What DB Rebuilder settings for fixed crf?

[ilancas]

I want to back up my Bluray disks for display on my Media Player (Popcorn Hour A210). I want to always use Single Pass CRF=18 without regard to the resulting file size.

I've spotted the "FIXED_CRF=" hidden option, but am unsure what other mode/settings I need to use so that Rebuilder does not have to worry about achieving a specific output file size.

Many thanks in advance.

[jdobbs]

From a search for "FIXED_CRF":

http://forum.doom9.org/showthread.php?p=1371459#post1371459

[ilancas]

Thank you for replying. I had done a seach prior to posting which gave me the clue to use the required setting, but when I tried it out I was unclear whether it was working the way I wanted because I was puzzled by the last line displayed in the second to last entry in the log below "Performing CRF Prediction... - Analyzing 24.21 17.10 23.97 [23.87]". I guessed this to mean that Rebuilder was still attempting to work out the necessary CRF to reach a particular file size. Presumably, I'm wrong about that?


-----------------------
[13:24:14] BD Rebuilder v0.37.03 (beta)
- Source: USUAL_SUSPECTS_F1
- Input BD size: 17.70 GB
- Approximate total content: [01:46:04.066]
- Target BD size: 22.95 GB
- Windows Version: 6.1 [7600]
- MOVIE-ONLY mode enabled
- Quality: High Quality (Default), CRF
- Audio Settings: AC3=0 DTS=0 HD=0 Kbs=640
[13:24:16] PHASE ONE, Encoding
- [13:24:16] Extracting A/V streams [VID_00002]
- [13:27:45] Reencoding: VID_00002 (1 of 1)
- [13:27:45] Collecting video information
- [13:27:45] Keeping original video (no reencode)
- [13:27:45] Reencoding audio tracks (if req'd)
- [13:27:45] Multiplexing M2TS
[13:27:54]PHASE ONE aborted by user request
-----------------------
[13:28:14] BD Rebuilder v0.37.03 (beta)
- Source: USUAL_SUSPECTS_F1
- Input BD size: 17.70 GB
- Approximate total content: [01:46:04.066]
- Target BD size: 4.36 GB
- Windows Version: 6.1 [7600]
- MOVIE-ONLY mode enabled
- Quality: High Quality (Default), CRF
- Audio Settings: AC3=0 DTS=0 HD=0 Kbs=640
[13:28:15] PHASE ONE, Encoding
- [13:28:15] Extracting A/V streams [VID_00002]
- [13:31:27] Reencoding: VID_00002 (1 of 1)
- [13:31:27] Collecting video information
- Source Video: MPEG-2, 1920x1080
- Rate/Length: 23.976fps, 152,585 frames
- [13:31:27] Performing CRF Prediction...
- Analyzing 24.21 17.10 23.97 [23.87]
- [13:40:16] Encoding using constant rate factor.

[jdobbs]

Hmmm... I guess I should disable that routine when a fixed crf is used... thanks for reminding me.