[FFmpeg-trac] #5966(avdevice:new): ffmpeg/ffplay specify (H)DV camera's using iec61883 -dvguid option broken or wrong syntax?

[FFmpeg]

#5966: ffmpeg/ffplay specify (H)DV camera's using iec61883 -dvguid option broken
or wrong syntax?
--------------------------------------+------------------------------------
             Reporter:  walterav1984  |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avdevice
              Version:  git-master    |               Resolution:
             Keywords:  iec61883      |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
--------------------------------------+------------------------------------

Comment (by walterav1984):

 Is this the head version of ffmpeg, thats the one I cloned this afternoon.
 {{{
 git clone git://source.ffmpeg.org/ffmpeg
 }}}

 I cannot show the failing output of "ffmpeg" since its doesn't even fails
 on the -dvguid argument (bogus or not) I specify, ffmpeg will just record
 succesfull from the 1st connected camera on the specified firewire
 adapter(refered as port 1), although I'm specifying a other or wrong
 camera using the -dvguid code:
 {{{
 ./ffmpeg -f iec61883 -i 1 -dvtype dv -dvguid 0x0wronguidcode -target pal-
 dv -aspect 16:9 ~/Desktop/somecamera.dv
 ffmpeg version N-82572-gac206bb Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
   configuration: --enable-libiec61883 --extra-ldflags=-ldl --enable-ffplay
   libavutil      55. 40.100 / 55. 40.100
   libavcodec     57. 66.105 / 57. 66.105
   libavformat    57. 58.100 / 57. 58.100
   libavdevice    57.  2.100 / 57.  2.100
   libavfilter     6. 67.100 /  6. 67.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
 [iec61883 @ 0x3927560] Selecting IEEE1394 port: 1
 libiec61883 error: Failed to get channels available.
 Input #0, iec61883, from '1':
   Duration: N/A, start: 0.000000, bitrate: 30848 kb/s
     Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
 25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
     Stream #0:1: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
     Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
 Output #0, dv, to '/home/ubuntuadmin/Desktop/somecamera.dv':
   Metadata:
     encoder         : Lavf57.58.100
     Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
 q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.66.105 dvvideo
     Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
     Metadata:
       encoder         : Lavc57.66.105 pcm_s16le
 Stream mapping:
   Stream #0:0 -> #0:0 (dvvideo (native) -> dvvideo (native))
   Stream #0:1 -> #0:1 (pcm_s16le (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [dv @ 0x39455a0] Can't process DV frame #137. Insufficient audio data or
 severe sync problem.x
 frame=  139 fps= 25 q=-0.0 Lsize=   19266kB time=00:00:05.56
 bitrate=28385.6kbits/s speed=1.01x
 video:19547kB audio:1035kB subtitle:0kB other streams:0kB global
 headers:0kB muxing overhead: unknown

 }}}

 On the otherhand "ffplay" will show an error if the -dvguid is really
 wrong:

 {{{
 ./ffplay -f iec61883 -i 1 -dvtype dv -dvguid 2
 ffplay version N-82572-gac206bb Copyright (c) 2003-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
   configuration: --enable-libiec61883 --extra-ldflags=-ldl --enable-ffplay
   libavutil      55. 40.100 / 55. 40.100
   libavcodec     57. 66.105 / 57. 66.105
   libavformat    57. 58.100 / 57. 58.100
   libavdevice    57.  2.100 / 57.  2.100
   libavfilter     6. 67.100 /  6. 67.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
 [iec61883 @ 0x7f1100000920] Selecting IEEE1394 port: 1
 rom1394_1 warning: read failed: 0x0000fffff000040csq=    0B f=0/0
 rom1394_1 warning: read failed: 0x0000fffff0000410
 [iec61883 @ 0x7f1100000920] No AV/C devices found.
 1: Input/output error

 }}}

 Does this console output will clarify for a valid ticket as in "software
 bug" since the -dvguid option seems not be correctly parsed. Or as a valid
 ticket as in a request for a better documentation example howto use the
 -dvguid option using multiple camera's?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5966#comment:2>
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