| Message ID | 20240803005601.44246-1-aimingoff@pc.nifty.jp |
|---|---|
| Headers | show |
| Series | lavfi/vf_gopromax_opencl: add GoPor Max 360 video filter | expand |
ping On 2024/08/03 9:56, TADANO Tokumei wrote: > This is updated patch of: > https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=3943 > I contacted to Ronan LE MEILLAT and agreed with him to submit new patch. > > Abstruct of GoPro Max .360 video file format is described in: > https://gopro.com/news/max-tech-specs-stitching-resolution > > The specification is little bit buggy. > The format is based on EAC (Equi-Angular Cubemap), and there are overlapped > pixels at boundaries of front and rear cams. > Probably, the desinger intended to add 2 x 32 (= total 64) ovelapped pixels. > But actual format has 2 x 64 pixels overlapped area. > Thus the width will be 2 x 32 pixels shorter than standard EAC format after > blending overlapped area. > > This filter blends overlapped area, stretches the width of the cube, > and combine two streams into single stream with standard format. > > v3: modifies `configure` file to add dependency on opencl. > v4: fix small difference from v360 filter in xyz_to_eac() The filter is not generic filter but for specific device. If there is no bad influence to other filters and/or codecs, please apply this patch. Sample .360 files of GoPro Max can be found at: https://bit.ly/x3vsmax https://drive.google.com/drive/folders/1h-ks7-jxV6uRE_pcrKMGsaIiPRjJ0eW Thanks, > TADANO Tokumei (1): > lavfi/vf_gopromax_opencl: add GoPro Max 360 video filter > > configure | 1 + > doc/filters.texi | 78 +++++++ > libavfilter/Makefile | 2 + > libavfilter/allfilters.c | 1 + > libavfilter/opencl/gopromax.cl | 282 +++++++++++++++++++++++++ > libavfilter/opencl_source.h | 1 + > libavfilter/vf_gopromax_opencl.c | 351 +++++++++++++++++++++++++++++++ > 7 files changed, 716 insertions(+) > create mode 100644 libavfilter/opencl/gopromax.cl > create mode 100644 libavfilter/vf_gopromax_opencl.c >
ping again On 2024/08/15 17:10, TADANO Tokumei wrote: > ping > > On 2024/08/03 9:56, TADANO Tokumei wrote: >> This is updated patch of: >> https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=3943 >> I contacted to Ronan LE MEILLAT and agreed with him to submit new patch. >> >> Abstruct of GoPro Max .360 video file format is described in: >> https://gopro.com/news/max-tech-specs-stitching-resolution >> >> The specification is little bit buggy. >> The format is based on EAC (Equi-Angular Cubemap), and there are overlapped >> pixels at boundaries of front and rear cams. >> Probably, the desinger intended to add 2 x 32 (= total 64) ovelapped pixels. >> But actual format has 2 x 64 pixels overlapped area. >> Thus the width will be 2 x 32 pixels shorter than standard EAC format after >> blending overlapped area. >> >> This filter blends overlapped area, stretches the width of the cube, >> and combine two streams into single stream with standard format. >> >> v3: modifies `configure` file to add dependency on opencl. >> v4: fix small difference from v360 filter in xyz_to_eac() > > The filter is not generic filter but for specific device. > If there is no bad influence to other filters and/or codecs, please apply this patch. > > Sample .360 files of GoPro Max can be found at: > https://bit.ly/x3vsmax > https://drive.google.com/drive/folders/1h-ks7-jxV6uRE_pcrKMGsaIiPRjJ0eW > > Thanks, > >> TADANO Tokumei (1): >> lavfi/vf_gopromax_opencl: add GoPro Max 360 video filter >> >> configure | 1 + >> doc/filters.texi | 78 +++++++ >> libavfilter/Makefile | 2 + >> libavfilter/allfilters.c | 1 + >> libavfilter/opencl/gopromax.cl | 282 +++++++++++++++++++++++++ >> libavfilter/opencl_source.h | 1 + >> libavfilter/vf_gopromax_opencl.c | 351 +++++++++++++++++++++++++++++++ >> 7 files changed, 716 insertions(+) >> create mode 100644 libavfilter/opencl/gopromax.cl >> create mode 100644 libavfilter/vf_gopromax_opencl.c >> > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".