[FFmpeg-devel] [PATCH] avcodec/dpx: Support for RGB 12-bit packed decoding

[Kieran O Leary]

Actually, here's another test that might be a bit more meaningful.
This is using graphicksmagic and the identify/signature command in
order to generate sha256 hashes for the image data only.

It is producing identical hashes for:
1. The original 12-bit DPX from Da Vinci Resolve (not packed to 16-bit)
2. The graphicsmagick 12-bit DPX to 12-bit DPX (padded to 16-bit DPX) file
3. The ffmpeg convert 12-bit DPX to 12-bit DPX (padded to 16-bit DPX)
which uses the ffmpeg decoder with Jerome's patch.

$ gm identify -verbose
6e0edc3b-7d89-4710-8b9a-66c8c990f9dc_1_00094787.dpx  |grep -i
signature

  Signature: 3fb67059dca860c483b1deac912973b76d48fa9f0114d63e8116cff69d55bb4c

$ gm identify -verbose gm_dpx_to_dpx.dpx  |grep -i signature

  Signature: 3fb67059dca860c483b1deac912973b76d48fa9f0114d63e8116cff69d55bb4c


$ gm identify -verbose ffmpeg_dpx_to_dpx.dpx  |grep -i signature

  Signature: 3fb67059dca860c483b1deac912973b76d48fa9f0114d63e8116cff69d55bb4c

Hopefully this is a bit better than just using ffmpeg?

Best,

Kieran.