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• ffmpeg rtmp and local file output

  19 mai 2016, par user3922282

  I’m new in stackoverflow =)
  I have a trouble with ffmpeg
  I receive a rtsp stream from a grabbing device (camera) and I stream-out it to rtmp (Youtube Live)
  I want to have a copy of the stream in my computer so I write at the same time in a local file

  I use this command :

  ffmpeg -y -i ’RTSP_SOURCE’ -c:v copy -c:a libvo_aacenc -map 0:v -bsf:v
  dump_extra -fflags +genpts -flags +global_header -movflags +faststart
  -map_metadata 0 -metadata title= -f tee -filter_complex aevalsrc=0 ’[f=mp4]/tmp/backup.mp4|[f=mpegts]/tmp/backup.ts|[f=flv]rtmp ://a.rtmp.youtube.com/live2/STREAM_ID’

  The problem is when I have some disconnections, ffmpeg exits and stop to recording
  Is there any flag or option for telling to ffmpeg to continue recording in local files even there is not internet ?

  Thank you very much for your help =)

• Using Unicast RTSP URIs via ffmpeg

  6 août 2019, par Chris Marshall

  I’m fairly new to ffmpeg, so I’d certainly appreciate being given an "M" to "RTFM." The ffmpeg docs are...not-so-easy...to navigate, but I’m trying.

  The goal is to develop a compiled server that incorporates ffmpeg, but first, I need to get it working via CLI.

  I have a standard AXIS Surveillance camera (AXIS M5525-E), set up as an ONVIF device (but that isn’t really relevant to this issue).

  When I query it, I get the following URI as its video streaming URI :

  rtsp://192.168.4.12/onvif-media/media.amp?profile=profile_1_jpeg&streamtype=unicast

  The IP is local to a sandboxed network.

  I add the authentication parameters to it, like so :

  rtsp://<login>:<password>@192.168.4.12/onvif-media/media.amp?profile=profile_1_jpeg&amp;streamtype=unicast
  
  </password></login>

  (Yeah, I know that’s not secure, but this is just for testing and feasibility study. The whole damn sandbox is an insecure mess).

  Now, if I use VLC to open the URI, it works great (of course). Looking at it with a packet analyzer, I see the following negotiation between the device and my computer (at .2 - Clipped for brevity) :

  Id = 11
  
  Source = 192.168.4.12
  
  Destination = 192.168.4.2
  
  Captured Length = 82
  
  Packet Length = 82
  
  Protocol = TCP
  
  Date Received = 2019-08-06 12:18:37 +0000
  
  Time Delta = 1.342024087905884
  
  Information = 554 -> 53755 ([ECN, ACK, SYN], Seq=696764098, Ack=3139240483, Win=28960)
  
                      °
  
                      °
  
                      °
  
  Id = 48
  
  Source = 192.168.4.12
  
  Destination = 192.168.4.2
  
  Captured Length = 366
  
  Packet Length = 366
  
  Protocol = TCP
  
  Date Received = 2019-08-06 12:18:38 +0000
  
  Time Delta = 2.09382700920105
  
  Information = 554 -> 53755 ([ACK, PUSH], Seq=696765606, Ack=3139242268, Win=1073)

  Followed immediately by UDP stream packets.

  If, however, I feed the same URI to ffmpeg :

  ffmpeg -i rtsp://<login>:<password>@192.168.4.12/onvif-media/media.amp?profile=profile_1_jpeg&amp;streamtype=unicast -c:v libx264 -crf 21 -preset veryfast -g 30 -sc_threshold 0 -f hls -hls_time 4 /Volumes/Development/webroot/fftest/stream.m3u8
  
  </password></login>

  I get nothing. No negotiation at all between the device and my computer.

  After that, if I then remove the &streamtype=unicast argument, I get a negotiation, and a stream :

  Id = 10
  
  Source = 192.168.4.12
  
  Destination = 192.168.4.2
  
  Captured Length = 82
  
  Packet Length = 82
  
  Protocol = TCP
  
  Date Received = 2019-08-06 10:37:48 +0000
  
  Time Delta = 3.047425985336304
  
  Information = 554 -> 49606 ([ECN, ACK, SYN], Seq=457514925, Ack=2138974173, Win=28960)
  
                      °
  
                      °
  
                      °
  
  Id = 31
  
  Source = 192.168.4.12
  
  Destination = 192.168.4.2
  
  Captured Length = 345
  
  Packet Length = 345
  
  Protocol = TCP
  
  Date Received = 2019-08-06 10:37:49 +0000
  
  Time Delta = 3.840152025222778
  
  Information = 554 -> 49606 ([ACK, PUSH], Seq=457516393, Ack=2138975704, Win=1039)

  I will, of course, be continuing to work out why this is [not] happening, and will post any solutions that I find, but, like I said, I’m fairly new to this, so it’s entirely possible that I’m missing some basic stuff, and would appreciate any guidance.

  Thanks !

• How can some applications download and install ffmpeg just with one click ?

  26 septembre 2023, par Nacho B

  I have seen some applications that, as part of their setup process, offer a button to simply download and install ffmpg.

  


  How can this be possible without the user consciously installing it from the ffmpeg developers page or using a proper installer ?

  


  Can I simply store a finished build of ffmpeg to be downloaded and automatically copied to a specific location on the user's computer ?

  


  EDIT :

  


  I have found a related question with some answers, but none has been accepted (How to install ffmpeg and an app together on a Mac ?).

  


  It will be fine for me to just ask the user if they agree to download it. Then the app will download my ffmpeg build (stored in my website) to be copied in one specific directory to not interfere with other ffmpeg installations.