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

[XanderLo]

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]

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]

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