#11527: When using tee to live stream to youtube - image that is streamed on
youtube changes aspect ratio
----------------------------------+--------------------------------------
Reporter: bojanv55 | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: git-master
Keywords: tee | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
----------------------------------+--------------------------------------
Summary of the bug:
When using tee to stream image+audio to youtube, image aspect ratio is
changed on youtube stream. If other tee destination fails during the
process, image ratio is OK. Also if I do not use tee, image aspect ratio
is normal. So it only happens when there are 2 destinations working and
only on youtube live stream (local file is OK).
How to reproduce:
{{{
This fails:
"C:\Users\default.DESKTOP-TKUK8H2\Downloads\ffmpeg-master-latest-win64
-gpl-shared\bin\ffmpeg.exe" -y -loop 1 -i "C:\Users\default.DESKTOP-
TKUK8H2\Documents\coverhd1p.png" -i "http://livestream.me:8010/livestream";
-c:v libx264 -preset ultrafast -pix_fmt yuv420p -minrate 6000k -maxrate
6000k -bufsize 12000k -b:v 6000k -r 30 -g 30 -keyint_min 60 -x264opts
keyint=60:min-keyint=60:no-scenecut -s 1280x720 -tune zerolatency -b:a
128k -c:a aac -ar 48000 -strict experimental -drop_pkts_on_overflow 1
-attempt_recovery 1 -recover_any_error 1 -recovery_wait_time 1 -map 0:v
-map 1:a -f tee
"[f=flv:select=\'a:0,v:0\']rtmp://a.rtmp.youtube.com/live2/mycode|[f=flv:select=\'a:0\']output1.flv"
This works:
"C:\Users\default.DESKTOP-TKUK8H2\Downloads\ffmpeg-master-latest-win64
-gpl-shared\bin\ffmpeg.exe" -y -loop 1 -i "C:\Users\default.DESKTOP-
TKUK8H2\Documents\coverhd1p.png" -i "http://livestream.me:8010/livestream";
-c:v libx264 -preset ultrafast -pix_fmt yuv420p -minrate 6000k -maxrate
6000k -bufsize 12000k -b:v 6000k -r 30 -g 30 -keyint_min 60 -x264opts
keyint=60:min-keyint=60:no-scenecut -s 1280x720 -tune zerolatency -b:a
128k -c:a aac -ar 48000 -strict experimental -drop_pkts_on_overflow 1
-attempt_recovery 1 -recover_any_error 1 -recovery_wait_time 1 -map 0:v
-map 1:a -f flv rtmp://a.rtmp.youtube.com/live2/mycode
}}}
[[Image(https://i.postimg.cc/262QsfHF/wrong-aspect-ratio.jpg)]]
{{{
C:\Users\default.DESKTOP-TKUK8H2>"C:\Users\default.DESKTOP-
TKUK8H2\Downloads\ffmpeg-master-latest-win64-gpl-shared\bin\ffmpeg.exe"
-version
ffmpeg version N-118905-gcbbc927a67-20250324 Copyright (c) 2000-2025 the
FFmpeg developers
built with gcc 14.2.0 (crosstool-NG 1.27.0.18_7458341)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-
config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64
--target-os=mingw32 --enable-gpl --enable-version3 --disable-debug
--enable-shared --disable-static --disable-w32threads --enable-pthreads
--enable-iconv --enable-zlib --enable-libfreetype --enable-libfribidi
--enable-gmp --enable-libxml2 --enable-lzma --enable-fontconfig --enable-
libharfbuzz --enable-libvorbis --enable-opencl --disable-libpulse
--enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-
libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint
--enable-libdav1d --enable-libdavs2 --enable-libdvdread --enable-libdvdnav
--disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r
--enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-
libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-
libopus --enable-librist --enable-libssh --enable-libtheora --enable-
libvpx --enable-libwebp --enable-libzmq --enable-lv2 --enable-libvpl
--enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-
librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-
libsnappy --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-
libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable-
libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo
--disable-libvvenc --enable-libx264 --enable-libx265 --enable-libxavs2
--enable-libxvid --enable-libzimg --enable-libzvbi --extra-
cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs=-lgomp --extra-
ldflags=-pthread --extra-ldexeflags= --cc=x86_64-w64-mingw32-gcc
--cxx=x86_64-w64-mingw32-g++ --ar=x86_64-w64-mingw32-gcc-ar
--ranlib=x86_64-w64-mingw32-gcc-ranlib --nm=x86_64-w64-mingw32-gcc-nm
--extra-version=20250324
libavutil 59. 60.100 / 59. 60.100
libavcodec 61. 33.102 / 61. 33.102
libavformat 61. 9.107 / 61. 9.107
libavdevice 61. 4.100 / 61. 4.100
libavfilter 10. 9.100 / 10. 9.100
libswscale 8. 13.103 / 8. 13.103
libswresample 5. 4.100 / 5. 4.100
libpostproc 58. 4.100 / 58. 4.100
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11527>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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