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• Looping Variables in a Batch File (for use with FFmpeg)

  16 avril 2021, par OrdinaryCarrot16

  I am creating a batch script that stores the input of the user into variables, that will later be used for creating converting files then adding metadata (via FFmpeg). It is working pretty good, now I'm just trying to figure out how to loop the FFmpeg line that uses all the variables the user inputted, and it will loop the command till it reaches the number specified in the 'track_amount' variable.

  


  Do you have any ideas on how to make this work ? Thanks !

  


  setlocal enabledelayedexpansion

:: Scan current directory for audio files
DIR *.mp3 OR *.m4a

set /P cover-art=Select the Audio/Image File with the Cover Art (ex. MP3/M4A or JPG/PNG): 
set /P artist=Artist/Band Name: 
set /P track_amount=How many tracks are in this album: 

if %track_amount% GTR 1 (
    set /P album=Album Name: 
)

set /P filename=Song File Name: 
set /P title=Song Name: 
set /P track=Track Number: 
set /P genre=Genre: 
set /P language=Language: 

ffmpeg -i "%cover-art%" -vf scale=512:512 -sws_flags bicubic cover_tmp.png

for %%t in (!track_amount!) do ffmpeg -i "%filename%" -i cover_tmp.png -map_metadata -1 -map 0:0 -map 1:0 -id3v2_version 3 -metadata artist="%artist%" -metadata album="%album%" -metadata title="%title%" -metadata track="%track%/%track_amount%" -metadata genre="%genre%" -metadata language="%language%" -c:1 png -disposition:1 attached_pic -c:a libmp3lame -ar 44100 -b:a 160k "%title%.mp3"

pause


  


• FFmpeg problems with playing a stream

  13 avril 2021, par Niko

  I want to play a stream over network. While my server works I can't get it working receiving audio on client. It's router with openwrt installed and usb soundcard.

  


  When i run
ffmpeg -i "udp://@:5555" -f alsa hw:0 i get a following error

  


  [NULL @ 0x76b2b390] Requested output format 'alsa' is not a suitable output format
hw:0: Invalid argument


  


  What's wrong with my command ?
On router there is limited space. I hardly handled to install ffmpeg.

  


  There is complete log :

  


  root@LEDE:/proc/asound# ffmpeg -i "udp://@:5555" -f alsa hw:0
ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.4.0 (LEDE GCC 5.4.0 r3101-bce140e)
  configuration: --enable-cross-compile --cross-prefix=mips-openwrt-linux-musl- --arch=mips --target-os=linux --prefix=/usr --pkg-config=pkg-config --enable-shared --enable-static --enable-small --enable-pthreads --enable-zlib --disable-doc --disable-debug --enable-gpl --enable-version3 --disable-dxva2 --disable-lzma --disable-vaapi --disable-vda --disable-vdpau --disable-outdevs --disable-altivec --disable-vsx --disable-power8 --disable-amd3dnow --disable-amd3dnowext --disable-mmx --disable-mmxext --disable-sse --disable-sse2 --disable-sse3 --disable-ssse3 --disable-sse4 --disable-sse42 --disable-avx --disable-xop --disable-fma3 --disable-fma4 --disable-avx2 --disable-aesni --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-inline-asm --disable-mipsdsp --disable-mipsdspr2 --disable-mipsfpu --disable-msa --disable-mmi --disable-fast-unaligned --disable-runtime-cpudetect --disable-yasm --enable-libopus --enable-decoder=libopus --enable-libx264 --enable-libmp3lame
  libavutil      55. 34.100 / 55. 34.100
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.100 / 57. 56.100
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
Input #0, mpegts, from 'udp://@:5555':
  Duration: N/A, start: 1.400000, bitrate: 384 kb/s
  Program 1 
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:0[0x100]: Audio: mp2 ([3][0][0][0] / 0x0003), 44100 Hz, stereo, s16p, 384 kb/s
[NULL @ 0x76b2b390] Requested output format 'alsa' is not a suitable output format
hw:0: Invalid argument


  


• avcodec/cfhd : Keep track of which subbands have been read

  3 avril 2021, par Michael Niedermayer

  avcodec/cfhd : Keep track of which subbands have been read
  This avoids use of uninitialized data
  
  also several checks are inside the band reading code
  
  so it is important that it is run at least once
  Fixes : out of array accesses
  
  Fixes : 28209/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5684714694377472
  
  Fixes : 32124/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5425980681355264
  
  Fixes : 30519/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-4558757155700736
  Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/cfhd.c
  • [DH] libavcodec/cfhd.h