W dniu 2017-09-06 o 09:27, Mateusz pisze:
> W dniu 2017-09-06 o 02:07, Michael Niedermayer pisze:
>> On Wed, Sep 06, 2017 at 01:25:45AM +0200, Mateusz wrote:
>>> W dniu 2017-09-05 o 23:37, Michael Niedermayer pisze:
On Tue, Sep 05, 2017 at 04:42:06PM +0200, Mateusz wrote:
> W dniu 2017-09-
W dniu 2017-09-06 o 02:07, Michael Niedermayer pisze:
> On Wed, Sep 06, 2017 at 01:25:45AM +0200, Mateusz wrote:
>> W dniu 2017-09-05 o 23:37, Michael Niedermayer pisze:
>>> On Tue, Sep 05, 2017 at 04:42:06PM +0200, Mateusz wrote:
W dniu 2017-09-05 o 15:40, Michael Niedermayer pisze:
> On
On Wed, Sep 06, 2017 at 01:25:45AM +0200, Mateusz wrote:
> W dniu 2017-09-05 o 23:37, Michael Niedermayer pisze:
> > On Tue, Sep 05, 2017 at 04:42:06PM +0200, Mateusz wrote:
> >> W dniu 2017-09-05 o 15:40, Michael Niedermayer pisze:
> >>> On Mon, Sep 04, 2017 at 09:33:34AM +0200, Mateusz wrote:
> >
W dniu 2017-09-05 o 23:37, Michael Niedermayer pisze:
> On Tue, Sep 05, 2017 at 04:42:06PM +0200, Mateusz wrote:
>> W dniu 2017-09-05 o 15:40, Michael Niedermayer pisze:
>>> On Mon, Sep 04, 2017 at 09:33:34AM +0200, Mateusz wrote:
If ffmpeg reduces bit-depth to 8-bit or more, it uses DITHER_CO
On Tue, Sep 05, 2017 at 04:42:06PM +0200, Mateusz wrote:
> W dniu 2017-09-05 o 15:40, Michael Niedermayer pisze:
> > On Mon, Sep 04, 2017 at 09:33:34AM +0200, Mateusz wrote:
> >> If ffmpeg reduces bit-depth to 8-bit or more, it uses DITHER_COPY macro.
> >> The problem is DITHER_COPY macro make imag
W dniu 2017-09-05 o 15:40, Michael Niedermayer pisze:
> On Mon, Sep 04, 2017 at 09:33:34AM +0200, Mateusz wrote:
>> If ffmpeg reduces bit-depth to 8-bit or more, it uses DITHER_COPY macro.
>> The problem is DITHER_COPY macro make images darker (on all planes).
>>
>> In x265 project there is issue #
On Mon, Sep 04, 2017 at 09:33:34AM +0200, Mateusz wrote:
> If ffmpeg reduces bit-depth to 8-bit or more, it uses DITHER_COPY macro.
> The problem is DITHER_COPY macro make images darker (on all planes).
>
> In x265 project there is issue #365 which is caused by this DITHER_COPY bug.
> I think it i
If ffmpeg reduces bit-depth to 8-bit or more, it uses DITHER_COPY macro.
The problem is DITHER_COPY macro make images darker (on all planes).
In x265 project there is issue #365 which is caused by this DITHER_COPY bug.
I think it is time to fix -- there are more and more high bit-depth sources.
P
W dniu 2017-03-20 o 10:00, Carl Eugen Hoyos pisze:
> 2017-03-15 22:52 GMT+01:00 Mateusz Brzostek :
>> Hello!
>>
>> There are 3 problems with DITHER_COPY macro in libswscale/swscale_unscaled.c:
>> 1) there is overflow in dithering from 12-bit to 10-bit (output value >
>> 1023);
>> 2) for limit rang
2017-03-15 22:52 GMT+01:00 Mateusz Brzostek :
> Hello!
>
> There are 3 problems with DITHER_COPY macro in libswscale/swscale_unscaled.c:
> 1) there is overflow in dithering from 12-bit to 10-bit (output value > 1023);
> 2) for limit range the lower limit is not respected, for example from 10-bit
>
In previous patch there was missing braces {} in for (; j < length; j++) loop.
Please ignore that patch.
New patch with braces and without FFMIN macro.
Mateusz
W dniu 2017-03-18 o 21:28, Mateusz Brzostek pisze:
> W dniu 2017-03-16 o 19:17, Michael Niedermayer pisze:
>> On Wed, Mar 15, 2017 at
W dniu 2017-03-16 o 19:17, Michael Niedermayer pisze:
> On Wed, Mar 15, 2017 at 10:52:29PM +0100, Mateusz Brzostek wrote:
>> Hello!
>>
>> There are 3 problems with DITHER_COPY macro in libswscale/swscale_unscaled.c:
>> 1) there is overflow in dithering from 12-bit to 10-bit (output value >
>> 1023
W dniu 2017-03-16 o 19:17, Michael Niedermayer pisze:
> On Wed, Mar 15, 2017 at 10:52:29PM +0100, Mateusz Brzostek wrote:
>> Hello!
>>
>> There are 3 problems with DITHER_COPY macro in libswscale/swscale_unscaled.c:
>> 1) there is overflow in dithering from 12-bit to 10-bit (output value >
>> 1023
On Wed, Mar 15, 2017 at 10:52:29PM +0100, Mateusz Brzostek wrote:
> Hello!
>
> There are 3 problems with DITHER_COPY macro in libswscale/swscale_unscaled.c:
> 1) there is overflow in dithering from 12-bit to 10-bit (output value > 1023);
> 2) for limit range the lower limit is not respected, for e
Hello!
There are 3 problems with DITHER_COPY macro in libswscale/swscale_unscaled.c:
1) there is overflow in dithering from 12-bit to 10-bit (output value > 1023);
2) for limit range the lower limit is not respected, for example from 10-bit to
8-bit value 64 is converted to 15;
3) for many iterat
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