Mats Peterson <matsp888-at-yahoo....@ffmpeg.org> skrev: (12 mars 2016 12:14:03 CET) >On 03/12/2016 12:08 PM, Mats Peterson wrote: >> On 03/12/2016 11:53 AM, Mats Peterson wrote: >>> On 03/12/2016 11:48 AM, Mats Peterson wrote: >>>> On 03/12/2016 11:43 AM, 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. >>>>> >>>> >>>> Furthermore, any "global headers" in *any* codec have nothing to do >with >>>> the BITMAPINFOHEADER. They aren't connected in any way. The size of >the >>>> BITMAPINFOHEADER is 40, so biSize should always be 40, since it >defines >>>> the size of the BITMAPINFOHEADER, not the size of the >BITMAPINFOHEADER + >>>> extra data. >>>> >>>> Mats >>>> >>> >>> If it wasn't for the braindead specification of HuffYUV with its own >>> BITMAPINFOHEADER variant, this would be a piece of cake. Always use >40 >>> in biSize. >>> >>> Mats >>> >>> _______________________________________________ >> >> I vote for using huffyuv and ffvhuff (since it's a variant of >huffyuv) >> as the only exceptions to using 40 bytes in biSize, regardless of any >> non-conformant existing or future stuff. >> > >If the authors of future specs should happen to think that biSize >should >be anything else than 40, we'd better tell them the facts. > >Mats > >_______________________________________________ >ffmpeg-devel mailing list >ffmpeg-devel@ffmpeg.org >http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
Perhaps you can use my latest 2-part patch set that includes asv1 and asv2 in the "exception list", but thaf's it. No more entries should ever need to be added to this list. Mats -- Mats Peterson http://matsp888.no-ip.org/~mats/ _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
