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