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Progressive Rendering: generate video preview #60980

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opened 2019-01-29 15:16:49 +01:00 by Sybren A. Stüvel · 4 comments
Sybren A. Stüvel commented 2019-01-29 15:16:49 +01:00
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Having a video preview (at least of the first sample chunk) would improve usability of the progressive rendering, as only a list of linear EXR files isn't all that useful.

This would require correct conversion from the linear EXR files to the desired output colour space. Options to investigate are:

  • Use OpenColorIO's ocioconvert tool to convert the files, then feed to FFmpeg.
  • Use the Blender sequence editor to output PNG files in the correct colour space to feed to FFmpeg.
    • Open the job's blend file, duplicate the scene with 'copy settings only', fill the VSE with the EXR sequence, then render to PNG.
    • Create a new blend file, copy certain colour/OCIO-related settings (using BAT maybe?) from the original blend file, then fill the VSE with the EXR sequence and render to PNG.
  • Bake a LUT file from Blender's colour settings, and give that to FFmpeg to let it do the colour conversion.
Having a video preview (at least of the first sample chunk) would improve usability of the progressive rendering, as only a list of linear EXR files isn't all that useful. This would require correct conversion from the linear EXR files to the desired output colour space. Options to investigate are: - Use OpenColorIO's [`ocioconvert` tool](http://opencolorio.org/userguide/tool_overview.html#ocioconvert) to convert the files, then feed to FFmpeg. - Use the Blender sequence editor to output PNG files in the correct colour space to feed to FFmpeg. * Open the job's blend file, duplicate the scene with 'copy settings only', fill the VSE with the EXR sequence, then render to PNG. * Create a new blend file, copy certain colour/OCIO-related settings (using `BAT` maybe?) from the original blend file, then fill the VSE with the EXR sequence and render to PNG. - Bake a LUT file from Blender's colour settings, and give that to FFmpeg to let it do the colour conversion.
Sybren A. Stüvel self-assigned this 2019-01-29 15:16:49 +01:00
Sybren A. Stüvel commented 2019-01-29 15:16:50 +01:00
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Added subscriber: @dr.sybren

Added subscriber: @dr.sybren
Sybren A. Stüvel commented 2019-01-29 16:03:01 +01:00
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Output to JPEG would also be good enough (w.r.t. PNG).

Output to JPEG would also be good enough (w.r.t. PNG).
Sybren A. Stüvel commented 2019-02-01 11:28:35 +01:00
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Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
Sybren A. Stüvel commented 2019-02-01 11:28:35 +01:00
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Implemented as the 2nd option (open blend file, create scene, fill VSE, render) in 3371e5d, b3c620b, and a bunch of commits on the Worker

Implemented as the 2nd option (open blend file, create scene, fill VSE, render) in 3371e5d, b3c620b, and a bunch of commits on the Worker
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