[FFmpeg-user] MPEG2 Profile Options Integer order wrong

[Limin Wang]

On Wed, Jun 17, 2020 at 12:28:39PM +1000, Bill Crockett wrote:
> ----- Original Message ----- From: "Limin Wang"
> <lance.lmwang at gmail.com>
> To: <ffmpeg-user at ffmpeg.org>
> Sent: Wednesday, June 17, 2020 10:24 AM
> Subject: Re: [FFmpeg-user] MPEG2 Profile Options Integer order wrong
> 
> 
> >On Wed, Jun 17, 2020 at 09:31:47AM +1000, Bill Crockett wrote:
> >>https://ffmpeg.org/ffmpeg-all.html#mpeg2
> >>
> >>Who maintains the documentation on the above and how can I
> >>contact to ask if it is wrong or correct?
> >>
> >>16.15 mpeg2
> >>
> >>MPEG-2 video encoder.
> >>
> >>16.15.1 Options
> >>
> >>profile integer
> >>
> >>    Select the mpeg2 profile to encode:
> >>
> >>    ‘422’
> >>    ‘main’
> >>    ‘ss’
> >>
> >>        Spatially Scalable
> >>    ‘snr’
> >>
> >>        SNR Scalable
> >>    ‘high’
> >>    ‘simple’
> >>
> >>There are no numbers listed, but my guess is the order as is
> >>written and would be "main" = 1 and "high" = 4
> >
> >Yes, it's const string, you can use -profile:v high or -profile:v
> >main to get
> >expect result.
> >
> >>
> >>This is wrong and "high should be 1 and "main" should be 4.
> >
> >If you guess the number by the order, I'll submit a patch to fix
> >it to avoid such
> >confusion, it's not expected.
> >
> >Thanks,
> >Limin Wang
> 
> Thanks for that.
> 
> Before you told me this, I did try the words "high" or "main", but I
> put in quotes either single or double and got errors.
> 
> https://ffmpeg.org/ffmpeg-all.html#Options
> 
> Does MPEG2 still have the -level:v options?  This is all that is said:

You are talking about profile, please do not switch to level, they're different
option.

level didn't support with const option, so you had to use integer for it.

Below is examples for reference:
Main profile and Main level:
-profile:v main -level:v 8

Main profile and high level:
-profile:v main -level:v 4

422 profile and main level:
-profile:v 422 -level:v 5

422 profile and high level:
-profile:v 422 -level:v 2

> 
> level integer (encoding,audio,video)
> Possible values:
> 
> ‘unknown’
> 
> In the past, I found you could use 2, 4, 5, 6. or 8
> 
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-- 
Thanks,
Limin Wang