[FFmpeg-devel] [PATCH] overlay filter

[Baptiste Coudurier]

On 11/18/2010 04:42 PM, Stefano Sabatini wrote:
> On date Thursday 2010-11-18 16:19:45 -0800, Baptiste Coudurier encoded:
>> Hi Stefano,
>>
>> On 11/15/2010 04:08 AM, Stefano Sabatini wrote:
>>> On date Friday 2010-11-12 15:12:06 +0100, Stefano Sabatini encoded:
>>>> On date Friday 2010-11-12 13:36:46 +0100, Stefano Sabatini encoded:
>>>>> On date Friday 2010-07-16 13:29:42 -0700, Baptiste Coudurier encoded:
>>>>>> On 07/16/2010 10:02 AM, Stefano Sabatini wrote:
>>>>>>> Hi all,
>>>>>>> this is a work in progress based on Bobby and Baptiste work.
>>>>>>>
>>>>>>> It's not yet ready for review, I'm sending it here in case someone
>>>>>>> wants to have a look at it and/or commenting it.
>>>>>>>
>>>>>>
>>>>>> This filter is _highly_ inefficient in this form. Copying the source
>>>>>> is useless and can be avoided. Furthermore the timestamps handling
>>>>>> is wrong.
>>>>>>
>>>>>> What you have to do is to handle timestamps correctly in my version.
>>>>>
>>>>> Done, also this version works with movie-in-movie (but supporting loop
>>>>> in movie seems a simple and useful feature anyway).
>>>>>
>>>>> There is still a bug related to direct rendering (and so only visible
>>>>> with ffplay), looking into that
>>>> [...]
>>>>
>>>> Fixed by adding AV_PERM_PRESERVE flag in the rej_perms.
>>>
>>> Updated with some docs fixes.
>>
>> Thanks for the work.
>>
>> Does the filter works to overlay a single picture logo in this form ?
>> I believe that's a needed feature and I'll work on this.
>
> Of course it is supported:
> "movie=0:png:ffmpeg.png, scale=80:-1 [over]; [in][over] overlay [out]"
>
> that's for showing a nice overlayed logo for the next FFmpeg show at
> linuxtag/whatever ;-)
>
> Note that I'm testing against the movie source I posted here, AFAIK
> timestamp handling in the soc repo movie source is broken.

Great, and how does it handle movie in movie with the overlayed movie being
shorter than the main movie ?

-- 
Baptiste COUDURIER
Key fingerprint                 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA
FFmpeg maintainer                                  http://www.ffmpeg.org