[FFmpeg-devel] [PATCH 2/3] Add section describing the filtergraph.

[Mike Scheutzow]

Stefano Sabatini wrote:
> On date Friday 2010-11-12 15:14:15 -0500, Mike Scheutzow encoded:
>   
>> Michael Niedermayer wrote:
>>     
>>> On Fri, Nov 12, 2010 at 01:32:55AM +0100, Stefano Sabatini wrote:
>>>       
>>>> ---
>>>> doc/filters.texi |   86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>>> 1 files changed, 86 insertions(+), 0 deletions(-)
>>>>         
> [...]
>   
>> Stefano:
>>
>> Why do you want to have two such similar concepts: a FILTERCHAIN and
>> a FILTERGRAPH? Having both adds complexity and will increase user
>> confusion. I don't understand the benefit this gives us.
>>     
> [...] 
> It's not something which I did invented myself, I just took the
> implemented syntax and described it. Also what do you want to remove?
>
> A graph is not a list, so for describing it you need to specify each
> connected sequence (aka filterchain), the current syntax seems quite
> convenient to me, the alternative would be to label every link in each
> filternode.
>   

If this is meant to answer my first question, I didn't understand your 
response.

Let me try a more concrete question:

Example 1. -vf "hflip, vflip"

Example 2. -vf "hflip; vflip"

Is there a functional difference between example 1 and example 2?

 From reading your filter description, I believe the output of both 
examples
is exactly the same.

Mike Scheutzow