MPEG-2 Blu-ray extras lose 16:9 aspect ratio after MakeMKV remux (DAR becomes 1:1)
Posted: Sat Feb 07, 2026 5:16 am
I am encountering a reproducible aspect-ratio issue with MPEG-2 Blu-ray content after remuxing with MakeMKV (tested with 1.18.1 and 1.18.3 on Windows x64).
Source (disc playback / elementary stream):
MPEG-2 Video, 1920×1080, 29.97i (Top Field First)
Display Aspect Ratio correctly signaled as 16:9
Plays correctly in MPC-HC directly from disc
After MakeMKV remux to MKV:
Video dimensions remain 1920×1080
MediaInfo reports:
Display aspect ratio: 1.000
Original display aspect ratio: 16:9
Some players render the video horizontally squeezed unless the container DAR is manually corrected
This affects short-form Blu-ray extras (e.g., “Production Notes” text-on-graphics), authored as interlaced MPEG-2. The video essence appears intact, but the 16:9 aspect signaling is not preserved at the container level.
This behavior persists across MakeMKV versions, suggesting a limitation or design choice rather than a regression.
Question:
Is this a known limitation of MPEG-2 → MKV remuxing in MakeMKV, where the MPEG-2 sequence header AR is not explicitly propagated to the MKV container? If so, is external DAR correction the intended workflow for MPEG-2 Blu-ray content?
Specific title export is The Abbott and Costello Collection- Disc Nine_t06.mkv
Source (disc playback / elementary stream):
MPEG-2 Video, 1920×1080, 29.97i (Top Field First)
Display Aspect Ratio correctly signaled as 16:9
Plays correctly in MPC-HC directly from disc
After MakeMKV remux to MKV:
Video dimensions remain 1920×1080
MediaInfo reports:
Display aspect ratio: 1.000
Original display aspect ratio: 16:9
Some players render the video horizontally squeezed unless the container DAR is manually corrected
This affects short-form Blu-ray extras (e.g., “Production Notes” text-on-graphics), authored as interlaced MPEG-2. The video essence appears intact, but the 16:9 aspect signaling is not preserved at the container level.
This behavior persists across MakeMKV versions, suggesting a limitation or design choice rather than a regression.
Question:
Is this a known limitation of MPEG-2 → MKV remuxing in MakeMKV, where the MPEG-2 sequence header AR is not explicitly propagated to the MKV container? If so, is external DAR correction the intended workflow for MPEG-2 Blu-ray content?
Specific title export is The Abbott and Costello Collection- Disc Nine_t06.mkv