32GB limit in MKVExtract & MKVCleaver?

[theirongiant]

Hello,

I am dealing with a very large MKV that contains Cineform HD (AVI) and WAV streams. (btw, Cineform HD is the *uncompressed* GoPro video codec.) I don't know why in God's name this file was put in an MKV container when an AVI would have sufficed. But alas, here I am.

MKVextract, MKVExtract2 GUI, and MKVCleaver always stop extracting the video file at 32GB. The target unpack volume is formatted NTFS so we're not running into file size limits. What could be going on here?

Edit: here is the log output from mkvextract:

C:\Program Files\MKVToolNix>mkvextract.exe tracks "f:\InsanelyLargeMovie.mkv" 0:"h:\output\movie.avi" 1:"h:\output\movie.wav"
Extracting track 0 with the CodecID 'V_MS/VFW/FOURCC' to the file 'h:\output\movie.avi'. Container format: AVI (Microsoft Audio/Video Interleaved)
Extracting track 1 with the CodecID 'A_PCM/INT/LIT' to the file 'h:\output\movie.wav'. Container format: WAV
Internal error in avilib - redefine NR_IXNN_CHUNKS
[avilib dump] cur_std_idx=32 NR_IXNN_CHUNKS=32POS=33218054252 towrite=3215048
Progress: 10%

[Hurda]

The limit is in the library avilib mkvextract is using to create AVI-files:
https://github.com/mbunkus/mkvtoolnix/blob/029a6bf943cc9e4262da80d0851fcca574fceb2e/li.../avilib.c#L318

[Marsia Mariner]

This is the answer that I've just received from the author of MKVtoolnix:

I've created builds where I've re-defined the maximum number of chunks to 1024. The resulting maximum AVI file size should be 1 TB. I haven't tested it, though, as I don't have files that big.

https://mkvtoolnix.download/windows/pre/

[poisondeathray]

ffmpeg has cineform decoding support now (slow compared to the official cineform decoder), but it can be used to re-wrap into AVI

[theirongiant]

Perfect, thank you so much for the replies!

This is the answer that I've just received from the author of MKVtoolnix:

I've created builds where I've re-defined the maximum number of chunks to 1024. The resulting maximum AVI file size should be 1 TB. I haven't tested it, though, as I don't have files that big.

https://mkvtoolnix.download/windows/pre/

I will download the latest build and try again.

Edit: this worked on the first try. Thanks again!