[Mp4-tech] Getting frames belonging to different partition usingdata-partitioning

[Wesley De Neve]

Dear Dani,
To know the partition the coded data of a slice belongs to, you need to know 
the value of the nal_unit_type syntax element (each partition is put into a 
separate NAL unit, where each such NAL unit is characterized by a different 
NAL unit type).
The H.264/AVC defines the following mapping:
nal_unit_type 1 denotes 'Coded slice of a non-IDR picture'
nal_unit_type 2 denotes 'Coded slice data partition A'
nal_unit_type 3 denotes 'Coded slice data partition B'
nal_unit_type 4 denotes 'Coded slice data partition C'
Best regards,
Wesley De Neve
Dani Camps wrote:
> Dear all,
>
> I am using the JM11 H264 encoder. I use the option of
> data partitioning, and I am interested in obtaining
> the traces (time size) of the frames belonging to each
> partition, afterwards I will input these traces to a
> simulator. My problem is that I can encode the video
> using data partitioing but from the log I can not
> distinguish to which partition (A,B or C) each frame
> belongs.
>
> The output I can read from the log for each frame at
> maximum verbose mode is:
>
> Frame
> Bit/pic
> WP QP
> SnrY
> SnrU
> SnrV
> Time(ms)
> MET(ms)
> Frm/Fld
> I
> D
> L0
> L1
> RDP
> Ref
>
> But none of these fields is telling me if the frame
> belongs to partition A, B or C. I can see that I am
> encoding with data partitioning because I have in the
> log:
>
> Data Partitioning Mode            : 3 partitions
>
> Is there any way to know from the log which partition
> each frame belongs to or I am doing something
> completely wrong?
>
> Thanks in advance
>
> Daniel Camps
>
>
>
>
>
>
>
>
> ____________________________________________________________________________________
> Sponsored Link
>
> Mortgage rates near 39yr lows.
> $310k for $999/mo. Calculate new payment!
> www.LowerMyBills.com/lre
> _______________________________________________
> 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-Antitrust.php