On 2018/1/11 9:26, wm4 wrote:
> On Thu, 11 Jan 2018 09:11:08 +0800
> Jun Zhao <mypopy...@gmail.com> wrote:
>
>> On 2018/1/11 8:45, wm4 wrote:
>>> On Tue, 2 Jan 2018 13:59:12 +0800
>>> Jun Zhao <mypopy...@gmail.com> wrote:
>>>
>>>> From e030510864c28d4b17c8d1eb09ab00f274bf5dcc Mon Sep 17 00:00:00 2001
>>>> From: Jun Zhao <jun.z...@intel.com>
>>>> Date: Tue, 2 Jan 2018 13:55:29 +0800
>>>> Subject: [PATCH] doc/codecs: Add missing documentation for hwaccel_flags.
>>>>
>>>> document the hwaccel_flags option for decoding.
>>>>
>>>> Signed-off-by: Jun Zhao <jun.z...@intel.com>
>>>> ---
>>>> doc/codecs.texi | 27 +++++++++++++++++++++++++++
>>>> 1 file changed, 27 insertions(+)
>>>>
>>>> diff --git a/doc/codecs.texi b/doc/codecs.texi
>>>> index 7e20374334..190f03b293 100644
>>>> --- a/doc/codecs.texi
>>>> +++ b/doc/codecs.texi
>>>> @@ -1254,6 +1254,33 @@ ffprobe -dump_separator "
>>>> Maximum number of pixels per image. This value can be used to avoid out of
>>>> memory failures due to large images.
>>>>
>>>> +@item hwaccel_flags @var{flags} (@emph{decoding,video})
>>>> +Set hardware accelerated decoding flags. (if active)
>>>> +
>>>> +Possible values:
>>>> +@table @samp
>>>> +@item ignore_level
>>>> +Ignore level, should be used for decoding even if the codec level used is
>>>> unknown
>>>> +or higher than the maximum supported level reported by the hardware
>>>> driver.
>>>> +
>>>> +It's generally a good idea to pass this flag unless you have a specific
>>>> +reason not to, as hardware tends to under-report supported levels.
>>>> +@item allow_high_depth
>>>> +Allow to output YUV pixel formats with a different chroma sampling than
>>>> 4:2:0
>>>> +and/or other than 8 bits per component
>>>> +@item allow_profile_mismatch
>>> This applies only to the legacy vdpau API. (The doxygen should probably
>>> be updated about this.)
>> I think VA-API decoder used the allow_profile_mismatch.
> I meant the allow_high_depth flag.
Got it， thanks the clarify.
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