Sto analizzando i flussi audio/video dei vari canali. Ho diviso i canali in due gruppi. Prima quelli che apparentemente non hanno problemi, e poi quelli che hanno problemi su alcuni dispositivi:
Telecity:
Video
ID : 1370 (0x55A)
Menu ID : 1008 (0x3F0)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Codec ID : 27
Duration : 45 s 880 ms
Bit rate : 2 044 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Videogruppo:
Video
ID : 1310 (0x51E)
Menu ID : 1002 (0x3EA)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 3 frames
Format settings, GOP : M=3, N=33
Codec ID : 27
Duration : 22 s 720 ms
Bit rate mode : Constant
Bit rate : 1 939 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
VCO Azzurra TV:
Video
ID : 1410 (0x582)
Menu ID : 1012 (0x3F4)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Codec ID : 27
Duration : 19 s 240 ms
Bit rate : 1 289 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Canale Italia Piemonte:
Video
ID : 1350 (0x546)
Menu ID : 1006 (0x3EE)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Format settings, GOP : M=4, N=24
Codec ID : 27
Duration : 28 s 200 ms
Bit rate : 997 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Videonovara:
Video
ID : 1420 (0x58C)
Menu ID : 1013 (0x3F5)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Codec ID : 27
Duration : 30 s 760 ms
Bit rate : 1 764 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
TopCalcio24:
Video
ID : 1300 (0x514)
Menu ID : 1001 (0x3E9)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 3 frames
Format settings, GOP : M=3, N=33
Codec ID : 27
Duration : 30 s 380 ms
Bit rate mode : Constant
Bit rate : 966 kb/s
Nominal bit rate : 899 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
7+ Channel:
Video
ID : 1380 (0x564)
Menu ID : 1009 (0x3F1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3
Format settings : 3 Ref Frames
Format settings, CABAC : No
Format settings, Reference fra : 3 frames
Format settings, GOP : M=3, N=30
Codec ID : 27
Duration : 31 s 0 ms
Bit rate : 882 kb/s
Maximum bit rate : 2 044 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Canale Italia:
Video
ID : 1360 (0x550)
Menu ID : 1007 (0x3EF)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Format settings, GOP : M=4, N=24
Codec ID : 27
Duration : 35 s 80 ms
Bit rate : 997 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Onda Novara TV:
Video
ID : 1430 (0x596)
Menu ID : 1014 (0x3F6)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3
Format settings : CABAC / 1 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 1 frame
Format settings, GOP : M=1, N=60
Codec ID : 27
Duration : 35 s 60 ms
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
_____________________________________________
Telecupole:
Video
ID : 1330 (0x532)
Menu ID : 1004 (0x3EC)
Format : AVC
Format/Info : Advanced Video Codec
Format version : Version 2
Format profile : High@L3
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 3 frames
Codec ID : 27
Duration : 27 s 280 ms
Bit rate : 2 025 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Rete7:
Video
ID : 1390 (0x56E)
Menu ID : 1010 (0x3F2)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Codec ID : 27
Duration : 26 s 200 ms
Bit rate : 1 934 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Primantenna:
Video
ID : 300 (0x12C)
Menu ID : 1005 (0x3ED)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Codec ID : 27
Duration : 23 s 240 ms
Bit rate : 2 036 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Grp:
Video
ID : 1400 (0x578)
Menu ID : 1011 (0x3F3)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Codec ID : 27
Duration : 21 s 800 ms
Bit rate : 1 208 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Sestarete:
Video
ID : 1320 (0x528)
Menu ID : 1003 (0x3EB)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 2 frames
Format settings, GOP : M=3, N=24
Codec ID : 27
Duration : 20 s 200 ms
Bit rate : 1 268 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Quartatrete Blu:
Video
ID : 1440 (0x5A0)
Menu ID : 1015 (0x3F7)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Format settings, GOP : M=4, N=24
Codec ID : 27
Duration : 23 s 560 ms
Bit rate : 951 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Come si può notare dalle parti in grassetto, i canali che non hanno problemi hanno queste caratteristiche:
Format/Info : Advanced Video Codec
Format profile : Main@L3
Format settings : CABAC / 4 Ref Frames
Chi ha problemi invece usa questo:
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 4 Ref Frames
Telecupole apparentemente non ha cose strane se non:
Format version : Version 2
che altri canali non hanno.
Non so se possa dipendere solo da questo o da altro. Comunque il profilo fa sicuramente la differenza. Da qui i problemi.
C'è anche questo parametro che potrebbe causare qualche problema. Chissà...
MBAFF