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• There is no data in the inbound-rtp section of WebRTC. I don't know why

  13 juin 2024, par qyt

  I am a streaming media server, and I need to stream video to WebRTC in H.264 format. The SDP exchange has no errors, and Edge passes normally.

  


  These are the log debugging details from edge://webrtc-internals/. Both DTLS and STUN show normal status, and SDP exchange is also normal. I used Wireshark to capture packets and saw that data streaming has already started. The transport section (iceState=connected, dtlsState=connected, id=T01) also shows that data has been received, but there is no display of RTP video data at all.

  


  timestamp   2024/6/13 16:34:01
bytesSent   5592
[bytesSent_in_bits/s]   176.2108579387652
packetsSent 243
[packetsSent/s] 1.001198056470257
bytesReceived   69890594
[bytesReceived_in_bits/s]   0
packetsReceived 49678
[packetsReceived/s] 0
dtlsState   connected
selectedCandidatePairId CPeVYPKUmD_FoU/ff10
localCertificateId  CFE9:17:14:B4:62:C3:4C:FF:90:C0:57:50:ED:30:D3:92:BC:BB:7C:13:11:AB:07:E8:28:3B:F6:A5:C7:66:50:77
remoteCertificateId CF09:0C:ED:3E:B3:AC:33:87:2F:7E:B0:BD:76:EB:B5:66:B0:D8:60:F7:95:99:52:B5:53:DA:AC:E7:75:00:09:07
tlsVersion  FEFD
dtlsCipher  TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
dtlsRole    client
srtpCipher  AES_CM_128_HMAC_SHA1_80
selectedCandidatePairChanges    1
iceRole controlling
iceLocalUsernameFragment    R5DR
iceState    connected


  


  video recv info

  


  inbound-rtp (kind=video, mid=1, ssrc=2124085007, id=IT01V2124085007)
Statistics IT01V2124085007
timestamp   2024/6/13 16:34:49
ssrc    2124085007
kind    video
transportId T01
jitter  0
packetsLost 0
trackIdentifier 1395f18c-6ab9-4dbc-9149-edb59a81044d
mid 1
packetsReceived 0
[packetsReceived/s] 0
bytesReceived   0
[bytesReceived_in_bits/s]   0
headerBytesReceived 0
[headerBytesReceived_in_bits/s] 0
jitterBufferDelay   0
[jitterBufferDelay/jitterBufferEmittedCount_in_ms]  0
jitterBufferTargetDelay 0
[jitterBufferTargetDelay/jitterBufferEmittedCount_in_ms]    0
jitterBufferMinimumDelay    0
[jitterBufferMinimumDelay/jitterBufferEmittedCount_in_ms]   0
jitterBufferEmittedCount    0
framesReceived  0
[framesReceived/s]  0
[framesReceived-framesDecoded-framesDropped]    0
framesDecoded   0
[framesDecoded/s]   0
keyFramesDecoded    0
[keyFramesDecoded/s]    0
framesDropped   0
totalDecodeTime 0
[totalDecodeTime/framesDecoded_in_ms]   0
totalProcessingDelay    0
[totalProcessingDelay/framesDecoded_in_ms]  0
totalAssemblyTime   0
[totalAssemblyTime/framesAssembledFromMultiplePackets_in_ms]    0
framesAssembledFromMultiplePackets  0
totalInterFrameDelay    0
[totalInterFrameDelay/framesDecoded_in_ms]  0
totalSquaredInterFrameDelay 0
[interFrameDelayStDev_in_ms]    0
pauseCount  0
totalPausesDuration 0
freezeCount 0
totalFreezesDuration    0
firCount    0
pliCount    0
nackCount   0
minPlayoutDelay 0


  


  wireshark,I have verified that the SSRC in the SRTP is correct.

  


  enter image description here

  


  This player works normally when tested with other streaming servers. I don't know what the problem is. Is there any way to find out why the web browser cannot play the WebRTC stream that I'm pushing ?

  


• How to add blurred border on top and bottom based on the video

  5 avril 2023, par Noob69

  I am trying to modify a video to 1080x1920 scale and I want to add to the borders on top and bottom, a blurred version of the video based on the pixel on the edge.

  


  import subprocess

input_file = "my_video1.mp4"
output_file = "my_video_processed1.mp4"

command = f'ffmpeg -i {input_file} -vf "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,eq=saturation=2.0:gamma=1.2:contrast=1.2,unsharp=lx=5:ly=5:la=0.5:cx=5:cy=5:ca=0.5" -c:v libx264 -preset slow -crf 18 -c:a copy {output_file}'
subprocess.call(command, shell=True)



  


  I tried
mode = replicate, however it is not working for the latest version of ffmpeg from Windows builds by BtbN.

  


• Does FFmpeg currently support AVIF ?

  19 juillet 2022, par user19098011

  I installed FFmpeg using Chocolatey and confirmed that it is the latest version.
In order to convert the png file into an avif file, I gave the command as below in the cmd window of the administrator's authority.

  


  ffmpeg -i input.png output.avif


  


  Naturally, there are no characters in the file directory other than the ASCII code.
The following error codes were issued :

  


  [NULL @ 00000211e91fd800] Unable to find a suitable output format for 'output.avif'
output.avif: Invalid argument


  


  And I tried googling a few times.

  


  


  https://trac.ffmpeg.org/ticket/7621
  
https://avif.io/blog/tutorials/ffmpeg/

  


  


  etc. in other googling, there were no meaningful results.
Anyway, AVIF is supported on these sites.
I tried to write commands as they were required, but the command ffmpeg -i image.png -c:v libaom-av1 -still-picture 1 image.avif provided by the avif.io site did not work with the following error codes left below.

  


  


  Unrecognized option 'still-picture'.
  
Error splitting the argument list : Option not found

  


  


  AVIF is such a recent format that I don't even know if it's really supported by FFmpeg.
It is sure ? What should I do ? And if FFmpeg does not support AVIF, what can be a substitute ?