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• What is the recommended method to get metadata from files uploaded with ffmpeg.wasm ? [closed]

  28 novembre 2023, par Palma Dulce

  I'm developing an app using vite react.js and ffmpeg.wasm and I'm having trouble to find out how to get the duration time of a file. I need to writeFile to the FS, read the metadata, get the time duration, store it in a variable so I can use it to encode other things.

  


  I've tried to get it through log and process calls, but the time in log always shows different results, and the time in progress shows me how long the process it's taking to finish, not the file duration time. I've tried to readFile in countless ways as well. I guess I could maybe do that by local directory reading methods, but I wish to do that only with ffmpeg.wasm. I'm currently running ffmpeg/core from its API, in the latest 12.4.0 version, and the ffmpeg/ffmpeg in its latest 12.7.0.

  


  I'm a beginner, so maybe the answer it's right in my face, but I spent a good amount of time trying and can't see to find a solution.

  


• uwp app throw error when install from package but works fine in any mode when run directly launching from visual studio

  30 septembre 2020, par Abhishek Sharma

  I have created an app wrapping FFmpeg in uwp now for the requirement
I have all the major dll of FFmpeg and then set to content and copy always in property
now when I launch the app installed from the visual studio in any mode weather release, debug, x86,x64 it works fine but as I created a package and then install the app and run it, it throws an error where it says that dll not found not directly but says file not found which is because of dll because I face that problem in debug mode before and it's because of dll not available to uwp
you can look at the project here : https://github.com/AbhiSharma9350/Winfftool

  


• ffmpeg Live Streaming Error : av_interleaved_write_frame() : Broken pipe

  5 octobre 2022, par Krishnakumar

  I am trying to stream video live using ffmpeg, Input is from a UDP Source. Most of the time it works fine, but I could see the following log lines and ffmpeg stop's the conversion/feed push to the rtmp server. Few log lines below for reference. Is this issue related to network on reaching the destination or source or something that i need to change in the ffmpeg command ?

  



  Wed Jun 17 07:53:22 2020 av_interleaved_write_frame(): Broken pipe
Wed Jun 17 07:53:48 2020     Last message repeated 1 times
Wed Jun 17 07:53:48 2020 av_interleaved_write_frame(): End of file
Wed Jun 17 07:53:49 2020     Last message repeated 1 times
Wed Jun 17 07:53:49 2020 [flv @ 0x40c87c0] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x40c87c0] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test1: Broken pipe
Wed Jun 17 07:53:49 2020 [flv @ 0x48fe140] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x48fe140] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test2: Broken pipe
Wed Jun 17 07:53:49 2020 [flv @ 0x4ccb5c0] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x4ccb5c0] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test3: End of file
Wed Jun 17 07:53:49 2020 [flv @ 0x4725840] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x4725840] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test4: Broken pipe
Wed Jun 17 07:53:49 2020 video:10594389kB audio:678081kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Wed Jun 17 07:53:49 2020 [libx264 @ 0x410c540] frame I:12400 Avg QP:19.58  size: 11797
Wed Jun 17 07:53:49 2020 [libx264 @ 0x410c540] frame P:359585 Avg QP:23.19  size:  1317


  



  Adding the ffmpeg command below :

  



  ffmpeg -err_detect aggressive -fflags discardcorrupt -i udp://230.1.1.2:11000?fifo_size=5000000&overrun_nonfatal=1 -analyzeduration 25M -probesize 50M -threads 0 -vsync 1 -filter_complex [i:0x202]yadif,setdar=16/9[1out1];[i:0x202]yadif,setdar=16/9[1out2];[i:0x202]yadif,setdar=16/9[1out3];[i:0x202]yadif,setdar=16/9[1out4] -map [1out1] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 200k -maxrate 200k -bufsize 300k -r 15 -g 30 -profile:v baseline -level 3.0 -pix_fmt yuv420p -c:a libfdk_aac -b:a 32k -ac 2 -ar 48000 -sc_threshold 0 -s 256x144 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test1-map [1out2] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 500k -maxrate 500k -bufsize 750k -r 25 -g 50 -profile:v baseline -level 3.0 -pix_fmt yuv420p -c:a libfdk_aac -b:a 64k -ac 2 -ar 48000 -sc_threshold 0 -s 512x288 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test2 -map [1out3] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 1000k -maxrate 1000k -bufsize 1500k -r 25 -g 50 -profile:v main -level 3.0 -pix_fmt yuv420p -c:a libfdk_aac -b:a 64k -ac 2 -ar 48000 -sc_threshold 0 -s 1024x576 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test3 -map [1out4] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 1800k -maxrate 1800k -bufsize 2700k -r 25 -g 50 -profile:v main -level 3.1 -pix_fmt yuv420p -c:a libfdk_aac -b:a 64k -ac 2 -ar 48000 -sc_threshold 0 -s 1280x720 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test4