examples/remux.py failed on Mac

[b04505009]

Overview

Example remux.py failed

Expected behavior

Got remuxed video

Actual behavior

Traceback:

  File "/Users/xizhen.liu/Downloads/test2.py", line 10, in <module>
    out_stream = output.add_stream(template=in_stream)
  File "av/container/output.pyx", line 47, in av.container.output.OutputContainer.add_stream
TypeError: add_stream() takes at least 1 positional argument (0 given)

Investigation

I tried using add_stream_from_template(). It runs successfully but the output video is not playable

• PyAV runtime:

python3 -m av --version
PyAV v14.0.1
library configuration: --disable-static --enable-shared --libdir=/tmp/vendor/lib --prefix=/tmp/vendor --disable-alsa --disable-doc --disable-libtheora --disable-libfreetype --disable-libfontconfig --disable-libbluray --disable-libopenjpeg --disable-mediafoundation --enable-gmp --disable-gnutls --enable-libaom --enable-libdav1d --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libspeex --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwebp --disable-libxcb --enable-libxml2 --enable-lzma --enable-zlib --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libx265 --enable-gpl --enable-videotoolbox --extra-ldflags='-Wl,-ld_classic'
library license: GPL version 3 or later
libavcodec     61. 19.100
libavdevice    61.  3.100
libavfilter    10.  4.100
libavformat    61.  7.100
libavutil      59. 39.100
libswresample   5.  3.100
libswscale      8.  3.100

I have done the following:

• Checked the PyAV documentation
• Searched on Google
• Searched on Stack Overflow

[edziegle]

Looks like this was fixed d527571. The Cookbook doc is still out of date though https://pyav.basswood-io.com/docs/stable/cookbook/basics.html#remuxing

[b04505009]

I tried add_stream_from_template as well, but the output video contains no valid stream

[b04505009]

13.1.0 works fine. I believe there are issues with the latest release 14.0.1

[karoldob]

I have similar observations. I have identical issue when remuxing video+audio streams, but currently cannot provide more details. When remuxing video only - all is ok.
And 14.1.0 is also affected (in my case)