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• qt faststart and ffmpeg to generate a live mp4 file [duplicate]

  27 février 2014, par Dnaso

  This question already has an answer here :

  • Live video streaming using progressive download (and not RTMP) in Flash
    
    2 answers
    

  I am using ffmpeg to create an mp4 file on my server. I am also trying to use qt fast start to be able to move the moov atom to the front so it will stream. I have searched all over the internet with no luck. Is it possible to put my video/audio in a mp4 buffer type file and then be able to play it while ffmpeg is still dumping video and audio data into the stream ? the point is I am trying to stream from a camera and Android is horrid... I know both ios and android support mp4 so I was trying to figure a way I can make my rtsp Mp4.

  main point of the story : I want to continuously feed my mp4 container my camera feed and still be able to playback the file os my clients can watch.

  any help appreciated thank you.

• ffmpeg, we reported the error of av_interleaved_write_frame() : End of fileB Error writing trailer of rtmps ://live-api-s.facebook.com:443/rtmp/*

  21 octobre 2022, par yong zhang

  We want to implement such a small function, using webrtc technology on the web side to push the stream to the webrtc service of SRS, and then push the rtmp stream of SRS to the go live of facebook through ffmpeg to push the live broadcast. But we encountered a problem. When we forwarded and pushed the stream with ffmpeg, we reported the error of av_interleaved_write_frame() : End of fileB Error writing trailer of rtmps ://live-api-s.facebook.com:443/rtmp/. Please help and guide the heroes to see where the problem may occur.
The command we executed is : ./ffmpeg -threads 2 -thread_queue_size 9512 -re -i "rtmp ://xxx.xxx.xxx:1935/live/" -max_muxing_queue_size 1024 -force_key_frames "expr:gte (t,n_forced2)" -vf crop=in_w:in_w9/16,scale=1280:720 -reorder_queue_size 4000 -max_delay 10000000 -c:v libx264 -preset veryfast -b:v 3000k -maxrate 1500k -bufsize 4000k -g 50 -c:a aac -ac 2 -ar 48000 -f flv -r 30 -flvflags no_duration_filesize "rtmps ://live-api-s.facebook.com:443/rtmp/"
The ffmpeg version is : 4.13 and above all the same error.
SRS version : 5.56

  


• seeking in a file that ffmpeg is processing from a live stream

  8 mai 2024, par Ken Mandelberg

  I'm using ffmpeg to take input from a live stream and write an mkv file. The stream runs a few hours. I want to play the mkv file while this is in progress. I find that the players basically do "seeks" by playing through the file, which is ok for very short "seeks" but not for very long ones.

  


  When the ffmpeg ends it finalizes the mkv file, and seeks long or short work fine.

  


  What can I do to be able to have a more usable mkv while ffmpeg is in progress ? I suppose I could force ffmpeg to create a new mkv file every hour, with a name including an index. (Is there any automation for that ?), but I was hoping for some way to force periodic finalizations to the single file.

  


  This is on Linux.