Lionsgate

• 2015 Lionsgate Blu-ray (but it's missing the extra scenes in the Ultimate Edition)

• 2017 StudioCanal 4K Blu-ray and subsequent 4K Blu-rays are notorius for being heavily denoised and smoothened. Alternatively, 35mm scans for the theatrical cut is also available.

• For the Ultimate Edition with the T-1000 searching John's room and the happy future ending, the 2009 Skynet Blu-ray, which is the older pre-2017 transfer, but has DNR.

• Original Kodak/ORC CDS mix:  Japan Pioneer DVD in DTS/ac3 5.1

• Original Dolby Stereo SR: USA Widescreen LaserDisc and others.

Differences of mixes on various releases: see thread and more info here.

2017 Blu-ray (which has the DNRed transfer), the 2009 Skynet Edition Blu-ray, and the 2000 Ultimate Edition DVD have exclusive extras. The 2003 Extreme Edition DVD has some exclusive easter eggs.

• The BBC 4K collection and Shout! Factory 4K collection all use the same source, and are all unfortunately using AI upscaling and DNR'ed They are worse than the blurays and the 2023 US Shout! Factory collections are even prone to disc-rot.

• 2009 Lionsgate US (also prone to disc-rot) or UK 2 Entertain OOP Blu-ray will be the way to go.

• The 4K collection's Blu-ray seems to be a reprint of previous releases.

Shout! Factory 4K

5.1 track for The Wrong Trousers is in its correct pitch both in music and voices https://forum.blu-ray.com/showpost.php?p=21535755&postcount=103

Unaltered track with the original music cues is on the LaserDisc.

• The BBC 4K collection and Shout! Factory 4K collection all use the same source, and are all unfortunately using AI upscaling and DNR'ed They are worse than the blurays and the 2023 US Shout! Factory collections are even prone to disc-rot.

• 2009 Lionsgate US (also prone to disc-rot) or UK 2 Entertain OOP Blu-ray will be the way to go.

• The 4K collection's Blu-ray seems to be a reprint of previous releases.

4Ks have low-pitched music and sound effects (and that includes Shaun's baas) correct-pitch voices: https://forum.blu-ray.com/showpost.php?p=21536116&postcount=109

• The BBC 4K collection and Shout! Factory 4K collection all use the same source, and are all unfortunately using AI upscaling and DNR'ed They are worse than the blurays and the 2023 US Shout! Factory collections are even prone to disc-rot.

• 2009 Lionsgate US (also prone to disc-rot) or UK 2 Entertain OOP Blu-ray will be the way to go.

• The 4K collection's Blu-ray seems to be a reprint of previous releases.

None of the 4K, nor any of the 2009 Blu-ray has the correct pitch see https://forum.blu-ray.com/showthread.php?t=364711&page=8

Lionsgate 4K Blu-ray is a disaster. The compression on the base layer is horrid, and the oversized 18 Mbps FEL barely helps.

Lionsgate 4K Blu-ray

Lionsgate 4K Blu-ray includes original matrixed Dolby Stereo mix, albeit lossy, and a 5.1 surround upmix. The stereo track on previous BD and DVD releases is also lossy and sounds about the same.

• The BBC 4K collection and Shout! Factory 4K collection all use the same source, and are all unfortunately using AI upscaling and DNR'ed They are worse than the blurays and the 2023 US Shout! Factory collections are even prone to disc-rot.

• 2009 Lionsgate US (also prone to disc-rot) or UK 2 Entertain OOP Blu-ray will be the way to go.

• The 4K collection's Blu-ray seems to be a reprint of previous releases.

4K discs

4K discs in the correct pitch https://forum.blu-ray.com/showthread.php?t=364711&page=8

Lionsgate 4K Blu-ray has excessive DNR, Japan Blu-ray maybe better?

Lionsgate 4K Blu-ray disappointing, with burned in English subs

Lionsgate 4K Blu-ray has terrible compression, but still beats out the old disc which was sourced from a mediocre old scan with edge enhancement, and which has compression issues of its own.

Original 5.1 mix: 1997 Pioneer LaserDisc or 1997 Live Entertainment NTSC DVD
Original matrixed Dolby Stereo mix: Lionsgate 4K Blu-ray

The film originally premiered with two mixes, a 5.1 for upgraded theaters, and a distinct matrixed Dolby Stereo mix for older venues. The original 5.1 mix can only be found on the earliest LD/DVD releases, as all later releases replace it with a mediocre 7.1 mix with reduced dynamic range.

The Atmos mix is based off of the previous 7.1 remix, but with futher alterations as per director's wishes. One scene intentionally drops out into silence, see this post for details.