libheif

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Currently, the quality factor is specific to each codec (even each encoder). Investigate whether it is possible to find a comparable quality scale over all codecs. #1136

farindk

Image grids at the codec level

4

Some codecs support images composed of tiles at the codec level (ISO 23001-17, h.265). Is there any use-case to support this for writing and fast access or would it be...

farindk

heic image decode color incorrect

11

Hi, I use heif_convert command(from libheif example) to convert below heif image to jpg/png. The output image color incorrect which seems too green [1040g008313u8g0qp1m4g5nkalku094d2qla98k0 2.heic.zip](https://github.com/user-attachments/files/15837489/1040g008313u8g0qp1m4g5nkalku094d2qla98k0.2.heic.zip)

lam2003

Canon HIF (10 bit) Conversion to JPG : Tone Mapping & EXIF

11

Hello all, I tried the [demo ](https://strukturag.github.io/libheif/) (version 1.16.2) to convert a [HIF file (10 bit) ](https://we.tl/t-sgYLO9lAY7) to JPG. The conversion went smoothly, however, I noticed two things : 1)...

paswai

https://github.com/strukturag/libheif/blob/master/libheif/heif_context.cc#L912-L916 has code that looks like this: ``` if (refs.size() != 1) { return Error(heif_error_Invalid_input, heif_suberror_Unspecified, "Metadata not correctly assigned to image"); } ``` That seems inconsistent with ISO/IEC 14496-12:2022...

bradh

oss-fuzz reports "graphicsmagick:coder_HEIF_fuzzer: Abrt in std::terminate" in GraphicsMagick oss-fuzz testing

21

oss-fuzz issue [42535687](https://issues.oss-fuzz.com/issues/42535687) has been open since May 20th. Although it only occurs while using libheif, I was not aware that it was due to a libheif implementation feature. There...

bobfriesenhahn

ppa builds for Ubuntu noble 24.04

4

I noticed that ppa builds are missing for Ubuntu 24.04. Any chance they can be added? 24.04 is a LTS release.

ttk

nvidia hardware decoder support

14

bradh

Use hevc_cuvid instead of software decoding if available

12

Feature request to use hardware decoding if available for hevc formats. Please apprise if it already possible. I already have a ffmpeg dist with nvidia hevc decoder. Although that works...

Neoclassic

oss-fuzz reports stack overflow in libheif

12

As part of GraphicsMagick oss-fuzz fuzz testing, oss-fuzz has detected an unusual stack overflow in latest libheif code. The issue will eventually be visible to all at [graphicsmagick:coder_AVIF_fuzzer: Stack-overflow in...

bobfriesenhahn