On Sat, 13 Feb 2016 13:09:48 +0100 Mats Peterson <matsp888-at-yahoo....@ffmpeg.org> wrote:
> On 02/13/2016 01:03 PM, Mats Peterson wrote: > > On 02/13/2016 01:00 PM, Mats Peterson wrote: > >> On 02/13/2016 12:58 PM, Mats Peterson wrote: > >>> On 02/13/2016 12:57 PM, Mats Peterson wrote: > >>>> On 02/13/2016 12:54 PM, Mats Peterson wrote: > >>>>> On 02/13/2016 12:52 PM, Mats Peterson wrote: > >>>>>>>> just double checked, this is not the case in written pal8 nut files > >>>>>>>> nor does the nut spec say anything about that. > >>>>>>>> > >>>>>>> > >>>>>>> Then check an odd-width nut file like the one below. And FFmpeg > >>>>>>> doesn't > >>>>>>> care about specs when using "-vcodec copy". The stride will be the > >>>>>>> one > >>>>>>> of the original data, whether it's 2, 4 or some other amount of > >>>>>>> bytes. > >>>>>>> > >>>>> > >>>>> The stride will be *aligned* to 2, 4 or some other amount of bytes. > >>>>> > >>>>> Mats > >>>>> > >>>> > >>>> Try "ffmpeg -i 8bpp_129.avi -vcodec rawvideo 8bpp_129.nut" with the > >>>> file > >>>> below. It will have a stride aligned to 4 bytes like the original AVI > >>>> file, and per the Microsoft specification, since it doesn't "-vcodec > >>>> copy" won't touch the video data. > >>>> > >>>> https://drive.google.com/open?id=0B3_pEBoLs0faekxWUTdkVGNTTlk > >>>> _______________________________________________ > >>> > >>> I mean "ffmpeg -i 8bpp_129.avi -vcodec copy 8bpp_129.nut" of course. > >>> > >>> Mats > >>> > >> > >> The stride will be 132 bytes, divisible by 4, rather than 129 bytes. > >> > >> Mats > >> > > > > Now the problem is that it won't show any video, since the incorrect > > codec tag RGB[15] will be written to the nut file, and it's not possible > > to use "-vtag" to set tha PAL[8] codec tag, but if you use "-v debug" > > you will see that the stride is 132 bytes. > > > > Mats > > > > _______________________________________________ > > What's more, no palette will be included in the frames, since "-vcodec > copy" once again doesn't touch the original AVI data. So it's pretty > useless to use "-vcodec copy" for pal8. Why are you talking with yourself on the ML? Nobody is going to read everything you post. You just replied to yourself 7 times! If you want input from others, you need to properly communicate your issues. This includes: - thinking before posting - summarizing the issues in a CONCISE and short way - not confusing yourself and others with hundreds of follow-ups _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel