On 10/18/17 1:31 PM, Devin Heitmueller wrote:
On Oct 6, 2017, at 12:56 PM, Devin Heitmueller <dheitmuel...@ltnglobal.com>
wrote:
From: Devin Heitmueller <dheitmuel...@kernellabs.com>
Hook in libklvanc and use it for output of EIA-708 captions over
SDI. The bulk of this patch is just general support for ancillary
data for the Decklink SDI module - the real work for construction
of the EIA-708 CDP and VANC line construction is done by libklvanc.
Libklvanc can be found at: https://github.com/stoth68000/libklvanc
Signed-off-by: Devin Heitmueller <dheitmuel...@ltnglobal.com>
Any additional technical comments related to this patch, or should I resubmit
for merge?
Devin
I was going to actually test this with some old broadcast equipment I
have just dying for a purpose, but I don't see how to generate
AV_PKT_DATA_A53_CC side packet data except using the Decklink capture. I
have A53 documentation, but it just refers to CEA-708 (or SMPTE 334, or
... what an unraveling ball of yarn it is. Looks like I could spend a
months income on standards just trying to learn how this is encoded).
On a side note, can AV_PKT_DATA_A53_CC be used for something besides
CEA-708? Not sure I understand the line between A53 CC encoding (which
is at least in part what this generates, right?) and CEA-708 (which is
what this takes, right?) and why this side data is called A53_CC?
I know these questions are outside the scope that you were asking...
Deron
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