[FFmpeg-user] Problem with pixel format and/or missing constant

[Mark Filipak]

On 03/11/2020 06:45 PM, Carl Eugen Hoyos wrote:
> Am Mi., 11. März 2020 um 23:15 Uhr schrieb Mark Filipak
> <markfilipak.windows+ffmpeg at gmail.com>:
>>
>> On 03/11/2020 06:09 PM, Carl Eugen Hoyos wrote:
>>> Am Mi., 11. März 2020 um 23:05 Uhr schrieb Mark Filipak
>>> <markfilipak.windows+ffmpeg at gmail.com>:
> 
>>>> For what it's worth, though the MPEG encoder specs support full, 16-bit
>>>> monochrome (black-&-white) that, theoretically, would better render
>>>
>>> I didn't know and I am mildly surprised (16bit video is very uncommon).
>>> Otoh, "MPEG encoder spec" is not very precise...
>>>
>>>> monochrome video, all of the modern DVDs that I've encountered
>>>> use YCbCr 4:2:0 for black-&-white movies.
>>>
>>> Because that is what the DVD specification requires.
>>
>> Ah! Well, that explains it. Thanks Carl Eugen. I haven't spent the
>> $5-thousand for the DVD spec.
> 
> This is part of the publicly known, non-secret part of the specification.
> 
>> By the way, of course, I made a silly mistake. I should have written
>> "full, 24-bit monochrome".
> 
> I am curious: Which MPEG specification defines 24-bit monochrome
> encoding?

Oh, gosh, I ran across that long, long ago. Since it's not used for 
DVDs, I just noted it but didn't document it. I'll be on the lookout for 
it and get back to you, but don't hold your breath. :-)

Regards,
Mark.