#1 Java NullPointerException

[Steven van de Beek]

Hi,

I just downloaded your program and I have a problem.
The only program I don't have in the Requirements tab
is 'midentify'. I did NOT tick the 'Mark if you have
already converted film appropriately (MPEG for DVD)'
tickbox in the Paths... tab.

As soon as I try to add an MPG file to the Paths... tab
there's a popup that says "Please wait... getting file
info" and almost straight away I get the following error:
java.lang.NullPointerException
at java.lang.Runtime.exec(Runtime.java:583)
at java.lang.Runtime.exec(Runtime.java:523)
at java.lang.Runtime.exec(Runtime.java:489)
at videomaker.Source$2.run(Source.java:408)
at java.lang.Thread.run(Thread.java:568)

This happened with 3 different mpg files, but it didn't
happen with an avi file I tried.

Two of the mpg files came from the same source
(transport stream programs converted to mpg) the other
one was generated directly by a video program.

I guess there's something wrong with the headers of the
first two files. A tcscan and mpginfo on them reveals
some warnings/errors and generally odd things.

However, they play fine in mplayer, without any problem.
The avi file was converted from a similar mpg file
using avidemux2.
The other mpg file didn't give any errors or warnings
(See below). I'm including all this hoping that it may
help.

============================================
tcscan -i file1.mpg
found first packet header at stream offset 0x0
found unknown stream [0xbb]
found navigation pack [0xbf]
found ISO/IEC 13818-2 or 11172-2 MPEG video stream [0xe0]
sequence: 720x576 4:3, 25 fps, 4968 kbps, VBV
224 kB , Custom Non-Intra Matrix
found padding stream [0xbe]
found ISO/IEC 13818-3 or 11172-3 MPEG audio track 0 [0xc0]
pack header out of sequence at 0xfff80 (+0x800007ff)
end of stream reached
------------- presentation unit [0] ---------------
stream id [0xbb] 7426
stream id [0xbe] 360052
stream id [0xbf] 14852
stream id [0xc0] 180045
stream id [0xe0] 1274806
1837181 packetized elementary stream(s) PES packets found
presentation unit PU [0] contains 14851 MPEG video
sequence(s)
Average Bitrate is 71. Min Bitrate is 1334, max is 4968
(VBR)
---------------------------------------------------
(scan_pes.c) detected a total of 1 presentation unit(s)
PU and 14851 sequence(s)

============================================
mpginfo file1.mpg
warning: couldn't find any valid system header. I'm
continuing anyway
Mpeg 2 Program Stream File [Video/Audio]
Muxrate : 10.08 Mbps
Estimated Duration: 13:21:41.97s
Aspect ratio 4/3 (TV)
Interlaced, chroma format: 4:2:0
Video Format: Unspecified
Size [720 x 576] 25.00 fps 4.97 Mbps
Audio : Mpeg 1 layer 2
192 kbps 48000 Hz
Stereo, No emphasis

==============================================
tcscan -i file2.mpg
found first packet header at stream offset 0x0
found unknown stream [0xbb]
found MPEG-1 video stream [0xe0]
sequence: 352x240 Invalid Aspect Ratio, 29.97
fps, 620 kbps, VBV 40 kB , CP , Custom Non-Intra Matrix
found padding stream [0xbe]
found ISO/IEC 13818-3 or 11172-3 MPEG audio track 0 [0xc0]
found program end code [0xb9]
------------- presentation unit [329] ---------------
stream id [0xbb] 1
stream id [0xbe] 1757
stream id [0xc0] 203
stream id [0xe0] 1565
3526 packetized elementary stream(s) PES packets found
presentation unit PU [329] contains 1219 MPEG video
sequence(s)
Average Bitrate is 0. Min Bitrate is 4294966, max is 0
(VBR)
---------------------------------------------------
(scan_pes.c) detected a total of 1 presentation unit(s)
PU and 1219 sequence(s)

=============================================
mpginfo file2.mpg
Mpeg 1 System File [Video/Audio]
Muxrate : 0.72 Mbps
Estimated Duration: 40.18s
Size [352 x 240] 29.97 fps 0.62 Mbps
Audio : Mpeg 1 layer 2
80 kbps 44100 Hz
Mono, No emphasis