#11526: cmfv and cmfa not in hls allowed_extensions
----------------------------------+--------------------------------------
Reporter: gamer191 | Type: defect
Status: new | Priority: normal
Component: avformat | Version: git-master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
Cmfv and cmfa are not in ffmpeg's HLS demuxer's list of
allowed_extensions. This causes issues when downloading niconico videos
using yt-dlp.
This can be reproduced with `yt-dlp
"https://www.nicovideo.jp/watch/sm44612421"; --downloader ffmpeg` (the cmfa
issue can be reproduced using `yt-dlp
"https://www.nicovideo.jp/watch/sm44612421"; --downloader ffmpeg -f
bestaudio`). Alternatively, you can create a .m3u8 file containing
{{{
#EXTM3U
#EXT-X-TARGETDURATION:174
#EXTINF:135,
https://example.com/file.cmfv
}}}
and then run
{{{
% ffmpeg -i file.m3u8
ffmpeg version N-118897-gfc44ccd981-20250323 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
--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=20250323
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
[hls @ 00000257b8f1be40] URL https://example.com/file.cmfv is not in
allowed_extensions
[in#0 @ 00000257b8eb9f40] Error opening input: Invalid data found when
processing input
Error opening input file C:\Users\REDACTED\file.m3u8.
Error opening input files: Invalid data found when processing input
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11526>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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