pt import failure

[Xansta]

Hi,

I am running Ardour 6.8.0 under Lubuntu 18.04 and when I try to import the attached protools file, Ardour crashes. The protools file was created with ProTools version 2021.12. I asked the Ardour folks about it and they directed me here stating that they use your software for ptx import.

Suggestions?

session26Mar2022.zip

[zamaudio]

ProTools 12 Session: Samplerate = 44100Hz
Target samplerate = 48000

24 wavs, 34 regions, 17 active regions

Audio file (WAV#) @ offset, length:
`Drums_01.wav` w(0) @ 0, 1022628
`Guitar 1_01.wav` w(1) @ 0, 1022628
`Bass Guitar_01.wav` w(2) @ 0, 1022628
`Guitar 2_01.wav` w(3) @ 0, 1022628
`aux Guitar2_01.wav` w(4) @ 0, 1022628
`Acoustic_01.wav` w(5) @ 0, 1022628
`Keyboard 1_01.wav` w(6) @ 0, 1022628
`Keyboard 2_01.wav` w(7) @ 0, 1022628
`Keyboard 3_01.wav` w(8) @ 0, 1022628
`Vocal 1_01.wav` w(9) @ 0, 1022628
`Vocal 2_01.wav` w(10) @ 0, 1022628
`Vocal 3_01.wav` w(11) @ 0, 1022628
`Drums_02.wav` w(12) @ 0, 514089180
`Guitar 1_02.wav` w(13) @ 0, 514089180
`Bass Guitar_02.wav` w(14) @ 0, 514089180
`Guitar 2_02.wav` w(15) @ 0, 514089180
`aux Guitar2_02.wav` w(16) @ 0, 514089180
`Acoustic_02.wav` w(17) @ 0, 514089180
`Keyboard 1_02.wav` w(18) @ 0, 514089180
`Keyboard 2_02.wav` w(19) @ 0, 514089180
`Keyboard 3_02.wav` w(20) @ 0, 514089180
`Vocal 1_02.wav` w(21) @ 0, 514089180
`Vocal 2_02.wav` w(22) @ 0, 514089180
`Vocal 3_02.wav` w(23) @ 0, 514089180

Region (Region#) (WAV#) @ into-sample, length:
`Acoustic_01` r(0) w(5) @ 0, 1113064
`Acoustic_02` r(1) w(17) @ 0, 559552896
`Bass Guitar_01` r(2) w(2) @ 0, 1113064
`Bass Guitar_02` r(3) w(14) @ 0, 559552896
`Drums_01.L` r(4) w(0) @ 0, 1113064
`Drums_01.R` r(5) w(0) @ 0, 1113064
`Drums_02.L` r(6) w(12) @ 0, 559552896
`Drums_02.R` r(7) w(12) @ 0, 559552896
`Guitar 1_01.L` r(8) w(1) @ 0, 1113064
`Guitar 1_01.R` r(9) w(1) @ 0, 1113064
`Guitar 1_02.L` r(10) w(13) @ 0, 559552896
`Guitar 1_02.R` r(11) w(13) @ 0, 559552896
`Guitar 2_01` r(12) w(3) @ 0, 1113064
`Guitar 2_02` r(13) w(15) @ 0, 559552896
`Keyboard 1_01` r(14) w(6) @ 0, 1113064
`Keyboard 1_02` r(15) w(18) @ 0, 559552896
`Keyboard 2_01.L` r(16) w(7) @ 0, 1113064
`Keyboard 2_01.R` r(17) w(7) @ 0, 1113064
`Keyboard 2_02.L` r(18) w(19) @ 0, 559552896
`Keyboard 2_02.R` r(19) w(19) @ 0, 559552896
`Keyboard 3_01.L` r(20) w(8) @ 0, 1113064
`Keyboard 3_01.R` r(21) w(8) @ 0, 1113064
`Keyboard 3_02.L` r(22) w(20) @ 0, 559552896
`Keyboard 3_02.R` r(23) w(20) @ 0, 559552896
`Vocal 1_01` r(24) w(9) @ 0, 1113064
`Vocal 1_02` r(25) w(21) @ 0, 559552896
`Vocal 2_01` r(26) w(10) @ 0, 1113064
`Vocal 2_02` r(27) w(22) @ 0, 559552896
`Vocal 3_01` r(28) w(11) @ 0, 1113064
`Vocal 3_02` r(29) w(23) @ 0, 559552896
`aux Guitar2_01.L` r(30) w(4) @ 0, 1113064
`aux Guitar2_01.R` r(31) w(4) @ 0, 1113064
`aux Guitar2_02.L` r(32) w(16) @ 0, 559552896
`aux Guitar2_02.R` r(33) w(16) @ 0, 559552896

MIDI Region (Region#) @ into-sample, length:

Track name (Track#) (Region#) @ Absolute:
`Drums` t(0) r(6) @ 0
`Drums` t(1) r(7) @ 0
`Guitar 1` t(4) r(10) @ 0
`Guitar 1` t(5) r(11) @ 0
`Bass Guitar` t(8) r(3) @ 0
`Guitar 2` t(9) r(13) @ 0
`aux Guitar2` t(10) r(32) @ 0
`aux Guitar2` t(11) r(33) @ 0
`Acoustic` t(12) r(1) @ 0
`Keyboard 1` t(15) r(15) @ 0
`Keyboard 2` t(16) r(18) @ 0
`Keyboard 2` t(17) r(19) @ 0
`Keyboard 3` t(18) r(22) @ 0
`Keyboard 3` t(19) r(23) @ 0
`Vocal 1` t(22) r(25) @ 0
`Vocal 2` t(23) r(27) @ 0
`Vocal 3` t(24) r(29) @ 0

MIDI Track name (MIDITrack#) (MIDIRegion#) @ Absolute:

Track name (Track#) (WAV filename) @ Absolute + Into-sample, Length:
`Drums` t(0) (Drums_02.wav) @ 0 + 0, 559552896
`Drums` t(1) (Drums_02.wav) @ 0 + 0, 559552896
`Guitar 1` t(4) (Guitar 1_02.wav) @ 0 + 0, 559552896
`Guitar 1` t(5) (Guitar 1_02.wav) @ 0 + 0, 559552896
`Bass Guitar` t(8) (Bass Guitar_02.wav) @ 0 + 0, 559552896
`Guitar 2` t(9) (Guitar 2_02.wav) @ 0 + 0, 559552896
`aux Guitar2` t(10) (aux Guitar2_02.wav) @ 0 + 0, 559552896
`aux Guitar2` t(11) (aux Guitar2_02.wav) @ 0 + 0, 559552896
`Acoustic` t(12) (Acoustic_02.wav) @ 0 + 0, 559552896
`Keyboard 1` t(15) (Keyboard 1_02.wav) @ 0 + 0, 559552896
`Keyboard 2` t(16) (Keyboard 2_02.wav) @ 0 + 0, 559552896
`Keyboard 2` t(17) (Keyboard 2_02.wav) @ 0 + 0, 559552896
`Keyboard 3` t(18) (Keyboard 3_02.wav) @ 0 + 0, 559552896
`Keyboard 3` t(19) (Keyboard 3_02.wav) @ 0 + 0, 559552896
`Vocal 1` t(22) (Vocal 1_02.wav) @ 0 + 0, 559552896
`Vocal 2` t(23) (Vocal 2_02.wav) @ 0 + 0, 559552896
`Vocal 3` t(24) (Vocal 3_02.wav) @ 0 + 0, 559552896

Your session seems to be fine according to ptftool. Is it really containing 3 hour clips by the way?

[zamaudio]

Does Ardour really crash, or does the progress bar on the resampling just seem to stop moving? I have a feeling it is still working but taking a very long time to resample your 11GB of audio. Can you confirm?

[x42]

Looks like the track indices are not consecutive. 0,1,4,5,... 24 for only 17 tracks The Ardour import code expects them to be consecutive

libs/ardour/import_pt.cc:356: void ARDOUR::Session::import_pt_rest(PTFFormat&): Assertion `ntr == nth + 1' fail

So this is an Ardour bug after all.

[zamaudio]

Thanks x42! I haven't finished importing the test session yet, it's still resampling. I would have reached a similar conclusion eventually.

[zamaudio]

As the region to track numbering in ptformat is arbitrary, it makes more sense to change ptformat to number the tracks consecutively. This is now fixed in c1c6475 and pushing a fix to ardour as well to simplify the region to track mappings to not require a lookup table but just use the index.

[zamaudio]

Fixed in Ardour/Ardour@6bbe684304

[zamaudio]

Thank you @Xansta for your bug report!

[Xansta]

I tried several times. Sometimes it was a direct crash, other times, I would wait for a while (several minutes) and finally give up. Yes, the session is three hours long. You're welcome for the bug report. I'm happy to contribute to better software