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• Convert set of PNGs into rawvideo .raw FFMPEG

  13 août 2020, par Wire

  Recently, I have been trying to modify the boot animation of a little robot. It is a .raw file and it contains every RGB565 frame one after the other. I have been able to get all of the frames using

  


  ffmpeg -f rawvideo  -pixel_format rgb565 -video_size 184x96 -framerate 10 -i "boot_anim.raw" -r 1/1 boot_anim%02d.png

  


  But if I try to repack it with

  


  ffmpeg -i boot_anim%02d.png -f rawvideo -pix_fmt rgb565 -framerate 10 -video_size 184x96 -r 1/1 "boot_anim.raw"

  


  it only puts in the first two frames and nothing else. I have also tried libx264 and putting in vcodecs manually. Same result. I'm new to ffmpeg and Linux overall.

  


  Here is the full output :

  


  ffmpeg version N-98716-gb40dd2f Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --enable-encoder=png --enable-decoder=png
  libavutil      56. 58.100 / 56. 58.100
  libavcodec     58.100.100 / 58.100.100
  libavformat    58. 50.100 / 58. 50.100
  libavdevice    58. 11.101 / 58. 11.101
  libavfilter     7. 87.100 /  7. 87.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
Input #0, image2, from 'boot_anim%02d.png':
  Duration: 00:00:00.44, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 184x96, 25 fps, 25 tbr, 25 tbn, 25 tbc
File 'boot_anim.raw' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[swscaler @ 0x556d6993d940] full chroma interpolation for destination format 'rgb565le' not yet implemented
Output #0, rawvideo, to 'boot_anim.raw':
  Metadata:
    encoder         : Lavf58.50.100
    Stream #0:0: Video: rawvideo (RGB[16] / 0x10424752), rgb565le, 184x96, q=2-31, 282 kb/s, 1 fps, 1 tbn, 1 tbc
    Metadata:
      encoder         : Lavc58.100.100 rawvideo
frame=    2 fps=0.0 q=-0.0 Lsize=      69kB time=00:00:02.00 bitrate= 282.6kbits/s dup=0 drop=9 speed= 871x    
video:69kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%


  


  Any help appreciated !

  


• FFmpeg need help forming a tee muxer to send in 2 social network simultaneously

  4 avril 2021, par Jintor

  I want to stream to youtube and twitter in 1 ffmpeg process

  


  i red this https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs

  


  I do this command

  


  /usr/bin/ffmpeg -re -i input.mp4 -deinterlace -c:v libx264 -pix_fmt yuv420p 
-preset veryfast -tune zerolatency -profile:v main -c:a aac -b:a 128k -ac 2 
-crf 19 -r 30 -g 60 -b:v 1369k -minrate 1369k -maxrate 1369k -bufsize 2738k 
-ar 44100 
-filter_complex "[0:v]split=2[s0]; [s0]scale=-2:1080[v0]" 
-map "[v0]" -map 0:a 
-f tee " [select='v:0,a':f=flv]rtmp://a.rtmp.youtube.com/live2/key | [select='v:0,a':f=flv]rtmps://va.pscp.tv:443/x/key "


  


  and I get in command line this

  


  [libx264 @ 0x55f7b71aae40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x55f7b71aae40] profile Main, level 4.0, 4:2:0, 8-bit
[libx264 @ 0x55f7b71a8f40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x55f7b71a8f40] profile Main, level 4.0, 4:2:0, 8-bit
[tee @ 0x55f7b71a6480] No option found near "0,a:f=flv]rtmp://a.rtmp.youtube.com/live2/r9yy-wtdf-rmkp-22qa-c9sb"
[tee @ 0x55f7b71a6480] Slave muxer #0 failed: Invalid argument, continuing with 1/2 slaves.
[tee @ 0x55f7b71a6480] No option found near "0,a:f=flv]rtmps://va.pscp.tv:443/x/v52px1yfiwuh"
[tee @ 0x55f7b71a6480] All tee outputs failed.
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:1 -- 
[aac @ 0x55f7b722fd80] Qavg: 298.166
[aac @ 0x55f7b722fd80] 2 frames left in the queue on closing
Conversion failed!


  


  What is wrong with my command ?

  


• Multiple side-to-side video streams in one file without transcoding

  10 avril 2019, par Serg Fillipenko

  I am investigating a possibility to store video streams which are coming from few sources already coded in h264 without video transcoding as the device I would like to use for this project won’t be capable of transcoding combined video on the fly.

  What I am looking for is two or more pictures side to side (not video concatenation) packed into mp4/avi/mkv.

  I believe mkv container supports such kind of packaging but I’ve not been able to find appropriate options for ffmpeg or other tool to store it this way. What it does is very slow video transcoding into one big h264 stream.