[FFmpeg-user] Yes or No? About the processing pipeline.

[Mark Filipak]

On 17/06/2025 13.37, Paul B Mahol wrote:
> On Tue, Jun 17, 2025 at 5:33 PM Mark Filipak <
> markfilipak.imdb-at-gmail.com at ffmpeg.org> wrote:
> 
>> On 17/06/2025 13.31, Paul B Mahol wrote:
>>> On Tue, Jun 17, 2025 at 5:24 PM Mark Filipak <
>>> markfilipak.imdb-at-gmail.com at ffmpeg.org> wrote:
>>>
>>>> On 17/06/2025 13.20, Paul B Mahol wrote:
>>>>> On Tue, Jun 17, 2025 at 5:18 PM Mark Filipak <
>>>>> markfilipak.imdb-at-gmail.com at ffmpeg.org> wrote:
>>>>>
>>>>>> On 17/06/2025 13.15, Paul B Mahol wrote:
>>>>>>> On Tue, Jun 17, 2025 at 5:12 PM Mark Filipak <
>>>>>>> markfilipak.imdb-at-gmail.com at ffmpeg.org> wrote:
>>>>>>>
>>>>>>>> Yes (true) or No (false)?
>>>>>>>>
>>>>>>>> If the input is 8-bit ybr420-smpte170m, then the processing pipeline
>>>> is
>>>>>>>> also 8-bit ybr420-smpte170m.
>>>>>>>>
>>>>>>> Depends on all components used in pipeline.
>>>>>>
>>>>>> Sorry. I'm 'talking' about the start of the processing pipeline,
>> coming
>>>>>> out of the decoder.
>>>>>> Let me restate the issue:
>>>>>>
>>>>>> If the input is 8-bit ybr420-smpte170m, then the decoder outputs 8-bit
>>>>>> ybr420-smpte170m.
>>>>>> Yes or No.
>>>>>
>>>>> Definition of decoder is to decode data, not invent new data or alter
>>>> data
>>>>> in any way.
>>>>
>>>> Does that mean 'Yes': Decoders that are fed 8-bit ybr420-smpte170m then
>>>> output 8-bit ybr420-smpte170m?
>>>>
>>>
>>> I write words, In my school I learned much more words than simple: 'Yes'
>>> and 'No'.
>>
>> Good for you.
>>
>> Decoders that are fed 8-bit ybr420-smpte170m then output 8-bit
>> ybr420-smpte170m.
>> Yes or No?
> 
> Maybe.

Paul, you appear to be intentionally keeping FFmpeg users ignorant of the facts.