Sur d’autres sites (13679)

• How to Extract Lyrics (USLT frame) from Mp3 using FFmpeg ?

  1er mai 2022, par Wonderer

  I'm using Mp3tag's "Tools" feature to batch run FFmpeg in Windows, in order to batch extract the embedded lyrics content (USLT frame of ID3v2 tag) from MP3 files, I know with FFmpeg I can do something like :

  


  -i "%_path%" -f ffmetadata "%_folderpath%\%_filename%.txt"


  


  "%_path%" = full path of the MP3 file

  


  "%_folderpath%%_filename%.txt" = path and filename of the exported txt file.

  


  The command above extracts all the metadata from MP3 file and export them into a txt file with the following cotent for example :

  


  ;FFMETADATA1
album=name of the album
artist=name of the artist
title=name of the title
lyrics-eng=[00:01.23]line1 of lyrics
\
[00:04.56]line2 of lyrics
\
[00:07.89]line3 of lyrics
\
[01:03.12]3rd last line of lyrics
\
[02:04.34]2nd last line of lyrics
\
[03:05.67]Last line of lyrics
\

date=2020
encoder=Lavf59.23.100


  


  (the original lyrics uses Simple LRC format with timestamps in each line, certain lines contain only the timestamp with empty lyrics)

  


  (There might (or might not) be additional metadata (e.g. date and encoder in the example above) following the lyrics part)

  


  As seen above, the backslash "\" (which is not present in the original lyrics) is somehow added after each line of lyrics, between CR (CarriageReturn) and LF (LineFeed) as seen in Notepad++ (the original lyrics use CRLF as EOL characters).

  


  So how do I modify the given command line to export only the lyrics part (exluding all other metadata and the extra backslash "\"), an example of the expected text file content is shown below :

  


  [00:01.23]line1 of lyrics
[00:04.56]line2 of lyrics
[00:07.89]line3 of lyrics
[01:03.12]3rd last line of lyrics
[02:04.34]2nd last line of lyrics
[03:05.67]Last line of lyrics


  


  with the original EOL characters from lyrics such as CRLF

  


• ffmpeg closes with operation not permitted in android

  27 avril 2022, par DevSharma

  I am running FFmpeg in my app and specifically in "Android 11" I am getting this error from several users

  


  I have researched a lot but no solution found.

  


  I thought there is something wrong with the codec parameter that is being passed since it is saying "incorrect codec parameters" but most of the parameters looks good.

  


  also verified if all the required file permission are granted and those are good too

  


  now I m unable to find the problem,

  


  please help, thanks

  


  Command:&#xA;/data/app/~~hyrHVcslcfdQcguX0rauRA==/<apppackage>-QbDCul7FXU4tVniSDeP1Sg==/lib/arm64/libffmpeg.so -i /storage/emulated/0/Android/media/com.whatsapp/WhatsApp/Media/WhatsApp Video/VID-20220414-WA0010.mp4 -c:v libx264 -crf 23 -map 0:V -map 0:a? -map 0:s? -c:s mov_text -segment_time 26 -g 26 -sc_threshold 0 -force_key_frames expr:gte(t,n_forced*26) -reset_timestamps 1 -f segment -preset ultrafast /storage/emulated/0/Movies/splitVideoFolder/split_video%03d.mp4&#xA;&#xA;Error:&#xA;ffmpeg version v4.4-dev-416 Copyright (c) 2000-2020 the FFmpeg developers&#xA;  built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)&#xA;  configuration: --cross-prefix=aarch64-linux-android- --sysroot=/Users/admin/AndroidStudioProjects/android-ndk-r21d/toolchains/llvm/prebuilt/darwin-x86_64/sysroot --prefix=/Users/admin/AndroidStudioProjects/Tanner/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/local/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android21-clang --cxx=aarch64-linux-android21-clang&#x2B;&#x2B; --extra-libs=&#x27;-L/Users/admin/AndroidStudioProjects/Tanner/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat&#x27; --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-shared --disable-ffplay --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --enable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libass --enable-iconv --enable-libx264 --enable-gpl --disable-sdl2 --enable-zlib --enable-mediacodec&#xA;  libavutil      56. 55.100 / 56. 55.100&#xA;  libavcodec     58. 96.100 / 58. 96.100&#xA;  libavformat    58. 48.100 / 58. 48.100&#xA;  libavdevice    58. 11.101 / 58. 11.101&#xA;  libavfilter     7. 87.100 /  7. 87.100&#xA;  libswscale      5.  8.100 /  5.  8.100&#xA;  libswresample   3.  8.100 /  3.  8.100&#xA;Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/storage/emulated/0/Android/media/com.whatsapp/WhatsApp/Media/WhatsApp Video/VID-20220414-WA0010.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 0&#xA;    compatible_brands: mp42isom&#xA;  Duration: 00:01:30.53, start: 0.000000, bitrate: 671 kb/s&#xA;    Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/smpte170m), 576x1024 [SAR 1:1 DAR 9:16], 539 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)&#xA;    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))&#xA;  Stream #0:1 -> #0:1 (aac (native) -> aac (native))&#xA;Press [q] to stop, [?] for help&#xA;[libx264 @ 0xb400007727c64800] using SAR=1/1&#xA;[libx264 @ 0xb400007727c64800] using cpu capabilities: ARMv8 NEON&#xA;[libx264 @ 0xb400007727c64800] profile Constrained Baseline, level 3.1, 4:2:0, 8-bit&#xA;[libx264 @ 0xb400007727c64800] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=26 keyint_min=2 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0&#xA;[segment @ 0xb400007727c28800] Opening &#x27;/storage/emulated/0/Movies/splitVideoFolder/split_video000.mp4&#x27; for writing&#xA;[segment @ 0xb400007727c28800] Failed to open segment &#x27;/storage/emulated/0/Movies/splitVideoFolder/split_video000.mp4&#x27;&#xA;Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted&#xA;Error initializing output stream 0:0 --&#xA;[aac @ 0xb400007727c65700] Qavg: 18220.703&#xA;[aac @ 0xb400007727c65700] 2 frames left in the queue on closing&#xA;Conversion failed!&#xA;</apppackage>

  


• How to deinterlace and encode with hevc_nvenc(10bit) using ffmpeg

  25 juin 2020, par acklack

  I am trying to deinterlace a mpeg2ts video and encode it with hevc_nvenc(10bit) by ffmpeg, but it does not work.

  


  Please tell me how to solve it.

  


  ffmpeg

  


  $ ffmpeg
ffmpeg version N-98246-g157feea Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix= --pkg-config-flags=--static --extra-cflags=-I/include 
--extra-ldflags=-L/lib --extra-libs='-lpthread -lm' --bindir=/bin --enable-gpl 
--enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-static --enable-cuda 
--enable-cuvid --enable-nvenc --enable-cuda-sdk --enable-libnpp 
--extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --enable-nonfree


  


  Failure

  


  #1 (-deint)

  


  

  • Success:deinterlacing, Failure : 10bit

  


  


  ffmpeg -y -hide_banner -fflags +discardcorrupt \
    -hwaccel cuda -c:v mpeg2_cuvid -hwaccel_output_format cuda \
    -deint adaptive -drop_second_field 1 \
    -i in.m2ts \
    -c:v hevc_h265 -pixel_format nv12 -profile:v main10 -level:v 4.1 -preset slow \
    -c:a copy -bsf:a aac_adtstoasc \
    out.mp4


  


  #2 (-deint)

  


  

  • Success:10bit, Failure:deinterlacing

  


  


  ffmpeg -y -hide_banner -fflags +discardcorrupt \
    -deint adaptive -drop_second_field 1 \
    -i in.m2ts \
    -c:v hevc_h265 -pix_fmt yuv420p10le -profile:v main10 -level:v 4.1 -preset slow \
    -c:a copy -bsf:a aac_adtstoasc \
    out.mp4


  


  #3 (yadif_cuda)

  


  

  • Success:deinterlacing, Failure : 10bit

  


  


  ffmpeg -y -hide_banner -fflags +discardcorrupt \
    -hwaccel cuda -c:v mpeg2_cuvid -hwaccel_output_format cuda \
    -i in.m2ts \
    -vf "yadif_cuda" \
    -c:v hevc_h265 -pixel_format nv12 -profile:v main -level:v 4.1 -preset slow \
    -c:a copy -bsf:a aac_adtstoasc \
    out.mp4