[linux-dvb] Re: Test: How view Italian stations?

[Gianluca <nomail@tiscalinet.it>]

On Tue, 18 Dec 2001 21:38:59 you wrote:

> Are those channels FTA or encrypted? 
They are all free to air.

> If they are FTA there may be some error in 
ts2ps.
> Did you try mplex to create a PS?
$ mplex -i TS_STREAM -o /tmp/1 RaiTre.ts
Reading from /home/gianluca/RaiTre.ts
Output File is: /tmp/1
Setting up for SVCD mux

Opening tmp_as.mp2 for audio demux
Opening tmp_vs.m2v for video demux
TS demux with apid: 0  vpid: 0
searching PIDS
video PID: 162 (0xa2)
audio PID: 88 (0x58)
Audiostream: Layer: 2  BRate: 192 kb/s  
Freq: 48.0 kHz
count: 2048
count: 2048
Videostream: ASPECT: 4:3  Size = 544x576  
FRate: 25 fps  BRate: 10.00 Mbit/s
count: 2048
...........
count: 2048

apts : 10134.131011s
vpts : 10134.650467s
VPTS - APTS = 519ms

  Scanning video stream for a sequence 
header and pulldown type ...
    no pulldown detected ...

  Scanning video stream for pictures ...
Scanning video stream: 0% - byte offset 12 
of 37348525.
............................................
.........
Scanning video stream: 99% - byte offset 
36975098 of 37348525. 
Found 1427 picture headers, stream bit 
offset 298571720.
  Video stream information
    Stream length : 37321465
    Total time (seconds) : 57
    Sequence start : 149
    Sequence end : 0
    No. Pictures : 1427
    No. Groups : 149
    No. I Frames : 149 avg. size 54715 
bytes
    No. P Frames : 603 avg. size 29913 
bytes
    No. B Frames : 675 avg. size 16494 
bytes
    No. D Frames : 0 avg. size 0 bytes
    Horizontal size : 544

    Vertical size : 576
    Aspect ratio : 0.6735
    Picture rate : 25.000 frames/sec
    Bit rate : 1250000 bytes/sec (10000000 
bits/sec)
    Computed avg rate : 655000 bytes/sec 
(5240000 bits/sec)
    Computed max rate : 993100 bytes/sec 
(7944800 bits/sec)
    Vbv buffer size : 145408 bytes
    CSPF : 0
 ^M
  Scanning audio stream for access units 
information
Scanning audio stream: 0% - byte offset 4 
of 1716608.
............................................
........
Scanning audio stream: 99% - byte offset 
1699780 of 1716608.
Found 2981 audio
frame headers, stream bit offset 13732864.
  MPEG audio stream information
    Stream length : 1716608
    Syncwords : 2981
    Frames : 2981 size 576 bytes
    Frames : 0 size 577 bytes
    Layer : 2
    CRC checksums : no
    Bit rate : 24000 bytes/sec (192 
kbit/sec)
    Frequency : 48.0 kHz
    Mode : 0 stereo
    Mode extension : 0
    Copyright bit : 0 no copyright
    Original/Copy : 0 copy
    Emphasis : 0 none
 ^M    NOTE: Mux rate may be too low for 
data rate, watch for PTS/DTS underflows.

  Multiplexing information
    Video stream data rate : 993100 
bytes/sec (7944800 bits/sec)
    Audio stream 1 data rate : 24000 
bytes/sec (192000 bits/sec)
    Total data rate : 348600 bytes/sec 
(2788800 bits/sec)

  Multiplexing file /tmp/1 
Multiplexing: 0% - 2 of 4408  A/V units. 
^MMultiplexing: 1% - 46 of 4408  A/V units. 
^M    video PTS (1179.00ms) underflow at 
pack 155 by 27.67ms
    video DTS (1219.00ms) underflow at pack 
161 by 27.67ms
    video PTS (1259.00ms) underflow at pack 
173 by 67.67ms
    ........................................
.............
    video DTS (1459.00ms) underflow at pack 
209 by 107.67ms
    video PTS (1499.00ms) underflow at pack 
221 by 147.67ms
Multiplexing: 2% - 89 of 4408  A/V units. 
^M    video DTS (1539.00ms) underflow
at pack 228 by 154.33ms
    video PTS (1579.00ms) underflow at pack 
241 by 201.00ms
    video DTS (1619.00ms) underflow at pack 
247 by 201.00ms
    ........................................
..............
    video PTS (55939.00ms) underflow at 
pack 16721 by 55707.67ms
    video DTS (55979.00ms) underflow at 
pack 16725 by 55694.33ms
Multiplexing: 99% - 4364 of 4408  A/V 
units. ^M    video PTS (56019.00ms) 
underflow at pack 16732 by 55701.00ms
    video DTS (56059.00ms) underflow at 
pack 16737 by 55694.33ms
    video PTS (56099.00ms) underflow at 
pack 16755 by 55774.33ms
    ........................................
...................
    1414 video underflows (SCR >= PTS or 
DTS)

    NOTE: The resulting file may not play 
back correctly.
    Try reducing the video bitrate or 
increasing the video and
    audio startup delays.
 ^M  Finished multiplexing /tmp/1
  Calculating 149 SVCD user data scan 
offsets for file /tmp/1
SVCD Scan Offsets: 0% - 0 of 149  I-Frames.
...........................................
SVCD Scan Offsets: 100% - 149 of 149  
I-Frames.
Finished calculating SVCD scan offsets for 
file /tmp/1
Multiplexing: 100% - 4408 of 4408  A/V 
units.

> If that works, you may be able to find the 
error in ts2ps.
> 
> I will take a look at it when my vacation is 
over.

thank you very much, I`d like know if 
problem is only on my PC or not!


Gianluca


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