So I assume there's no way of making it use HWA automatically via some build 
parameters without getting into the code, right? 
I'm using a video source filter which wraps itself around ffmpeg and I need it 
to do the HWA, which it does not. So if I had an auto-HWA-enabled ffmpeg build, 
I could build that filter against it and HWA would work.

12. Nov 2018 16:30 by [email protected] 
<mailto:[email protected]>:


> Hi,
>
> You need to specify hardware accelerator to ffmpeg.
>
> You can give hw acceleration name with 
> -hwaccel option to ffmpeg.
>
> And if you want to use it with any binary then its example code is located at 
> :
>
> doc/examples/hw_decode.c or doc/examples/vaapi_encode.c or
> doc/examples/vaapi_decode.c file
>
> You can compile and use its binary.
>
> Thanks 
> Harshil
>
>> On 12-Nov-2018, at 6:11 PM, <>> [email protected] 
>> <mailto:[email protected]>>> > <>> [email protected] 
>> <mailto:[email protected]>>> > wrote:
>>
>> Hello! 
>> I have a couple of questions about ffmpeg tool. 
>> When I use the ffmpeg tool that was compiled with support of one of the 
>> hardware accelerators, will the tool automatically use this acceleration 
>> while working? Or it has to be explicitly specified somehow that it must be 
>> used? 
>> And if it attempts to use it, how do I check whether that attempt was 
>> successful?
>>
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