[FFmpeg-trac] #11033(tools:new): "Bitrate" function in udp out don't working if more than 1.35 Mbps

FFmpeg trac at avcodec.org
Sun May 26 00:58:49 EEST 2024


#11033: "Bitrate" function in udp out don't working if more than 1.35 Mbps
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             Reporter:  Dominique  |                     Type:  defect
               Status:  new        |                 Priority:  normal
            Component:  tools      |                  Version:  6.1.1
             Keywords:             |               Blocked By:
             Blocking:             |  Reproduced by developer:  0
Analyzed by developer:  0          |
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 "Bitrate" function in udp out don't working if more than 1.35 Mbps on
 Windows with differents versions of ffmpeg 5 6 7 and on Windows10
 In live stream with codec libx264 or 265 or hevc_qsv or hevc_nvenc:
 This fonction work properly with bitrate < 1350kbs With differents
 computer or ffmpeg 5 or 6 or 7 the flow is always limited to 1350kbs with
 bitrate > 1350kbs on windows.
 Example: "-f mpegts -muxrate 2000000
 udp://192.168.0.30&bitrate=2000000&overrun_nonfatal=1&fifo_size=262140&buffer_size=262140
 I read that someone encountered this problem on Windows but not on Linux
 but I can't test it
 I try setting/increasing burst_bits without modification.
 This fonction is need to test dvb experimentation with constant flow.

 example with bitrate 2644506 bps analyse with TSReaderLite:
 [[Image(C:\Users\Dom\Desktop\flow1.JPG)]]
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Ticket URL: <https://trac.ffmpeg.org/ticket/11033>
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