wolfgangw/digital_cinema_tools

cinemaslides: SoX memory leak? (How to efficiently do channel mapping?)

XanderLo opened this issue · 2 comments

XanderLo commented

Hello,

First of all, many thanks for the free DCP creation solution that supports 96kHz audio and encryption/KDM!
I have a specific need where I need to have audio on channel 13 of the DCP. I read all the documentation I could find on the digital_cinema_tools and digital_cinema_tools_distribution repos and I figured (please correct me if I'm wrong) that the mapping is done via the provided wave file channel configuration: i.e. a 16-channel wave would map to a 16-channel DCP.

Moreover, by looking at the cinemaslides script, I'd need to change the SMPTE_AUDIO_LABEL assignation to "16" instead of the limited choices of either 2.0, 5.1 or 7.2.

For now, the problem I'm having seems to be with the memory-intensive operation sox_conform. Even with 4GB of RAM, the 16-channel 1.8GB wave file cannot get processed and cinemaslides fails with the following error:

dbox@ubuntu:~/Documents/TestDCP$ cinemaslides -t dcp -o TEST_DCP3 -x cut,788 dbox2k.tiff CombinedAudioWave.wav

  • cinemaslides v0.2012.07.05
  • Creating 2D 2K DCP (flat 1998x1080 @ 24.0 fps). Encoder: openjpeg
  • Number of images: 1
  • Transition specs: cut,788
  • Black intermediate: None
  • Projected length: 18912 frames, 13 minutes 8.0 seconds (788.0 seconds)
  • Title: Cinemaslides test
  • Annotation: cinemaslides 2012-08-02T10:17:04-07:00
  • Issuer: dbox@ubuntu
  • Kind: test
  • Conform audio ...
  • Conform audio: /home/dbox/Documents/TestDCP/CombinedAudioWave.wav
    /home/dbox/.digital_cinema_tools/.bin/cinemaslides:2735:in read': failed to allocate memory (NoMemoryError) from /home/dbox/.digital_cinema_tools/.bin/cinemaslides:2735:incheck_for_audio_asset'
    from /home/dbox/.digital_cinema_tools/.bin/cinemaslides:2726:in conform_audio' from /home/dbox/.digital_cinema_tools/.bin/cinemaslides:2815:inblock in '
    from /home/dbox/.digital_cinema_tools/.bin/cinemaslides:2814:in each' from /home/dbox/.digital_cinema_tools/.bin/cinemaslides:2814:in'

Do you know of a more efficient way to do the audio channel mapping? Some other DCP creation solutions require mono waves and they are assigned to specific channels. I think that would be ideal.

Below is the output of digital-cinema-tools-setup and my Ruby version is 1.9.3-p194.
Thanks in advance for your help!

digital-cinema-tools-setup v1.2012.06.17
OS: ubuntu
build-essential: OK
curl: OK
libxslt1-dev: OK
libxml2-dev: OK
libexpat1-dev: OK
xmlsec1: OK
libreadline-dev: OK
zlib1g: OK
zlib1g-dev: OK
libssl-dev: OK
imagemagick: OK
mplayer: OK
sox: OK
git-core: OK
libtiff4-dev: OK
libpng12-dev: OK
source $HOME/.bash_profile
bashrc: OK
PATH: /home/dbox/.digital_cinema_tools/.bin available in PATH
rbenv: OK
gem: --no-ri --no-rdoc
gemrc: OK
remote: Counting objects: 32, done.
remote: Compressing objects: 100% (13/13), done.
remote: Total 23 (delta 12), reused 17 (delta 6)
Unpacking objects: 100% (23/23), done.
From git://github.com/sstephenson/ruby-build
6e491b8..16c894f master -> origin/master
Updating 6e491b8..16c894f
Fast-forward
README.md | 2 +-
share/ruby-build/jruby-1.7.0-preview1 | 2 +-
share/ruby-build/rbx-2.0.0-dev | 1 -
3 files changed, 2 insertions(+), 3 deletions(-)
ruby-build: OK
Ruby: OK
Nokogiri: OK
true
true
Nokogiri: OK
openjpeg: OK
asdcplib: OK
Digital cinema tools distribution: Pulling updates ...
Already up-to-date.
Digital cinema tools distribution: cinemaslides OK
Digital cinema tools distribution: dc_crypto_context.rb OK
Digital cinema tools distribution: dcp_inspect OK
Digital cinema tools distribution: kdm-decrypt.rb OK
Digital cinema tools distribution: make-dc-certificate-chain.rb OK
Digital cinema tools distribution: public_key_thumbprint.rb OK
Digital cinema tools distribution: signature_check.rb OK
Digital cinema tools distribution: x509_extract.rb OK
Digital cinema tools distribution: x509_inspect.rb OK
Digital cinema tools distribution: xsd-check.rb OK
Digital cinema tools distribution: digital-cinema-tools-setup OK
cinemaslides: Required gem highline OK
cinemaslides: CINEMASLIDESDIR is set. OK
cinemaslides: CINEMACERTSTORE is set. OK
Local certificate store: Required certificates found
Local certificate store: OK
set show-all-if-ambiguous on
Tab completion: Fastpath set to on. Leaving untouched. OK
digital-cinema-tools-setup: OK

digital-cinema-tools-setup: Done

wolfgangw commented

Hi, out of town for the remainder of this month. I'll look at this as soon as I'm free. Thanks for the feedback so far.

wolfgangw commented

Note to self: See http://dcinemaforum.com/forum/index.php?topic=169.msg1613#msg1613 for the related topic on dcinemaforum