Compile frame-by-frame heatmaps and JOD's

[digitaltvguy]

• Frame-by-Frame is helpful for finding specific perceptual issues (and pairing with heatmap)
• Add frame-by-frame heatmaps that don't frame-blend (frame-blending makes it very hard to view heatmaps)

[mantiuk]

--heatmap=raw should give a heatmap without showing the context of the test frames.

Currently, there is no option to produce frame-by-frame JODs. This is something that we may add in the future, and I will leave this issue open.

--distogram is one way to analyze distortions frame-by-frame.

[digitaltvguy]

Thank you, If you can post my script as an option, I’m about to test a new version. It will build the frame-based analysis (you can set a window for temporal metrics). Also, it would help if ffmpeg installed into anaconda3 ends compiles with zimg so subsampling (upsampling from 4:2:0; filter=spline36) optimizations can be best possible. Best, Chris Seeger Director, Advanced Content Production Office of the CTO ***@***.*** ***@***.*** ***@***.*** From: Rafal Mantiuk ***@***.***> Date: Saturday, March 7, 2026 at 12:22 PM To: gfxdisp/ColorVideoVDP ***@***.***> Cc: Seeger, Chris (NBCUniversal) ***@***.***>, Author ***@***.***> Subject: [EXTERNAL] Re: [gfxdisp/ColorVideoVDP] Compile frame-by-frame heatmaps and JOD's (Issue #43) [https://avatars.githubusercontent.com/u/15435122?s=20&v=4]mantiuk left a comment (gfxdisp/ColorVideoVDP#43)<https://urldefense.com/v3/__https://github.com/gfxdisp/ColorVideoVDP/issues/43*issuecomment-4016969292__;Iw!!PIZeeW5wscynRQ!sDSuFLtvHZCpfobmLaoLeaWTWgv-5_UCH6l98kCbL4u5ujSQMEuRSCgF6z_yLYHvfC_WitX6HwSp3YnbEX83zQyN0w$>

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--heatmap=raw should give a heatmap without showing the context of the test frames. Currently, there is no option to produce frame-by-frame JODs. This is something that we may add in the future, and I will leave this issue open.

--distogram is one way to analyze distortions frame-by-frame. — Reply to this email directly, view it on GitHub<https://urldefense.com/v3/__https://github.com/gfxdisp/ColorVideoVDP/issues/43*issuecomment-4016969292__;Iw!!PIZeeW5wscynRQ!sDSuFLtvHZCpfobmLaoLeaWTWgv-5_UCH6l98kCbL4u5ujSQMEuRSCgF6z_yLYHvfC_WitX6HwSp3YnbEX83zQyN0w$>, or unsubscribe<https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/AANIO6F7XMCW5ASYH53SKST4PRLGHAVCNFSM6AAAAACWKC43YKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DAMJWHE3DSMRZGI__;!!PIZeeW5wscynRQ!sDSuFLtvHZCpfobmLaoLeaWTWgv-5_UCH6l98kCbL4u5ujSQMEuRSCgF6z_yLYHvfC_WitX6HwSp3YnbEX8TUKbB9Q$>. You are receiving this because you authored the thread.