1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
2015-03-09
Version 1.4.1
- Fixed login failure bug, which affected
certain OSes and prevented access to a DVR/IP camera.
- Eliminates flood of "Unknown DHAV frame type received: f1"
messages, which affected some devices.
2014-12-23
Version 1.4.0
- Extensive fixes and changes in the DVR protocol
routines, including new workarounds for protocol
version-dependent firmware bugs/changes.
Some DVRs which did not work,
possibly all with >=3.x firmware, will do now.
- Some DVRs output a simple MPEG stream instead
of DHAV. Added partial support for that:
videos will play, albeit with some problems.
- Removed support for channel parameter in
dhav2mkv, due to lack of practical use.
2014-09-04
Version 1.3.0
- Implemented support for DVR protocol extensions,
allowing access to channels beyond the 16th.
- Workarounded firmware bug in DVRs sending wrong
channel ID, some channels were not accessible
in certain DVRs.
- Now checks whether specified channel number is
within the valid range of actual target DVR.
- dhav2mkv no longer requires specifying the
channel ('-c' option).
- Added information to -m0 dump:
split screen (available modes).
2013-03-20
Version 1.2.0
- Fixed DHAV parser bugs. Improved compatibility with
certain devices.
- Added heuristic aspect-ratio calculation and output to MKV.
Aspect-ratio was previously hard-coded to 4:3.
- Improved heuristic NTSC vs PAL detection for DHAV streams.
- Debug (compile-time) mode now outputs DHAV headers.
- Now a warning is issued when unknown DHAV header types
are found.
- Manual network port specification did not work. Fixed.
- Connection initialization was too sensitive to network
latency. Fixed.
- Added new option: --net-protocol-dialect
- Added information to -m0 dump:
device chipset, wireless alarm and DVR access URL.
2012-07-02
Version 1.1.0
- Added standalone dhav2mkv tool, which converts
DHAV files/streams to MKV files/streams.
- Some janitorial work on debug (-DDEBUG) code.
- Corrupted DHAV streams were not properly resynced, resulting
in "No DHAV header. Skipping garbage..." looping forever.
Fixed.
2012-03-04
Version 1.0.0
- Adopted a multi-process, fully buffered, architecture
for stream processing.
It is now far, far more robust to DVR/network instabilities.
Also robust against local IO load spikes, preventing
loss of frames in such cases.
Now able to enforce timeouts immediately.
Allows a CONTINUOUS local video stream regardless DVR
disconnections. Connection breaks are resumed almost
instantaneously (provided the DVR/network are still
working, otherwise keep retrying). Now it is possible
to stream continuous live video for days, months long.
- Implemented corrupted data detection and recovery
for video stream (at container level, not at codec
level).
- Reimplemented timestamp correction routines.
Now far more robust, detects and correct most -
possibly all - time anomalities present in the video stream,
due to DVR bugs.
- Added support for NTSC video streams with exact 60.0 Hz
field rate (not the usual 59.94 Hz).
See "-x" option.
- Fixed MKV output bugs: lack of resolution and
frame rate information.
- MKV output uses micro-second resolution now (it used to
be mili-seconds).
- Added routine for NTSC/PAL detection from the stream
data. DVR self-reported system is not used.
- Reimplemented the keep-alive routine. Now far less
aggressive and yet far more effective.
- Adopted GNU Autotools as build system.
- TaniDVR did not stop execution is there was an I/O error
while writting data (disk error, stdout broken). Fixed.
- General code reorganization and cleanup.
- Other minor features/bugfixes.
2011-01-15
Version 0.0.3
- Implemented support for sub-channels (auxiliary streams).
- Implemented DHAV demux and MKV mux properly.
Now video frames fragmented across the DVR protocol
packets are correctly processed.
Frame timing is based on the timestamps provided by
the DVR with jitter correction. NTSC timing is correct.
Now TaniDVR waits for the first I-frame to come before
sending video data (no more initial video garbage
which happened in the primary sub-channel).
Streams with audio no longer generate corrupted video
data (though audio is not currently supported, audio
data is simply discarded).
- Fixed several bugs related to network errors, so now
TaniDVR won't simply lockup (or crash) when connection
goes down, or when the DVR "decides" to no longer send data.
- Changed 'keep-alive' to the same method as used
by the 'official' DVR client software.
Also changed that to a more aggressive timing, so
the DVR will not stop responding so often.
- Network inactivity timeout is reduced,
fixed to 30 seconds now.
2011-01-05
Version 0.0.2
First public release.
|
