Recherche avancée

Sur d’autres sites (9226)

• How to stop ffmpeg user screen recording in c#

  14 juin 2016, par Akash Langhani

  I am using ffmpeg in application and It start and record video perfectly but when I want to stop it ask for press "q", so how can I pass "q" to process which is in runing state from application.

• rtsp : Fix infinite loop in listen mode with UDP transport

  30 septembre 2020, par Martin Storsjö

  rtsp : Fix infinite loop in listen mode with UDP transport
  In listen mode with UDP transport, once the sender has sent
  
  the TEARDOWN and closed the connection, poll will indicate that
  
  one can read from the connection (indicating that the socket has
  
  reached EOF and should be closed by the receiver as well). In this
  
  case, parse_rtsp_message won't try to parse the command (because
  
  it's no longer in state STREAMING), but previously just returned
  
  zero.
  Prior to f6161fccf8c5720ceac1ed1df8ba60ff8fed69f5, this caused
  
  udp_read_packet to return zero, which is treated as EOF by
  
  read_packet. But after that commit, udp_read_packet would continue
  
  if parse_rtsp_message didn't return an explicit error code.
  To keep the original behaviour from before that commit, more
  
  explicitly return an error in parse_rtsp_message when in the wrong
  
  state.
  Fixes : #8840
  
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavformat/rtsp.c

• Automatic encoder selection failed for output stream #0:1

  9 juin 2018, par Rafael Lima

  I’m trying to use ffmpeg for edit some videos on android...
  It is working fine but if I try to use drawtext i get error

  the command is :

  path/ffmpeg -y -i /path/asd.mp4 -map 0 -segment_time 15 -f segment -c:v libx264 -preset veryfast -crf 30 -vf "drawtext=text='test message ':fontfile=/path/arial.ttf:box=1:boxborderw=30:boxcolor=0xE86F67@0.7:fix_bounds=true:fontcolor=0x2A363B:fontsize=32:x=0:y=h" -r 30 -force_key_frames expr:gte(t,n_forced*15) -an /path/temp%03d.mp4

  and the error is :

   ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
  
   configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=linux --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --sysroot=/home/rafa/Desktop/m4/ndk/toolchain/i686/sysroot --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --enable-librtmp --enable-zlib --enable-libfreetype --enable-openssl --enable-libfontconfig --disable-asm --disable-devices --extra-cflags=-mno-stackrealign
  
    libavutil      56. 14.100 / 56. 14.100
  
   libavcodec     58. 18.100 / 58. 18.100
  
    libavformat    58. 12.100 / 58. 12.100
  
    libavdevice    58.  3.100 / 58.  3.100
  
       libavfilter     7. 16.100 /  7. 16.100
  
      libswscale      5.  1.100 /  5.  1.100
  
       libswresample   3.  1.100 /  3.  1.100
  
       libpostproc    55.  1.100 / 55.  1.100
  
  
  
  
  
  
  
     major_brand     : isom
  
       minor_version   : 512
  
       compatible_brands: isomiso2avc1mp41
  
       title           : 20180226 174005
  
       artist          : Rafael Lima
  
       date            : 2018
  
       encoder         : Lavf55.49.100
  
       comment         : https://www.youtube.com/watch?v=bkzc9mLyCyo
  
     Duration: 00:03:26.94, start: 0.000000, bitrate: 4156 kb/s
  
       Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 4025 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc (default)
  
       Metadata:
  
         handler_name    : VideoHandler
  
       Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
       Metadata:
  
         handler_name    : SoundHandler
  
   Automatic encoder selection failed for output stream #0:1. Default encoder for format segment (codec none) is probably disabled. Please choose an encoder manually.
  
   Error selecting an encoder for stream 0:1

  things to considere :
  1. I’ve checked 3 times all the paths are valid
  2. I’ve tested the same command on ffmpeg 4.0 on windows and it works [with the same video]
  3. If I remove the drawtext filter it works fine...

  I tought it ffmpeg was built without drawtext or with some error so i spent 10 days in order to build it bymyself and guarantee every dependency is ok... but at end i got the same error

  does anyone have any idea please

  ==============================
  UPDATE

  I keep testing and if I remove the quotes from the filter and use a text without spacing it works

  ex :
  drawtext=text='test_message':fontfile=/path/arial.ttf:box=1:boxborderw=30:boxcolor=0xE86F67@0.7:fix_bounds=true:fontcolor=0x2A363B:fontsize=32:x=0:y=h

  so I believe there is something related to how android is escapes quotes and simple quotes because i compiled ffmpeg with same parameters and it runs on ubuntu with spaces at the text (just need to use simple quotes)

  does anyone know about it ?