[FFmpeg-devel] Vertical bands with RT21 (Intel Real Time Video 2.1) codec

[Mats Peterson]

On 12/18/2015 01:22 PM, Mats Peterson wrote:
> On 12/18/2015 05:32 AM, Mats Peterson wrote:
>> On 12/18/2015 05:12 AM, Mats Peterson wrote:
>>> On 12/18/2015 04:13 AM, Mats Peterson wrote:
>>>> Samples: https://drive.google.com/open?id=0B3_pEBoLs0faei1Sd1h6SG11QlE
>>>>
>>>> Mats
>>>>
>>>
>>> The clips are sample clips from Video for Windows, in case anyone
>>> wonders. I haven't created them myself.
>>>
>>> Mats
>>>
>>
>> The output is generally washed-out, as well, apart from the bands.
>>
>> Mats
>>
>
> I noticed this issue has been discussed as far back as in 2005 (see
> http://sourceforge.net/p/ffmpeg/bugs/310/), but using the slightly
> different terms "ghosting and shadow effects". In any case, it obviously
> still hasn't been fixed.
>
> Mats
>

Sorry, Paul, I accidentally removed your reply. Anyway, as an answer to 
your question regarding whether I know software that plays/decodes the 
videos correctly, yes, the IR21 codec in Windows 3.1. Support for RT21 
was unfortunately dropped in later versions of Windows, as far as I 
know. And thanks, Piotr Bandursky, for providing the raw output from 
ir21.dll. That's the way it should look.

Mats

-- 
Mats Peterson
http://matsp888.no-ip.org/~mats/