[FFmpeg-devel] [PATCH 1/3] lavf/riffenc: Improve spec compliance

[Mats Peterson]

On 03/12/2016 02:20 PM, Mats Peterson wrote:
> On 03/12/2016 01:14 PM, Michael Niedermayer wrote:
>> On Sat, Mar 12, 2016 at 11:43:32AM +0100, Mats Peterson wrote:
>>>>>>> why do you think they are written by libavformat ?
>>>>>>>
>>>>>>> i see:
>>>>>>> "C:\PROGRAM FILES\ASUS\ASUS LIVE\ASUSLIVE.EXE -AVICAP32- ASUS Video
>>>>>>> Capture Driver, Version:  3.8.2.2"
>>>>>>>
>>>>>>> in asv2_320x240_3.avi
>>>>>>>
>>>>>>>
>>>
>>> Regarding asv1/asv2, they do use 48 in biSize, but since there is no
>>> official documentation for these codecs that explicitly mentions
>>> that biSize should be 48 (which breaks the specs), it's plain wrong
>>> to use anything else than 40.
>>
>> just because the creator of a format chooses to keep the specs
>> secret doesnt mean you can freely choose the formats of headers.
>>
>> What is correct for it is what the official software stores and it
>> stores 48 not 40, also 48 is the value i would have expected that they
>> would use.
>>
>>
>
> Well, then they're breaking the specs, just like HuffYUV.
>

They're breaking the AVI specs, that is.

Mats