Which alternative produces a better picture quality?
Posted: Fri Jun 15, 2018 8:35 am
I've tried 2 approaches in getting mkv file from a single source: A bdmv file sent to me of an old Japanese movie.
MakeMkv: I got a 26 gb mkv file, 1920x1080, with very high specs (media info).
DvdFab: I got a much smaller mkv file, 15 gb, 1920x820 with much lower specs.
The DvdFab produced the movie ONLY without the black horizontal frames which appear when I play it on a large 65" OLED screen.
I fully understand that the screen shows these 2 black frames because of the different ratio. (1:2.32 vs 1:1.78)
Assuming that I don't care about those black lines, I'd like to know whether there is REALLY a difference in picture quality or the mediainfo specs just reflect the difference in ratio?
Following are the mediainfo specs:
_____________________________
Video
ID : 1
ID in the original source medium : 4113 (0x1011)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 35 min
Bit rate mode : Variable
Bit rate : 35.0 Mb/s
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.703
Stream size : 23.4 GiB (96%)
Language : English
Default : No
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Original source medium : Blu-ray
______________________________________
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 35 min
Nominal bit rate : 18.9 Mb/s
Width : 1 920 pixels
Height : 820 pixels
Display aspect ratio : 2.35:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.500
Writing library : x264 core 142
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Original source medium : Blu-ray
MakeMkv: I got a 26 gb mkv file, 1920x1080, with very high specs (media info).
DvdFab: I got a much smaller mkv file, 15 gb, 1920x820 with much lower specs.
The DvdFab produced the movie ONLY without the black horizontal frames which appear when I play it on a large 65" OLED screen.
I fully understand that the screen shows these 2 black frames because of the different ratio. (1:2.32 vs 1:1.78)
Assuming that I don't care about those black lines, I'd like to know whether there is REALLY a difference in picture quality or the mediainfo specs just reflect the difference in ratio?
Following are the mediainfo specs:
_____________________________
Video
ID : 1
ID in the original source medium : 4113 (0x1011)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 35 min
Bit rate mode : Variable
Bit rate : 35.0 Mb/s
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.703
Stream size : 23.4 GiB (96%)
Language : English
Default : No
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Original source medium : Blu-ray
______________________________________
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 35 min
Nominal bit rate : 18.9 Mb/s
Width : 1 920 pixels
Height : 820 pixels
Display aspect ratio : 2.35:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.500
Writing library : x264 core 142
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Original source medium : Blu-ray