Record A Transport Stream File - Promax TG-140 Manual De Instrucciones

Grabador/reproductor de transport stream
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USER'S MANUAL. TG-140
Burst Mode can be Yes or No and applies only to the ASI output. In Burst Mode
the Transport Stream file is streamed out in a packetized way where a packet is the
same size as a Transport Stream file: that is 188 bytes. In this mode there is no stuffing
between bytes of a packet. Stuffing is only present between packets. When Burst Mode
is No the file is sent byte after byte and stuffing is inserted between bytes. This mode is
named ASI Spread Mode in literature. The stuffing I mention here exists only at physical
level and it is never present at application level. Note that this stuffing has nothing to do
with null packets in a Transport Stream file.
When Loop File is Yes the file is played forever or until the users stops it. When
the Player reaches the end of the file it starts reading it from the beginning again and so
on. The TG-140 has Loop File setting to Yes by default. When Loop file is Yes you
might want to perform some corrections to the Transport Stream File so that that are
less discontinuities between the end and the beginning of the file. This is desirable
when you want a smooth playback on some decoders. You can correct Decoding and
Presentation Time Stamps by enabling the setting Correct PTS/DTS. You can correct
Continuity Counters by enabling the setting Correct CC. You can correct Program Clock
Reference Stamps by setting Correct PCR.
Notice that it might be useless to perform any correction on a recorded Transport
Stream File. This is because the file, most likely, does not end at the boundaries of the
Transport Stream internal structures and so these structures are incomplete or broken
by the end of the file. To picture it imagine a Transport Stream file as a broken sentence
and then concatenate it. The full sentence could be "My tailor is rich. " but suppose the
recorded file contains "My tailor is ric". Looping, concatenating, the right sentence
results on a sequence or right sentences but looping the broken sentence results on
"My tailor is ricMy tailor is ric" where we have the word "ricMy" which means nothing
and is an error in the "Transport Stream".
When you are playing a file you can continue to move around the Menus of the
TG-140 to change configuration parameters or to start a recording. To recall the state of
the Player you can go to:

4.2 Record a Transport Stream File

To play a Transport Stream File follow this sequence of menus:
If there is no input signal or there is no space in the disk you will see an error
message on the LCD screen.
Hopefully everything will be ok and you will see the name of the file just being
recorded. Turning the Knob you can see some more information about the recording.
Bitrate is the input bitrate. Size is the size of the file in bytes, it will grow as the time
passes by. Time is the elapsed time since the recording was started.
02/2013
Local Control/Player/State
Local Control/Recorder/Record
Page 11

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