Compression Artifacts H.265/H.264

shmn

I've compressed hundreds of my discs using DVDFab H.265 (fast encoding 1 pass, .15 bits/pixel) and never had a problem until now. The disc is Bach's St Matthew's Passion. The disc is region 0, BD50. When I rip the disc to mkv (H.265 or H.264) with deinterlace on or off I get blocky compression artifacts around any motion no matter how slight the movement. It's very noticeable. I've attached a screenshot to show the blocking.

Any ideas on how to fix this?

signals

Wow, that looks awful. What are you using for playback? Never mind, I see it is VLC. Also, please attach the DVDFab internal log session from the conversion, instructions for this are linked in my sig, below. We are obtaining the disc for testing. Moving your thread to the correct forum (BD Ripper).

shmn

I've attached a log of compressing one chapter of the main movie from that disc. It shows the compression blocking in both VLC and Kodi. I also tried compressing using an older version of DVDFAB (version 9) and it came out with the same artifacts. Thanks for the assistance.

MrVideo

[QUOTE=shmn;197317]The disc is region 0, BD50.[/QUOTE]
A little off-topic, but in order that this doesn't get used by others, there is not such thing as region 0 (DVD or Blu-ray). It is either not region coded or region all (which is region ABC). With Blu-rays, region coding is optional. No studio, that I know if, actually codes region ABC. In that case, they just do not do region checking.

Technically, if a studio were to mistakenly check for region 0, it would not play anywhere. I'm not even sure it is possible to do that. :D

signals

shmn,
The disc has been ordered and should arrive in about a week. Nothing obvious in the log except that you also had AnyDVD running, which DVDFab shut down. This should happen automatically for either software now, but safer to exit the one you are not using.

@MrVideo
I have several euro-discs that are coded ABC on the box. Rare, but it happens.

shmn

[QUOTE=signals;197356]shmn,
The disc has been ordered and should arrive in about a week. Nothing obvious in the log except that you also had AnyDVD running, which DVDFab shut down. This should happen automatically for either software now, but safer to exit the one you are not using.
[/QUOTE]

Thank you.

shmn

[QUOTE=MrVideo;197353]A little off-topic, but in order that this doesn't get used by others, there is not such thing as region 0 (DVD or Blu-ray). It is either not region coded or region all (which is region ABC). With Blu-rays, region coding is optional. No studio, that I know if, actually codes region ABC. In that case, they just do not do region checking.

Technically, if a studio were to mistakenly check for region 0, it would not play anywhere. I'm not even sure it is possible to do that. :D[/QUOTE]

Region 0 is printed on the back of the case. See attachment.

Meesdem

SHMN Region 0

For commercial use. Travel by bus-train-airplane etc... all 0.

signals

shmn,
I have the disc now, please tell me a chapter that has sufficient motion to notice this effect.

shmn

[QUOTE=signals;197633]shmn,
I have the disc now, please tell me a chapter that has sufficient motion to notice this effect.[/QUOTE]

Well, there isn't much motion other than the conductor waving his hands and people playing orchestral instruments. The second chapter is what I took the screenshot from in my original post so that's probably a good place to start.

Thanks for tackling this problem.

Dora

Did you got blocky compression preview it？

shmn

[QUOTE=Dora;197715]Did you got blocky compression preview it？[/QUOTE]

Yes. See attachment.

Chameleon

Raise the Bitrate a bit.

shmn

Raise the Bitrate a bit.
Chameleon

Actually, a higher bitrate makes it worse. The screenshot from my original post was at 0.15 bits/pixel and this one was at 0.25 bits/pixel. The blocking artifacts increased in number and size at the higher bit rate. Plus, I've compressed hundreds of Blu-rays at my normal settings and this is the only disc that has this problem.

Well, I tried to upload a screenshot but there is a limit to 100KB. Really? Is this 1990? And no JPG? I took a small crop of a screenshot from VLC measuring 480x380 pixels which is pretty small and it's still 368KB. So a 100KB crop of a screenshot would be just about useless.

Chameleon

Actually, a higher bitrate makes it worse. The screenshot from my original post was at 0.15 bits/pixel and this one was at 0.25 bits/pixel. The blocking artifacts increased in number and size at the higher bit rate. Plus, I've compressed hundreds of Blu-rays at my normal settings and this is the only disc that has this problem.

Well, I tried to upload a screenshot but there is a limit to 100KB. Really? Is this 1990? And no JPG? I took a small crop of a screenshot from VLC measuring 480x380 pixels which is pretty small and it's still 368KB. So a 100KB crop of a screenshot would be just about useless.
shmn

If this is the only movie that this happens on it must have something to do with the pressing. ASs for no JPG, i feel your pain, but I bet it will be added soon as this is a new VB forum update.

shmn

shmn,
I have the disc now,
signals

Any progress or solution to this issue?

Dora

I have tried converting to mkv （H265 0.15 bit）with DVDFab 10048, but problem didn't reproduce.

signals

Hi shmn, I can't' reproduce exactly what you are seeing either. The tests I have made are not great, but the original disc does not look very good when played either. I think it may be way the television video was processed when the disc was made. Blocking like that around fast motion objects means that something in the chain (either encoding or playback) is not coping with the high peak bitrates or calculations it generates. Try a smaller screen size for the encoding like 1280x720 or smaller, your player will upscale it on-the-fly to 1920x1080 or whatever your screen requires.

shmn

Hi shmn, I can't' reproduce exactly what you are seeing either. The tests I have made are not great, but the original disc does not look very good when played either. I think it may be way the television video was processed when the disc was made. Blocking like that around fast motion objects means that something in the chain (either encoding or playback) is not coping with the high peak bitrates or calculations it generates. Try a smaller screen size for the encoding like 1280x720 or smaller, your player will upscale it on-the-fly to 1920x1080 or whatever your screen requires.
signals

Well, I tried it again with the latest version 10.0.4.9 and now the problem doesn't happen. That's very odd. I had tried ripping this disc a couple of years ago and had the problem but never did anything about it and then tried again recently with version 10.0.4.7 (I believe...two versions previous to 10.0.4.9) and with 9.3.2.1 and the problem occurred again no matter my compression settings which is when I posted the problem. Also tried different BR drives.

But I guess it doesn't matter now because whatever the problem was...it's now fixed. Thanks.

signals

Glad to hear that, I think Dora took it to the developers.