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• ffmpeg can't convert mp4 to mp3 Output file #0 does not contain any stream

  21 août 2018, par Golden Fingers

  I can't convert mp4 file to mp3 via ffmpeg. I tried these commands but they are not working and show the same error:

  Output file #0 does not contain any stream

  These are the commands:

  ffmpeg -i input.mp4 -c copy  -f mpegts output.mp3
  
  ffmpeg -i input.mp4 -acodec libmp3lame output.mp3
  
  ffmpeg -i input.mp4 -vn -f mp3 -ab 192k output.mp3
  
  ffmpeg -i input.mp4 -vn -f wav - | \
         lame -V 3 - output.mp3
  

  Please help me.

  this is log -> ffmpeg -i input.mp4 -c copy -vn output.mp3

  ffmpeg version 2.8.8 Copyright (c) 2000-2016 the FFmpeg developers
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-28)
    configuration: --disable-static --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-libmp3lame --enable-libx264 --enable-libvpx --enable-libvorbis --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencore-amrnb --enable-libtheora --enable-libxvid --enable-libfdk_aac --enable-libopus --enable-libfreetype --enable-libfaac
    libavutil      54. 31.100 / 54. 31.100
    libavcodec     56. 60.100 / 56. 60.100
    libavformat    56. 40.101 / 56. 40.101
    libavdevice    56.  4.100 / 56.  4.100
    libavfilter     5. 40.101 /  5. 40.101
    libswscale      3.  1.101 /  3.  1.101
    libswresample   1.  2.101 /  1.  2.101
    libpostproc    53.  3.100 / 53.  3.100
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
    Metadata:
      major_brand     : dash
      minor_version   : 0
      compatible_brands: iso6avc1mp41
      creation_time   : 2018-05-11 00:18:13
    Duration: 00:44:01.47, start: 0.000000, bitrate: 61 kb/s
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 0 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
      Metadata:
        creation_time   : 2018-05-11 00:18:13
        handler_name    : VideoHandler
  Output #0, mp3, to 'output.mp3':
  Output file #0 does not contain any stream
  

• how do i overlay an image on ffmpeg which moves across the video and also changes size as it moves ?

  21 août 2018, par mystique

  something like what has been proposed here: FFmpeg move overlay from one pixel coordinate to another

  but I want the size to dynamically change with time

• ffmpeg : How to create multi playlist m3u8 ?

  21 août 2018, par noc

  I have an example:

  ffmpeg -loglevel debug -threads 4 -vsync 1 -i 'bunny.mp4' -vf yadif -g 29.97 -r 29.97 -b:v:0 5250k -c:v h264_nvenc -preset llhq -vcodec vbr_hq -pix_fmt yuv420p -profile:v main -level 4.1 -strict_gop 1 -rc-lookahead 32 -no-scenecut 1 -forced-idr 1 -gpu 0 -b:v:1 4200k -c:v h264_nvenc -preset llhq -rc:v vbr_hq -pix_fmt yuv420p -profile:v main -level 4.1 -strict_gop 1 -rc-lookahead 32 -no-scenecut 1 -forced-idr 1 -gpu 1 -b:v:1 3150k -c:v h264_nvenc -preset llhq -rc:v vbr_hq -pix_fmt yuv420p -profile:v main -level 4.1 -strict_gop 1 -rc-lookahead 32 -no-scenecut 1 -forced-idr 1 -gpu 2 -b:a:0 256k -b:a:0 192k -b:a:0 128k -c:a aac -ar 48000  -map 0:v -map 0:a:0 -map 0:v -map 0:a:0 -map 0:v -map 0:a:0 -f hls -var_stream_map "v:0,a:0  v:1,a:1 v:2,a:2" -master_pl_name  master.m3u8 -t 300 -hls_time 10 -hls_init_time 4 -hls_list_size 10 -master_pl_publish_rate 10 -hls_flags delete_segments+discont_start+split_by_time "out/manifest.m3u8" 
  

  but alltime a have error like: Unrecognized option 'rc:v' Unrecognized option 'strict_gop'

  I'd like to create the playlist like this:

  #EXTM3U
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=688301
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/0640_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=165135
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/0150_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=262346
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/0240_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=481677
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/0440_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=1308077
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/1240_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=1927853
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/1840_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=2650941
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/2540_vod.m3u8
  #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=3477293
  http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/3340_vod.m3u8
  

  with ability to choose quality in player (videojs)

• How to get changeable codec properties from midstream in ffmpeg ? [on hold]

  21 août 2018, par 杨新峰

  I'm using FFmpeg library to process live stream，how to print changeable codec properties when it change?

• FFmpeg scale and concat with dynamic height

  21 août 2018, par Praveen Tamil

  Hi below is the code I'm using to concat multiple images.

  ffmpeg -loop 1 -t 1 -i img1.jpeg -loop 1 -t 1 -i img2.jpeg -loop 1 -t 1 -i img3.jpeg 
  -loop 1 -t 1 -i img4.jpeg -filter_complex "
  [0:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v0];
  [1:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v1];
  [2:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v2];
  [3:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v3];
  [v0][v1][v2][v3]concat=n=4"  output.gif
  

  But I'm getting below issue