Add import of .mogg files

An Audio/MIDI multi-track sequencer

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#154 Add import of .mogg files

Milestone: git_head

Status: open

Owner: nobody

Labels: feature (8)

Updated: 2015-04-06

Created: 2015-04-03

Creator: Collette

Private: No

Add the possibility to import .mogg files.
mogg files are multitracks off file. Audacity is able to import / export these files.

Discussion

Rui Nuno Capela - 2015-04-03

where can one find the mogg file format spec?

i know ogg is the container spec, and vorbis might be the encondig of each so called track, any example file i/o sample source code will be welcome.

is it at all supported by xiph.org's libvorbisfile ?

byee

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Collette - 2015-04-04

I uploaded an example file on my website (65 Mo):
http://ycollette.free.fr/Divers/mogg_example.mogg

I found some informations here: https://moggfiles.wordpress.com/about/
but no specifications.
I will dig into audacity files to see if I can find something.

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Collette - 2015-04-04

Found some things in audacity/src/import/ImportOgg.cpp

Ogg seems to be a container format which can have several Ogg files inside. The ImportOgg.cpp file can handle the loading of these several files into audacity.

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Rui Nuno Capela - 2015-04-05

hey. your example file (mogg_example.mogg) presents ifself as a regular ogg vorbis encoded file with one single stream but with 10 channels--it can pretty much get loaded on qtractor as long you rename its extension/suffix to .ogg instead of that thing .mogg :)

> ogginfo -v mogg_example.mogg Processing file "mogg_example.mogg"... New logical stream (#1, serial: 7d5885e1): type vorbis Vorbis headers parsed for stream 1, information follows... Version: 0 Vendor: Xiph.Org libVorbis I 20090709 Channels: 10 Rate: 44100 Nominal bitrate: 2399.209000 kb/s Upper bitrate not set Lower bitrate not set User comments section follows... ENCODER=REAPER Vorbis stream 1: Total data length: 65462759 bytes Playback length: 4m:19.841s Average bitrate: 2015.468656 kb/s Logical stream 1 ended

i was thinking about mogg multi-track as being a file with more than one stream.

perhaps what you're asking is about splitting a each channel into a mono audio track when importing an audio file, any file format not just ogg or mogg.

cheers
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Collette - 2015-04-06

Yes, if it's just that.
This file should be splitted into several tracks into qtractor.

Best regards,

YC

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