Why aren't BluRay ISOs supported?

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WhosAsking
Posts: 45
Joined: Fri Jul 03, 2009 1:40 pm

Why aren't BluRay ISOs supported?

Post by WhosAsking » Fri May 29, 2015 7:39 pm

Basically, what I wrote in the subject. DVD ISOs are supported but not BluRay ones, even though the guide recommends copying contents if possible to the hard drive before continuing (assuming you're not trying to copy a protected disc).

I wanted to learn more about this issue before making this a feature request.

I strongly suspect this is down to the code used to handle the ISOs is written, but I just want to know for sure if this is why BluRay ISOs are not supported yet.

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s55
HandBrake Team
Posts: 9522
Joined: Sun Dec 24, 2006 1:05 pm

Re: Why aren't BluRay ISOs supported?

Post by s55 » Fri May 29, 2015 8:05 pm

They are supported, but only in nightly builds. libbluray only recently got support for it.

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JohnAStebbins
HandBrake Team
Posts: 5441
Joined: Sat Feb 09, 2008 7:21 pm

Re: Why aren't BluRay ISOs supported?

Post by JohnAStebbins » Fri May 29, 2015 8:08 pm

Bluray ISOs are supported in the HandBrake nightly builds.

DVD ISO reading is built in to libdvdread. libbluray did not have a built-in ISO reader. But recently, a new stand-alone ISO reader has been developed (libudfread) by the folks supporting libbluray and this has been included in the HandBrake nightly builds. Eventually, this new library will also replace the ISO reading code in libdvdread.

WhosAsking
Posts: 45
Joined: Fri Jul 03, 2009 1:40 pm

Re: Why aren't BluRay ISOs supported?

Post by WhosAsking » Sat May 30, 2015 2:51 pm

Thanks for the update and details. It helps a lot to know just why something's the way it is, and I look forward to BluRay ISO support eventually reaching the mainstream release. In the meantime, I can get by with using Daemon Tools to mount the ISOs as a virtual drive.

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Rodeo
HandBrake Team
Posts: 12160
Joined: Tue Mar 03, 2009 8:55 pm

Re: Why aren't BluRay ISOs supported?

Post by Rodeo » Sat May 30, 2015 2:54 pm

For such simple things as mounting ISO images, there are freeware alternatives (e.g. Virtual CloneDrive).

WhosAsking
Posts: 45
Joined: Fri Jul 03, 2009 1:40 pm

Re: Why aren't BluRay ISOs supported?

Post by WhosAsking » Sun May 31, 2015 6:37 pm

Daemon Tools Lite IS freeware. And as long as you don't use their front end (use the shell extensions instead), you don't get nagged.

WhosAsking
Posts: 45
Joined: Fri Jul 03, 2009 1:40 pm

Re: Why aren't BluRay ISOs supported?

Post by WhosAsking » Wed Jun 03, 2015 10:23 am

I am trying svn7261 right now, but it won't read BluRay ISOs I have (they're made by DVDFab but Daemon Tools Lite can read them). It simply reports no titles found. Are there differing standards concerning them, and if so, which program(s) make ISOs compatible with the nightly? Or has the support been pulled for the time being?

I'm asking because I seem to be having issues causing my computer to seize during encoding, usually during the second pass (it's persisting at this time). I'm not making a specific request concerning this yet because I'm still trying to isolate the cause, and switching from the virtual drive to ISO might help to eliminate candidates. For now, I'll try with extracted contents, which this seems to support.

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Rodeo
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Posts: 12160
Joined: Tue Mar 03, 2009 8:55 pm

Re: Why aren't BluRay ISOs supported?

Post by Rodeo » Wed Jun 03, 2015 12:23 pm

Scan log please.

WhosAsking
Posts: 45
Joined: Fri Jul 03, 2009 1:40 pm

Re: Why aren't BluRay ISOs supported?

Post by WhosAsking » Wed Jun 03, 2015 1:57 pm

OK, I found it. Like I said, this ISO comes from DVDFab. The ISO by itself doesn't work, but when I mount the image (Daemon Tools Lite can read it) and copy the contents, that can be read.
---

Code: Select all

[09:49:46] hb_init: starting libhb thread
# Starting Scan ...
[09:49:47] CPU: Intel(R) Core(TM)2 Quad  CPU   Q9450  @ 2.66GHz
[09:49:47]  - logical processor count: 4
[09:49:47] OpenCL device #1: Advanced Micro Devices, Inc. Barts
[09:49:47]  - OpenCL version: 1.2 AMD-APP (1411.4)
[09:49:47]  - driver version: 1411.4 (VM)
[09:49:47]  - device type:    GPU
[09:49:47]  - supported:      YES
[09:49:47] Intel Quick Sync Video support: no
[09:49:47] hb_scan: path=M:\VOLUME_ID.iso, title_index=0
udfread ERROR: read metadata file 0: unexpected tag -1
udfread ERROR: read metadata file 1: unexpected tag -1
udfread ERROR: unknown partition 1
udfread ERROR: unhandled tag -1 in File Set Descriptor area
udfread ERROR: didn't find File Set Descriptor
src/libbluray/disc/disc.c:251: failed opening UDF image M:\VOLUME_ID.iso
src/libbluray/disc/disc.c:332: error opening file BDMV\index.bdmv
src/libbluray/disc/disc.c:332: error opening file BDMV\BACKUP\index.bdmv
[09:49:47] bd: not a bd - trying as a stream/file instead
libdvdnav: Using dvdnav version 5.0.1
libdvdread: Encrypted DVD support unavailable.
libdvdread:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdread:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[09:49:47] dvd: not a dvd - trying as a stream/file instead
[mp3 @ 00000000008c62c0] Header missing
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Input #0, mp3, from 'M:\VOLUME_ID.iso':
  Duration: 380:16:05.12, start: 0.000000, bitrate: 160 kb/s
    Stream #0.0: Audio: mp1, 44100 Hz, stereo, s16p, 160 kb/s
[09:49:48] hb_stream_open: open M:\VOLUME_ID.iso failed
[09:49:48] scan: unrecognized file type
[09:49:48] libhb: scan thread found 0 valid title(s)
# Scan Finished ...
As for my other issue (seizing up during encoding), using contents still caused a seize, I'm trying without GPU acceleration (DXVA/OpenCL) to see if it's the video card that's crashing (making it likely a local issue for me--poor thing's a bit old and has seized up before).

UPDATE: The seizing can be disregarded. It seems to have been a combination of an old video card and a bad extraction. I tried it again fresh using a directory extract rather than an ISO (without OpenCL the program simply hung in place, but I could still force it closed and retry), and it worked out. It may help to note that content extraction rather than ISO extraction is probably the better way to encode from a BluRay source.

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