B coded
+> > frames inserted (0=not used)
+> > #NumberBFrames = 1 # Number of B coded
+> > frames inserted (0=not used)
+> > QPBSlice = 30 # Quant. param for B
+> > slices (0-51)
+> > BRefPicQPOffset = 0 # Quantization offset
+> > for reference B coded pictures (-51..51)
+> > DirectModeType = 1 # Direct Mode Type
+> > (0:Temporal 1:Spatial)
+> > DirectInferenceFlag = 1 # Direct Inference Flag
+> > (0: Disable 1: Enable)
+> > BList0References = 0 # B slice List 0
+> > reference override (0 disable, N <=
+> > NumberReferenceFrames)
+> > BList1References = 1 # B slice List 1
+> > reference override (0 disable, N <=
+> > NumberReferenceFrames)
+> > # 1 List1 reference is
+> > usually recommended for normal GOP Structures.
+> > # A larger value is
+> > usually more appropriate if a more flexible
+> > # structure is used
+> > (i.e. using PyramidCoding)
+> >
+> > BReferencePictures = 0 # Referenced B coded
+> > pictures (0=off, 1=on)
+> >
+> > PyramidCoding = 0 # B pyramid (0= off, 1=
+> > 2 layers, 2= 2 full pyramid, 3 = explicit)
+> > PyramidLevelQPEnable = 1 # Adjust QP based on
+> > Pyramid Level (in increments of 1). Overrides
+> > BRefPicQPOffset behavior.(0=off, 1=on)
+> > ExplicitPyramidFormat = "b2r28b0e30b1e30b3e30b4e30"
+> > # Explicit Enhancement GOP. Format is
+> > {FrameDisplay_orderReferenceQP}.
+> >
+> > # Valid values for reference type is r:reference,
+> > e:non reference.
+> > PyramidRefReorder = 1 # Reorder References
+> > according to Poc distance for PyramidCoding (0=off,
+> > 1=enable)
+> > PocMemoryManagement = 1 # Memory management
+> > based on Poc Distances for PyramidCoding (0=off,
+> > 1=on)
+> >
+> > BiPredMotionEstimation = 0 # Enable Bipredictive
+> > based Motion Estimation (0:disabled, 1:enabled)
+> > BiPredMERefinements = 3 # Bipredictive ME extra
+> > refinements (0: single, N: N extra refinements (1
+> > default)
+> > BiPredMESearchRange = 16 # Bipredictive ME
+> > Search range (8 default). Note that range is halved
+> > for every extra refinement.
+> > BiPredMESubPel = 1 # Bipredictive ME
+> > Subpixel Consideration (0: disabled, 1: single
+> > level, 2: dual level)
+> >
+> >
+> >
+> #############################################################
+> #############################
+> > # SP Frames
+> >
+> #############################################################
+> #############################
+> >
+> > SPPicturePeriodicity = 0 # SP-Picture Periodicity
+> > (0=not used)
+> > QPSPSlice = 36 # Quant. param of
+> > SP-Slices for Prediction Error (0-51)
+> > QPSP2Slice = 35 # Quant. param of
+> > SP-Slices for Predicted Blocks (0-51)
+> > SI_FRAMES = 0 # SI frame encoding flag
+> > (0=not used, 1=used)
+> > SP_output = 0 # Controls whether
+> > coefficients will be output to encode switching SP
+> > frames (0=no, 1=yes)
+> > SP_output_name = "low_quality.dat" #
+> > Filename for SP output coefficients
+> >
+> === message truncated ===> test.264
+> ........H.26L coded
+> > bitstream
+> > test_dec.yuv ........Output file,
+> > YUV/RGB
+> > test_rec.yuv ........Ref sequence (for
+> > SNR)
+> > 1 ........Write 4:2:0 chroma
+> > components for monochrome streams
+> > 0 ........NAL mode (0=Annex
+> > B, 1: RTP packets)
+> > 0 ........SNR computation
+> > offset
+> > 2 ........Poc Scale (1 or 2)
+> > 500000 ........Rate_Decoder
+> > 104000 ........B_decoder
+> > 73000 ........F_decoder
+> > leakybucketparam.cfg ........LeakyBucket Params
+> > 0 ........Err
+> > Concealment(0:Off,1:Frame Copy,2:Motion Copy)
+> > 2 ........Reference POC gap
+> > (2: IPP (Default), 4: IbP / IpP)
+> > 2 ........POC gap (2: IPP
+> > /IbP/IpP (Default), 4: IPP with frame skip = 1 etc.)
+> >
+> >
+> > This is a file containing input parameters to the
+> > JVT H.264/AVC decoder.
+> > The text line following each parameter is discarded
+> > by the decoder.
+> > > Setting Default Parameters...
+> > Parsing Configfile
+> >
+> encoder.cfg..................................................
........................................................................
............................................................
+> >
+> > ------------------------------- JM 10.2 (FRExt)
+> > --------------------------------
+> > Input YUV file : video_source
+> > Output H.264 bitstream :
+> > test.264_nskipped
+> > Output YUV file : test_rec.yuv
+> > YUV Format : YUV 4:2:0
+> > Frames to be encoded I-P/B : 100/0
+> > PicInterlace / MbInterlace : 0/0
+> > Transform8x8Mode : 0
+> >
+> -------------------------------------------------------------
+> ------------------
+> > Frame Bit/pic QP SnrY SnrU SnrV
+> > Time(ms) MET(ms) Frm/Fld Ref
+> >
+> -------------------------------------------------------------
+> ------------------
+> > 0000(NVB) 168
+> > 0000(IDR) 27688 28 36.878 39.761 42.034
+> > 243 0 FRM 1
+> > 0001(P) 6272 28 36.214 39.463 41.563
+> > 829 469 FRM 1
+> > 0002(P) 7456 28 36.164 39.215 41.344
+> > 831 459 FRM 1
+> > 0003(P) 6624 28 35.872 39.059 41.004
+> > 804 462 FRM 1
+> > 0004(P) 6008 28 35.689 38.980 40.917
+> > 803 443 FRM 1
+> > 0005(P) 6816 28 35.657 38.916 40.795
+> > 803 460 FRM 1
+> > 0006(P) 6928 28 35.474 39.152 40.755
+> > 805 455 FRM 1
+> > 0007(P) 7416 28 35.562 39.175 40.805
+> > 801 457 FRM 1
+> > 0008(P) 6264 28 35.481 39.052 40.573
+> > 797 445 FRM 1
+> > 0009(P) 5896 28 35.512 38.998 40.790
+> > 800 460 FRM 1
+> > 0010(P) 6448 28 35.573 38.931 40.543
+> > 845 487 FRM 1
+> > 0011(P) 6832 28 35.568 38.905 40.422
+> > 801 430 FRM 1
+> > 0012(P) 7032 28 35.482 38.900 40.525
+> > 815 463 FRM 1
+> > 0013(P) 5704 28 35.300 38.908 40.671
+> > 878 496 FRM 1
+> > 0014(P) 4968 28 35.301 38.742 40.583
+> > 837 479 FRM 1
+> > 0015(P) 5736 28 35.218 38.654 40.486
+> > 805 460 FRM 1
+> > 0016(P) 6720 28 35.322 38.811 40.202
+> > 805 442 FRM 1
+> > 0017(P) 6776 28 35.400 38.761 40.295
+> > 797 451 FRM 1
+> > 0018(P) 6520 28 35.451 38.732 40.177
+> > 800 450 FRM 1
+> > 0019(P) 6944 28 35.420 38.570 40.099
+> > 801 458 FRM 1
+> > 0020(P) 7408 28 35.495 38.343 40.230
+> > 809 451 FRM 1
+> > 0021(P) 8080 28 35.432 38.334 40.005
+> > 804 449 FRM 1
+> > 0022(P) 7960 28 35.335 38.336 39.792
+> > 800 452 FRM 1
+> > 0023(P) 6344 28 35.393 38.423 39.989
+> > 804 458 FRM 1
+> > 0024(P) 6328 28 35.256 38.392 39.847
+> > 807 454 FRM 1
+> > 0025(P) 5664 28 35.197 38.337 39.762
+> > 819 450 FRM 1
+> > 0026(P) 6768 28 35.349 38.385 39.754
+> > 802 438 FRM 1
+> > 0027(P) 6584 28 35.375 38.377 39.789
+> > 799 452 FRM 1
+> > 0028(P) 7264 28 35.503 38.542 39.802
+> > 805 454 FRM 1
+> > 0029(P) 6752 28 35.443 38.528 39.809
+> > 874 510 FRM 1
+> > 0030(P) 6744 28 35.320 38.412 39.989
+> > 809 459 FRM 1
+> > 0031(P) 7304 28 35.295 38.368 40.031
+> > 807 461 FRM 1
+> > 0032(P) 7864 28 35.338 38.600 40.147
+> > 834 470 FRM 1
+> > 0033(P) 6944 28 35.302 38.458 40.145
+> > 849 467 FRM 1
+> > 0034(P) 6336 28 35.278 38.401 40.048
+> > 820 449 FRM 1
+> > 0035(P) 7160 28 35.311 38.562 40.193
+> > 813 460 FRM 1
+> > 0036(P) 8464 28 35.268 38.686 40.381
+> > 810 444 FRM 1
+> > 0037(P) 7040 28 35.293 38.507 40.094
+> > 846 474 FRM 1
+> > 0038(P) 6840 28 35.172 38.576 40.341
+> > 822 453 FRM 1
+> > 0039(P) 6032 28 35.171 38.486 40.517
+> > 837 452 FRM 1
+> > 0040(P) 6424 28 35.235 38.429 40.300
+> > 840 473 FRM 1
+> > 0041(P) 7848 28 35.367 38.588 40.413
+> > 822 461 FRM 1
+> > 0042(P) 7400 28 35.381 38.524 40.561
+> > 830 469 FRM 1
+> > 0043(P) 6664 28 35.260 38.677 40.692
+> > 825 463 FRM 1
+> > 0044(P) 5944 28 35.314 38.588 40.344
+> > 838 461 FRM 1
+> > 0045(P) 6232 28 35.342 38.718 40.523
+> > 827 473 FRM 1
+> > 0046(P) 6848 28 35.433 38.730 40.246
+> > 826 475 FRM 1
+> > 0047(P) 6288 28 35.492 38.762 40.266
+> > 862 478 FRM 1
+> > 0048(P) 6504 28 35.483 38.660 40.181
+> > 818 449 FRM 1
+> > 0049(P) 7032 28 35.490 38.703 40.325
+> > 823 468 FRM 1
+> > 0050(P) 6672 28 35.548 38.745 40.322
+> > 836 468 FRM 1
+> > 0051(P) 7424 28 35.517 38.725 40.407
+> > 838 470 FRM 1
+> > 0052(P) 7312 28 35.582 38.577 40.452
+> > 843 470 FRM 1
+> > 0053(P) 6552 28 35.613 38.850 40.417
+> > 824 472 FRM 1
+> > 0054(P) 4792 28 35.426 38.821 40.606
+> > 809 451 FRM 1
+> > 0055(P) 5160 28 35.485 38.927 40.391
+> > 807 456 FRM 1
+> > 0056(P) 5496 28 35.382 38.791 40.393
+> > 817 467 FRM 1
+> > 0057(P) 5016 28 35.415 38.802 40.328
+> > 819 456 FRM 1
+> > 0058(P) 4992 28 35.451 38.847 40.395
+> > 818 453 FRM 1
+> > 0059(P) 3704 28 35.379 38.781 40.418
+> > 854 477 FRM 1
+> > 0060(P) 4840 28 35.397 38.736 40.377
+> > 816 466 FRM 1
+> > 0061(P) 5952 28 35.389 38.768 40.318
+> > 818 475 FRM 1
+> > 0062(P) 7936 28 35.312 38.732 40.410
+> > 843 473 FRM 1
+> > 0063(P) 9888 28 35.272 38.544 40.405
+> > 821 454 FRM 1
+> > 0064(P) 8696 28 35.255 38.609 40.341
+> > 814 457 FRM 1
+> > 0065(P) 8080 28 35.308 38.451 40.515
+> > 812 449 FRM 1
+> > 0066(P) 8280 28 35.180 38.470 40.197
+> > 808 438 FRM 1
+> > 0067(P) 9072 28 35.311 38.436 40.287
+> > 813 441 FRM 1
+> > 0068(P) 9040 28 35.287 38.386 40.293
+> > 814 448 FRM 1
+> > 0069(P) 8856 28 35.381 38.518 40.458
+> > 815 462 FRM 1
+> > 0070(P) 9192 28 35.319 38.464 40.608
+> > 812 456 FRM 1
+> > 0071(P) 9200 28 35.353 38.554 40.694
+> > 810 459 FRM 1
+> > 0072(P) 9344 28 35.440 38.664 40.873
+> > 822 448 FRM 1
+> > 0073(P) 7432 28 35.386 38.804 40.950
+> > 822 458 FRM 1
+> > 0074(P) 7624 28 35.415 38.930 40.898
+> > 808 450 FRM 1
+> > 0075(P) 8472 28 35.314 39.189 41.191
+> > 811 456 FRM 1
+> > 0076(P) 8560 28 35.362 39.126 41.510
+> > 811 446 FRM 1
+> > 0077(P) 7792 28 35.459 38.956 41.368
+> > 853 477 FRM 1
+> > 0078(P) 7120 28 35.425 39.113 41.530
+> > 873 477 FRM 1
+> > 0079(P) 6776 28 35.427 39.161 41.502
+> > 839 464 FRM 1
+> > 0080(P) 7520 28 35.363 39.295 41.409
+> > 838 475 FRM 1
+> > 0081(P) 7024 28 35.358 39.136 41.263
+> > 844 486 FRM 1
+> > 0082(P) 6832 28 35.431 39.202 41.389
+> > 830 454 FRM 1
+> > 0083(P) 6680 28 35.443 39.070 41.335
+> > 866 500 FRM 1
+> > 0084(P) 6224 28 35.433 39.023 41.133
+> > 830 469 FRM 1
+> > 0085(P) 6376 28 35.512 39.026 41.113
+> > 814 476 FRM 1
+> > 0086(P) 7784 28 35.620 39.187 41.265
+> > 816 465 FRM 1
+> > 0087(P) 6440 28 35.671 39.248 41.358
+> > 852 474 FRM 1
+> > 0088(P) 6536 28 35.565 39.489 41.595
+> > 841 469 FRM 1
+> > 0089(P) 6808 28 35.606 39.426 41.621
+> > 828 462 FRM 1
+> > 0090(P) 6752 28 35.598 39.389 41.593
+> > 812 472 FRM 1
+> >
+> === message truncated ===>
+> > skip_nalu ----------means output from dropping
+> > utility-------------------------
+> >
+> > NALU 5: skipping NALU...
+> > NALU 14: skipping NALU...
+> > NALU 23: skipping NALU...
+> > NALU 32: skipping NALU...
+> > NALU 41: skipping NALU...
+> > NALU 50: skipping NALU...
+> > NALU 65: skipping NALU...
+> > NALU 73: skipping NALU...
+> > NALU 81: skipping NALU...
+> > NALU 88: skipping NALU...
+> > NALU 92: skipping NALU...
+> > NALU 95: skipping NALU...
+> > NALU 100: skipping NALU...
+> > NALU 108: skipping NALU...
+> > NALU 116: skipping NALU...
+> >
+> >
+> >
+> =============================================================
+> > skipped / total NALUs: 15 / 900 (excl. 1 SPS + 1
+> > PPS)
+> >
+> >
+> > ldecod.dbg.exe -----means following is the output
+> > from decoder-------------
+> >
+> > ----------------------------- JM 10.2 (FRExt)
+> > -----------------------------
+> > Decoder config file : (null)
+> >
+> -------------------------------------------------------------
+> -------------
+> > Input H.264 bitstream : test.264
+> > Output decoded YUV :
+> > test_dec.yuv
+> > Output status file : log.dec
+> > Input reference file :
+> > test_rec.yuv
+> >
+> -------------------------------------------------------------
+> -------------
+> > POC must = frame# or field# for SNRs to be correct
+> >
+> -------------------------------------------------------------
+> -------------
+> > Frame POC Pic# QP SnrY SnrU SnrV
+> > Y:U:V Time(ms)
+> >
+> -------------------------------------------------------------
+> -------------
+> > 0000(I) 0 0 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0001(P) 2 1 28 0.0000 0.0000
+> > 0.0000 4:2:0 67
+> > 0002(P) 4 2 28 0.0000 0.0000
+> > 0.0000 4:2:0 67
+> > 0003(P) 6 3 28 0.0000 0.0000
+> > 0.0000 4:2:0 69
+> > 0004(P) 8 4 28 0.0000 0.0000
+> > 0.0000 4:2:0 74
+> > 0005(P) 10 5 28 0.0000 0.0000
+> > 0.0000 4:2:0 71
+> > 0006(P) 12 6 28 0.0000 0.0000
+> > 0.0000 4:2:0 72
+> > 0007(P) 14 7 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0008(P) 16 8 28 0.0000 0.0000
+> > 0.0000 4:2:0 72
+> > 0009(P) 18 9 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0010(P) 20 10 28 0.0000 0.0000
+> > 0.0000 4:2:0 71
+> > 0011(P) 22 11 28 0.0000 0.0000
+> > 0.0000 4:2:0 73
+> > 0012(P) 24 12 28 0.0000 0.0000
+> > 0.0000 4:2:0 71
+> > 0013(P) 26 13 28 0.0000 0.0000
+> > 0.0000 4:2:0 73
+> > 0014(P) 28 14 28 0.0000 0.0000
+> > 0.0000 4:2:0 65
+> > 0015(P) 30 15 28 0.0000 0.0000
+> > 0.0000 4:2:0 74
+> > 0016(P) 32 16 28 0.0000 0.0000
+> > 0.0000 4:2:0 77
+> > 0017(P) 34 17 28 0.0000 0.0000
+> > 0.0000 4:2:0 72
+> > 0018(P) 36 18 28 0.0000 0.0000
+> > 0.0000 4:2:0 66
+> > 0019(P) 38 19 28 0.0000 0.0000
+> > 0.0000 4:2:0 74
+> > 0020(P) 40 20 28 0.0000 0.0000
+> > 0.0000 4:2:0 76
+> > 0021(P) 42 21 28 0.0000 0.0000
+> > 0.0000 4:2:0 77
+> > 0022(P) 44 22 28 0.0000 0.0000
+> > 0.0000 4:2:0 76
+> > 0023(P) 46 23 28 0.0000 0.0000
+> > 0.0000 4:2:0 71
+> > 0024(P) 48 24 28 0.0000 0.0000
+> > 0.0000 4:2:0 92
+> > 0025(P) 50 25 28 0.0000 0.0000
+> > 0.0000 4:2:0 79
+> > 0026(P) 52 26 28 0.0000 0.0000
+> > 0.0000 4:2:0 69
+> > 0027(P) 54 27 28 0.0000 0.0000
+> > 0.0000 4:2:0 68
+> > 0028(P) 56 28 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0029(P) 58 29 28 0.0000 0.0000
+> > 0.0000 4:2:0 73
+> > 0030(P) 60 30 28 0.0000 0.0000
+> > 0.0000 4:2:0 76
+> > 0031(P) 62 31 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0032(P) 64 32 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0033(P) 66 33 28 0.0000 0.0000
+> > 0.0000 4:2:0 79
+> > 0034(P) 68 34 28 0.0000 0.0000
+> > 0.0000 4:2:0 71
+> > 0035(P) 70 35 28 0.0000 0.0000
+> > 0.0000 4:2:0 77
+> > 0036(P) 72 36 28 0.0000 0.0000
+> > 0.0000 4:2:0 80
+> > 0037(P) 74 37 28 0.0000 0.0000
+> > 0.0000 4:2:0 74
+> > 0038(P) 76 38 28 0.0000 0.0000
+> > 0.0000 4:2:0 70
+> > 0039(P) 78 39 28 0.0000 0.0000
+> > 0.0000 4:2:0 71
+> > 0040(P) 80 40 28 0.0000 0.0000
+> > 0.0000 4:2:0 68
+> > 0041(P) 82 41 28 0.0000 0.0000
+> > 0.0000 4:2:0 72
+> > 0042(P) 84 42 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0043(P) 86 43 28 0.0000 0.0000
+> > 0.0000 4:2:0 74
+> > 0044(P) 88 44 28 0.0000 0.0000
+> > 0.0000 4:2:0 70
+> > 0045(P) 90 45 28 0.0000 0.0000
+> > 0.0000 4:2:0 72
+> > 0046(P) 92 46 28 0.0000 0.0000
+> > 0.0000 4:2:0 73
+> > 0047(P) 94 47 28 0.0000 0.0000
+> > 0.0000 4:2:0 68
+> > 0048(P) 96 48 28 0.0000 0.0000
+> > 0.0000 4:2:0 99
+> > 0049(P) 98 49 28 0.0000 0.0000
+> > 0.0000 4:2:0 74
+> > 0050(P) 100 50 28 0.0000 0.0000
+> > 0.0000 4:2:0 80
+> > 0051(P) 102 51 28 0.0000 0.0000
+> > 0.0000 4:2:0 76
+> > 0052(P) 104 52 28 0.0000 0.0000
+> > 0.0000 4:2:0 76
+> > 0053(P) 106 53 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0054(P) 108 54 28 0.0000 0.0000
+> > 0.0000 4:2:0 67
+> > 0055(P) 110 55 28 0.0000 0.0000
+> > 0.0000 4:2:0 65
+> > 0056(P) 112 56 28 0.0000 0.0000
+> > 0.0000 4:2:0 60
+> > 0057(P) 114 57 28 0.0000 0.0000
+> > 0.0000 4:2:0 59
+> > 0058(P) 116 58 28 0.0000 0.0000
+> > 0.0000 4:2:0 61
+> > 0059(P) 118 59 28 0.0000 0.0000
+> > 0.0000 4:2:0 57
+> > 0060(P) 120 60 28 0.0000 0.0000
+> > 0.0000 4:2:0 62
+> > 0061(P) 122 61 28 0.0000 0.0000
+> > 0.0000 4:2:0 64
+> > 0062(P) 124 62 28 0.0000 0.0000
+> > 0.0000 4:2:0 72
+> > 0063(P) 126 63 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0064(P) 128 64 28 0.0000 0.0000
+> > 0.0000 4:2:0 79
+> > 0065(P) 130 65 28 0.0000 0.0000
+> > 0.0000 4:2:0 79
+> > 0066(P) 132 66 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0067(P) 134 67 28 0.0000 0.0000
+> > 0.0000 4:2:0 78
+> > 0068(P) 136 68 28 0.0000 0.0000
+> > 0.0000 4:2:0 80
+> > 0069(P) 138 69 28 0.0000 0.0000
+> > 0.0000 4:2:0 78
+> > 0070(P) 140 70 28 0.0000 0.0000
+> > 0.0000 4:2:0 78
+> > 0071(P) 142 71 28 0.0000 0.0000
+> > 0.0000 4:2:0 78
+> > 0072(P) 144 72 28 0.0000 0.0000
+> > 0.0000 4:2:0 81
+> > 0073(P) 146 73 28 0.0000 0.0000
+> > 0.0000 4:2:0 77
+> > 0074(P) 148 74 28 0.0000 0.0000
+> > 0.0000 4:2:0 78
+> > 0075(P) 150 75 28 0.0000 0.0000
+> > 0.0000 4:2:0 75
+> > 0076(P) 152 76 28 0.0000 0.0000
+> > 0.0000 4:2:0 77
+> > 0077(P) 154 77 28 0.0000 0.0000
+> > 0.0000 4:2:0 77
+> >
+> === message truncated ===>
+> _______________________________________________
+> > NOTE: Please use clear subject lines for your posts.
+> > Include [audio, [video], [systems], [general] or
+> > another apppropriate identifier to indicate the type
+> > of question you have.
+> >
+> > Note: Conduct on the mailing list is subject to the
+> > Antitrust guidelines found at
+> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant
+> itrust.php
+>
+>
+> --
+> Regards,
+> Alex
+>
+> __________________________________________________
+> Do You Yahoo!?
+> Tired of spam? Yahoo! Mail has the best spam protection around
+> http://mail.yahoo.com
+> _______________________________________________
+> NOTE: Please use clear subject lines for your posts. Include
+> [audio, [video], [systems], [general] or another
+> apppropriate identifier to indicate the type of question you have.
+>
+> Note: Conduct on the mailing list is subject to the
+> Antitrust guidelines found at
+> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant
+> itrust.php
+>
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