[FFmpeg-trac] #6038(ffmpeg:new): Capturing from Decklink card broken after December 10 releases

FFmpeg trac at avcodec.org
Thu Dec 22 12:30:09 EET 2016


#6038: Capturing from Decklink card broken after December 10 releases
-------------------------------------+-------------------------------------
             Reporter:  BlackScreen  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:  git-
             Keywords:  decklink     |  master
  capture broken                     |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 I recently encountered a problem, when updating my FFmpeg version from a
 release in Mid November, to the current one. I am using the Windows builds
 (64 Bit) from Zeranoe.

 FFmpeg is used in one of my scripts to capture video from a Decklink card.
 After the update, I get an error message and it does not work.
 I then checked the recent versions and found the last working version was
 the one labelled "20161210-edb4f5d". The next one (20161216-a5cf600) does
 not work and all after that do not work either.

 I get the error message: "Unrecognized option 'video_input' - Error
 splitting the argument list: Option not found". The same happens when I
 strip the "video_input"-option from the command line and also if I delete
 "audio_input". Then the error message is: "Unknown input format:
 'decklink'"

 I should say that I use VLC to check the recording via the local UDP
 stream.
 Evertything else should be self explanotory.

 I have attached for you the log files of my tests with the current build,
 3.2.2 and the last working version. I quit the working version after about
 6 seconds of capturing.

 How to reproduce:
 {{{
 FFmpeg.exe -r 25 -rtbufsize 2048M -channels 2 -video_input sdi
 -audio_input embedded -f decklink -i "DeckLink HD Extreme 3D at 9"
 -filter_complex "[0:v] yadif, split=2 [recording] [stream]" -map
 "[recording]" -map 0:a:0 -vcodec libx264 -s 1920x1080 -pix_fmt yuv420p
 -preset ultrafast -crf 18 -profile:v high -level 4.0 -acodec aac -ab 256k
 "capture.mp4" -map "[stream]" -map 0:a:0 -vcodec libx264 -s 1920x1080
 -pix_fmt yuv420p -preset ultrafast -crf 18 -profile:v high -level 4.0
 -acodec aac -ab 256k -f mpegts "udp://localhost:1234" -hide_banner
 ffmpeg version N-82833-gedb4f5d
 built on 2016-12-10
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/6038>
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