Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-12-12 Thread South East
Further fuzzing has found more problems in ffmpeg code. I have opened two tickets: https://trac.ffmpeg.org/ticket/11344 https://trac.ffmpeg.org/ticket/11345 No problems have been found in my changes. Does this mean I have done sufficient testing to have my changes approved? I asked for guidance

Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-11-16 Thread South East
Fuzzing has discovered one crash bug so far. It's not related to my changes. The crash has some potential to be exploitable so I've emailed ffmpeg-secur...@ffmpeg.org. Email includes a sample and repro instructions. On Sat, 9 Nov 2024 at 01:08, South East <8billion.peo...@gmail.com> wrote: > >

Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-11-08 Thread South East
On Sat, 9 Nov 2024 at 00:37, Michael Niedermayer wrote: > > On Mon, Nov 04, 2024 at 06:14:07AM +, South East wrote: > > Hi all - what do I need to do to progress this? > > iam a bit overloaded with work ATM, but bayer or interlacing combined with > jpeg gives me memories of segfaults. So maybe

Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-11-08 Thread Michael Niedermayer
On Mon, Nov 04, 2024 at 06:14:07AM +, South East wrote: > Hi all - what do I need to do to progress this? > > I'm not sure, but it sounds like Tomas thought patch 1 might need > someone with experience with Bayer taking a look. iam a bit overloaded with work ATM, but bayer or interlacing comb

Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-11-03 Thread South East
Hi all - what do I need to do to progress this? I'm not sure, but it sounds like Tomas thought patch 1 might need someone with experience with Bayer taking a look. Thanks On Wed, 30 Oct 2024 at 04:27, South East <8billion.peo...@gmail.com> wrote: > > Thanks for taking a look! > > On Tue, 29 Oct

Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-10-29 Thread South East
Thanks for taking a look! On Tue, 29 Oct 2024 at 15:25, Tomas Härdin wrote: > > -#define MLV_CLASS_FLAG_DELTA 0x40 > > #define MLV_CLASS_FLAG_LZMA 0x80 > > +#define MLV_CLASS_FLAG_DELTA 0x40 > > +#define MLV_CLASS_FLAG_LJ92 0x20 > > This hunk could be simpler if you didn't move MLV_CLASS_FLAG_

Re: [FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-10-29 Thread Tomas Härdin
tor 2024-10-24 klockan 18:59 +0100 skrev South East: > ffmpeg has existing support for MLV raw video files; > libavformat/mlvdec.c. > Since this was added, MLV has been extended to support LJ92 > compressed > image data.  These patches build on lossless DNG support in 7.2-dev > to > enable handling

[FFmpeg-devel] Add support for LJ92 compressed MLV files, attempt 02

2024-10-24 Thread South East
ffmpeg has existing support for MLV raw video files; libavformat/mlvdec.c. Since this was added, MLV has been extended to support LJ92 compressed image data. These patches build on lossless DNG support in 7.2-dev to enable handling LJ92 MLV via existing libavcodec/mjpegdec.c code. Sample LJ92 MLV