> Try to download the clip's (german) audio stream: > > $ ffmpeg -i https://arte-cmafhls.akamaized.net/am/cmaf/135000/135400/135413-000-A/202610021782BBD7570B91283DB734361FE86CE9AE/medias/135413-000-A_aud_VA-ALL_2_43597289_8091428_20261002174735.m3u8 -c copy foo.mp4
If I download the complete m3u8 stream file and audio files with curl -Lv --remote-name-all https://arte-cmafhls.akamaized.net/am/cmaf/135000/135400/135413-000-A/202610021782BBD7570B91283DB734361FE86CE9AE/medias/135413-000-A_aud_VA-ALL_2_43597289_8091428_20261002174735.{m3u8,mp4} and start a local HTTP server that can serve byte ranges with "python -m RangeHTTPServer" in another terminal and then try ffmpeg -i http://localhost:8000/135413-000-A_aud_VA-ALL_2_43597289_8091428_20261002174735.m3u8 -c copy foo.mp4 ffmpeg version 9.0.2-3 Copyright (c) 2000-2026 the FFmpeg developers built with gcc 16 (Debian 16.2.0-3) configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-pocketsphinx --disable-libcaca --disable-libmfx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libdvdnav --enable-libdvdread --enable-libjack --enable-libjxl --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-librsvg --enable-shared libavutil 61. 1.102 / 61. 1.102 libavcodec 63. 1.102 / 63. 1.102 libavformat 63. 1.102 / 63. 1.102 libavdevice 63. 1.102 / 63. 1.102 libavfilter 12. 1.102 / 12. 1.102 libswscale 10. 1.102 / 10. 1.102 libswresample 7. 1.102 / 7. 1.102 [in#0 @ 0x557c8e015a80] Opening ' http://localhost:8000/135413-000-A_aud_VA-ALL_2_43597289_8091428_20261002174735.mp4' for reading Last message repeated 1 times Input #0, hls, from ' http://localhost:8000/135413-000-A_aud_VA-ALL_2_43597289_8091428_20261002174735.m3u8 ': Duration: 00:01:21.13, start: 0.000000, bitrate: 0 kb/s Program 0 Metadata: variant_bitrate : 0 Stream #0:0[0x0](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default) Metadata: variant_bitrate : 0 handler_name : SoundHandler compatible_brands: iso5iso6mp41 major_brand : iso5 minor_version : 512 encoder : Lavf59.5.100 Stream mapping: Stream #0:0 -> #0:0 (copy) Output #0, mp4, to 'foo.mp4': Metadata: encoder : Lavf63.1.102 Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default) Metadata: variant_bitrate : 0 handler_name : SoundHandler compatible_brands: iso5iso6mp41 major_brand : iso5 minor_version : 512 encoder : Lavf59.5.100 Press [q] to stop, [?] for help [out#0/mp4 @ 0x557c8e0534c0] video:0KiB audio:94KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 1.917726% size= 96KiB time=00:00:05.99 bitrate= 131.1kbits/s speed=3.69e+03x elapsed=0:00:00.00 Again, foo.mp4 is just 6 seconds long, so it's not some strange behaviour of ARTE's CDN servers.
