I recorded Apollo 13 OTA last week from KGO the ABC affiliate here in the bay area. Looking at the recording it seems to be very low quality. So I surmise that I'm watching the SD feed.
I want to edit the .ch and .pid files so that it will play back the HD sub channel.
When I look at the transport stream with bbdmux it reports the following about the first minute:
F:\ emp\\bb>bbdmux j:\\hdtv\\apollo13\\apollo13.ts.0000
bbDMUX - version 1.9, by Brent Beyeler (email@example.com)
speed increases by, Apachez and Christian Vogelgsang
Scanning for PID's, press control-c to quit ...
File j:\\hdtv\\apollo13\\apollo13.ts.0000 is an MPEG-2 Transport Stream
Found PID 0x0021, Other Stream
Found PID 0x0011, Other Stream
Found PID 0x1FFF, Null Packet Stream
Found PID 0x0024, Other Stream
Found PID 0x0014, Other Stream
Found PID 0x0000, Program Association Table Stream
Found PID 0x0020, Other Stream
Found PID 0x0010, Other Stream
Found PID 0x1FFB, Other Stream
Found PID 0x1D03, Other Stream
Found PID 0x1D01, Other Stream
Found PID 0x1D02, Other Stream
Found PID 0x1E80, Other Stream
Found PID 0x1D00, Other Stream
MPEG Transport Packets = 766464
PID 0x0000, Program Association Table packets = 595, total bytes = 109480
PID 0x0010, Other packets = 594, total bytes = 109296
PID 0x0011, Video stream 0 packets = 497712, total bytes = 91494622
PID 0x0014, Private Stream 1 packets = 16718, total bytes = 2853152
PID 0x0020, Other packets = 594, total bytes = 109296
PID 0x0021, Video stream 0 packets = 176651, total bytes = 32467196
PID 0x0024, Private Stream 1 packets = 16718, total bytes = 2853258
PID 0x1D00, Other packets = 105, total bytes = 19320
PID 0x1D01, Other packets = 425, total bytes = 78200
PID 0x1D02, Other packets = 213, total bytes = 39192
PID 0x1D03, Other packets = 143, total bytes = 26312
PID 0x1E80, Other packets = 213, total bytes = 39192
PID 0x1FFB, Other packets = 953, total bytes = 175352
PID 0x1FFF, Null packets = 54830, total bytes = 10088720
My .ch file as recorded reads:
and my .pid file as recorded reads:
I noticed that 0017 = 0x0011 (decimal vs. hexadecimal)
and the 0020 = 0x0014 corresponding to a fairly large stream that would seem to be the audio.
So I tried modifying the.ch file to read:
(KGO comes in as channel 7, and I'm assuming the second number is the sub channel)
and I modified the .pid file to read
0033,0036 to correspond with the other two big streams that bbdmux reported.
Watching that, it seems a little higher quality but not being able to see them side by side, it's hard to tell if there's a difference.
Am I doing the correct thing? Am I missing anything?
Did anybody watch the HD feed and could tell me whether it was soft and noisy?
TitanTV and HDTVgalaxy disagreed on whether this was really in HD, so are there just two SD streams here?
PS I did try and search the forum for editing subchannel files but I couldn't find anything.