HTTP Live Streaming: AAC to TS and segmenting with ffmpeg

[certuna]

I've been trying to do something what seems very simple: prepare an audio stream for HTTP Live Streaming. This means muxing the audio into a TS container and breaking it up into 10s segments. Now ffmpeg claims to do this: https://www.ffmpeg.org/ffmpeg-formats.html#hls but when I try it with

ffmpeg -i test.m4a -hls_time 10 test.m3u8

I get:

[hls @ 0x7fa46c00b200] Frame rate very high for a muxer not efficiently supporting it.
Please consider specifying a lower framerate, a different muxer or -vsync 2
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x7fa46b815800] using SAR=1/1
[libx264 @ 0x7fa46b815800] MB rate (32490000) > level limit (2073600)
[libx264 @ 0x7fa46b815800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x7fa46b815800] profile High 4:4:4 Predictive, level 5.2, 4:4:4 8-bit
[aac @ 0x7fa46b816a00] The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.

Can anyone replicate this bug, or am I doing something wrong? It seems to go for libx264 which is strange since there is no video stream at all.

[aazerty]

Hi certuna ,

Not easy to solve your ask .

After many tries , what i can say , is to
_ write "-hls_list_size 30" ( in my try i had 29 streams .ts )
_ BEFORE -hls_time 10

================
"ffmpeg.exe" -i "O_Holy_Night.mp3" -hls_list_size 30 -hls_time 10  "O_Holy_Night.m3u8"

Input #0, mp3, from 'O_Holy_Night.mp3':
Output #0, hls, to 'O_Holy_Night.m3u8':

Stream mapping:
  Stream #0:0 -> #0:0 (mp3 -> mp2)

size=N/A time=00:04:50.67 bitrate=N/A
=================
=================
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXTINF:10,
O_Holy_Night0.ts
...
#EXTINF:10,
O_Holy_Night28.ts
#EXTINF:1,
O_Holy_Night29.ts
#EXT-X-ENDLIST
=================

Some instructions don't work (???) in
https://www.ffmpeg.org/ffmpeg-formats.html#hls

Note : While playing the file ( in VLC) the 'progress bar' is staying at 0 !!! .

Some times the file .m3u8 is unable to be deleted !!!
Do < Ctrl Alt Del> => 'Task Manager' stop the process 'vlc.exe' (running) .

Regards .