[mythtv-users] new PC build that's MythTV compatible

[Will Dormann]

On 12/1/20 6:45 AM, James Linder wrote:
> Owen thanks very much.
> These are two screen shots on a macbook retina display (2650x1650) ish
> They look similar on intel-1080 monitor. I'll examin a real TV now.
> They are ABC SD and HD. My critical look is at the text, but scene changes do not make much difference.
> http://tigger.ws/downloads/twoSD.png
> http://tigger.ws/downloads/twoHD.png


For an HD recording, the quality of the latter is quite poor.  My hunch 
is that it's 480p instead of HD (or whatever the p equivalent of the SD 
signal in your region is).

To eliminate some variables, try running "ffprobe" on some recordings. 
  For example, here are a couple from my system:

Input #0, mpegts, from '2511_20201201120000.ts':
   Duration: 01:00:30.42, start: 48950.153256, bitrate: 13824 kb/s
   Program 1
     Stream #0:0[0x641]: Video: mpeg2video (Main) ([2][0][0][0] / 
0x0002), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], Closed 
Captions, max. 79975 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0:1[0x642](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
5.1(side), fltp, 384 kb/s
     Stream #0:2[0x643](spa): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
stereo, fltp, 192 kb/s


Input #0, mpegts, from '2235_20201112050000.ts':
   Duration: 01:22:29.28, start: 46678.077111, bitrate: 3161 kb/s
   Program 1
     Stream #0:0[0xb0f]: Video: mpeg2video (Main) ([2][0][0][0] / 
0x0002), yuv420p(tv, smpte170m), 720x480 [SAR 8:9 DAR 4:3], Closed 
Captions, max. 7500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0:1[0xb10](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
5.1(side), fltp, 384 kb/s
     Stream #0:2[0xb11](spa): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
stereo, fltp, 96 kb/s
     Stream #0:3[0xb12]: Unknown: none ([134][0][0][0] / 0x0086)
Unsupported codec with id 0 for input stream 3



The first is HD, as indicated by the "1920x1080"
The second is considered SD, with a resolution of 720x480.


What is the resolution of the recording for what you used for the 
"twoHD.png" screenshot?


-WD