Automatic quality setting

[MILLZY]

@jdobbs could you please explain how the automatic quality setting actually works against large files and smaller files. I have tried 2 rips, large and small and the both give me the quality setting as good with 1 pass abr. how does it choose this setting? I would just like a better description how it works please:thanks:

[colinhunt]

Seconded. I was about to inquire about this as well.

[jdobbs]

Seconded. I was about to inquire about this as well. It looks at the compression ratio required and the target size. I'm still playing with it, but right now it will pretty much always use that setting for BD-25. It's a work in progress.

[thegame]

Thanks I was curious about this to.

[hardkid]

Is it (automatic) the best mode for rebuilding BD's? I tried manual mode (automatic quiality settings OFF, Highest quality (Very Slow) On (to ensure I have the Highest quality and 2 passes). The original BD was 26Gb in size, so there was not much to worsen :-) The process took about 12 hours (the video was VC-1), but I'm totally unsatisfied with the result - there are VISIBLE degradations of video. Is it me so unlucky or the settings issue or this is a VC-1 recode problem?

[jdobbs]

I'd suggest you go back and look at the original -- my guess is that X264 was simply encoding what it saw... I have never seen a disc (and I've done hundreds) that there was any detectable difference when outputting to BD-25. What output size have you selected? Are you doing a movie-only or full backup?

[datman]

Most of my backup have been to BD5 and I have always used the slowest setting and encodes can take anywhere from 5-12 hours I don’t know if everybody has that much difference but I’m ok with it.

Jdobbs if I understood you right for now automatic is mostly for bd25 backups. For those I have been very happy with 1 pass abr @ highest.

My 1st backup with 33.02 I set to ultra high for a BD9 backup. Man it took 15 hours. My question where and when is this setting appropriate? I am anal about my backups. If there is a time or place that that setting would make an improvement I’m ok with 15 hour backups. Like on a disc that 2.5 hours long and you want to put it on a BD5 would the final picture be near perfect.

On my display a 55” HPTV @1080i I’m probably setting everything to way overkill. Someday I will get a new set and I want to make sure I’m as happy then as I am now.

[jdobbs]

Most of my backup have been to BD5 and I have always used the slowest setting and encodes can take anywhere from 5-12 hours I don’t know if everybody has that much difference but I’m ok with it.

Jdobbs if I understood you right for now automatic is mostly for bd25 backups. For those I have been very happy with 1 pass abr @ highest.

My 1st backup with 33.02 I set to ultra high for a BD9 backup. Man it took 15 hours. My question where and when is this setting appropriate? I am anal about my backups. If there is a time or place that that setting would make an improvement I’m ok with 15 hour backups. Like on a disc that 2.5 hours long and you want to put it on a BD5 would the final picture be near perfect.

On my display a 55” HPTV @1080i I’m probably setting everything to way overkill. Someday I will get a new set and I want to make sure I’m as happy then as I am now. My personal opinion is that Ultrahigh is never a good choice because it is massive overkill. It has always been there but was hidden and was meant only to be activiated via hidden setting (QUALITY=6). I mistakenly made it show with the addition of "Automatic". It won't even be on the menu with the next release. It may be useful, I guess, if you're trying to fit a lot on a BD-5.

[hardkid]

@jdobbs
The target size is BD25, Full Disk. I rechecked the resulting video, it looks bad if I play it in MPC+ffdshow, If I use MPC+CoreAVC - it's ok.

However, now I have another problem (with the same BD I previously succeeded with):


[10:50:38] PHASE ONE, Encoding
- [10:50:38] Extracting A/V streams [VID_00000]
- [10:59:40] Reencoding: VID_00000 (1 of 1)
- [10:59:40] Collecting video information
- Source Video: VC-1, 1920x1080
- Rate/Length: 23,976fps, 138*014 frames
- Bitrate: 29*456 Kbs
- [10:59:40] Reencoding: VID_00000, Pass 1 of 1
- Encode failed. Retrying.
- Encode failed. Retrying.
- Reached retry limit. Aborting.
- FFDSHOW Revision: (3326)
[10:59:44] - Failed video encode, aborted

[jdobbs]

@jdobbs
The target size is BD25, Full Disk. I rechecked the resulting video, it looks bad if I play it in MPC+ffdshow, If I use MPC+CoreAVC - it's ok.

However, now I have another problem (with the same BD I previously succeeded with):


[10:50:38] PHASE ONE, Encoding
- [10:50:38] Extracting A/V streams [VID_00000]
- [10:59:40] Reencoding: VID_00000 (1 of 1)
- [10:59:40] Collecting video information
- Source Video: VC-1, 1920x1080
- Rate/Length: 23,976fps, 138*014 frames
- Bitrate: 29*456 Kbs
- [10:59:40] Reencoding: VID_00000, Pass 1 of 1
- Encode failed. Retrying.
- Encode failed. Retrying.
- Reached retry limit. Aborting.
- FFDSHOW Revision: (3326)
[10:59:44] - Failed video encode, aborted Run INSPECT.EXE and see what setting is wrong.

[equity space]

Cool, was looking an answer to this.

[hardkid]

I have never seen a disc (and I've done hundreds) that there was any detectable difference when outputting to BD-25.

The resulting video quality has no detectable differences even if I setup the audio options as follows: Do not convert DTS to AC3, Do Not Reencode AC3, Keep HD Audio for BD25 Encoding? I can see what the result is on my 42" plasma, but I don't know about what happens on bigger screens if I keep the audio untouched (thus the video getting more compressed).

[jdobbs]

The resulting video quality has no detectable differences even if I setup the audio options as follows: Do not convert DTS to AC3, Do Not Reencode AC3, Keep HD Audio for BD25 Encoding? I can see what the result is on my 42" plasma, but I don't know about what happens on bigger screens if I keep the audio untouched (thus the video getting more compressed). There is always exceptions, I would suppose. If you keep several HD audio streams it may degrade it. But one or two wouldn't. If you have doubts, lots of spare time, and are losing sleep thinking about it -- just choose "High Quality. But I personally just leave it at "Automatic".