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  • FFServer Timeshift Tee Muxer Output

    9 septembre 2017, par Aaron

    When feeding into ffserver from ffmpeg using the tee muxer, clients connecting with the ?date=HH:MM:SS option aren’t being properly timeshifted, they just get the live stream. My best guess is that timestamps aren’t being applied correctly to the incoming feed.

    Here’s the ffmpeg command I’m using with the tee muxer :

    $ ffmpeg -v 32 -threads 1 -f mpegts -analyzeduration 2000000 \
    
         -i "http://192.168.1.175:5004/auto/v4.1?duration=600" \
    
         -flags +global_header -f tee -map 0:v -map 0:a \
    
         -c:a aac -c:v h264 -preset veryfast \
    
         -b:v 3000k -bufsize 24000k -minrate 2400k -maxrate 3000k \ 
    
         "[select=\'v:0,a:0:1\']/Users/aaron/Movies/test.mp4|[select=\'v:0,a:0\']http://localhost:1234/feed.ffm"

    Here’s the contents of my ffserver configuration :

    HTTPPort 1234
    
HTTPBindAddress 0.0.0.0
    
MaxClients 5
    
CustomLog ffserver.log
    
MaxBandwidth 50000
    

    
<feed>
    
File feed.ffm
    
FileMaxSize 16384M
    
ACL allow localhost
    
</feed>
    

    
<stream>
    
Feed feed.ffm
    
Format mpegts
    
AudioCodec aac
    
AudioBitRate 128
    
AudioChannels 2
    
AudioSampleRate 44100
    
AVOptionAudio flags +global_header
    

    
VideoCodec libx264
    
AVOptionVideo preset veryfast
    
VideoBitRate 3000
    
VideoFrameRate 30
    
VideoBufferSize 24000
    
VideoSize hd1080
    
AVOptionVideo flags +global_header
    
</stream>

    The transcode, mp4 output, and stream all work, the only problem is the lack of timeshifting.

    Removing the tee muxer and just doing the feed to ffserver fixes the timeshifting. With this command :

    ffmpeg -v 32 -threads 1 -f mpegts -analyzeduration 2000000 \
    
       -i "http://192.168.1.175:5004/auto/v4.1?duration=600"  \
    
       -f ffm -map 0:v -map 0:a -c:a aac -c:v h264 -preset veryfast \
    
       -b:v 3000k -bufsize 24000k -minrate 2400k -maxrate 3000k \
    
       http://localhost:1234/feed.ffm

  • avutil/hwcontext_d3d11va : Fix leak when wrapping texture in AVD3D11FrameDescriptor

    5 novembre 2017, par Greg Wessels
    avutil/hwcontext_d3d11va : Fix leak when wrapping texture in AVD3D11FrameDescriptor

    Reviewed-by : Aaron Levinson <alevinsn_dev@levland.net>
    
Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libavutil/hwcontext_d3d11va.c

  • avdevice/decklink_enc : Add support for output of Active Format Description (AFD)

    27 mars 2023, par Devin Heitmueller
    avdevice/decklink_enc : Add support for output of Active Format Description (AFD)

    Implement support for including AFD in decklink output when putting
    
out 10-bit VANC data.
    

    Updated to reflect feedback in 2018 from Marton Balint <cus@passwd.hu>,
    
Carl Eugen Hoyos <ceffmpeg@gmail.com> and Aaron Levinson
    
<alevinsn_dev@levland.net>.  Also includes fixes to set the AR field
    
based on the SAR, as well as now sending the AFD info in both fields
    
for interlaced formats.
    

    Signed-off-by : Devin Heitmueller <dheitmueller@ltnglobal.com>
    
Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavdevice/decklink_enc.cpp

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