Icecast - May 2020 - can't stream Opus in CAF format

Using FFmpeg, I can stream to a file on disk okay:
    c:\apps\ffmpeg\bin\ffmpeg.exe -f dshow -i audio="Line In (Realtek
High Definition Audio)" -c:a libopus -ac 1 -b:a 32000 live.caf

But, if I add Icey metadata, FFmpeg throws errors: 
    c:\apps\ffmpeg\bin\ffmpeg.exe -f dshow -i audio="Line In (Realtek
High Definition Audio)" -c:a libopus -ac 1 -b:a 32000^
 -ice_name "live broadcast" -ice_description "desc"^
 -ice_genre "genre" -ice_url
"https://stream.example.org/live.caf"
-user_agent "agent" -content_type "audio/x-caf"^
 icecast://source:hackme at localhost:8000/live.caf 
[caf @ 00000204b419ac80] Muxing variable packet size not supported on
non seekable output
Could not write header for output file #0 (incorrect codec parameters
?): Invalid data found when processing input
Error initializing output stream 0:0 -- 

Any idea why the destination of Icecast makes a difference?  Is there
something I can adjust in Icecast to make it work? 

Justin
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Hi,

the CAF format is not stremable due to the way the format works.

On 14 May 2020, at 4:42, webmaster at berean-biblechurch.org wrote:
> Using FFmpeg, I can stream to a file on disk okay:
>     c:\apps\ffmpeg\bin\ffmpeg.exe -f dshow -i audio="Line In (Realtek
> High Definition Audio)" -c:a libopus -ac 1 -b:a 32000 live.caf
>
> But, if I add Icey metadata, FFmpeg throws errors:
>     c:\apps\ffmpeg\bin\ffmpeg.exe -f dshow -i audio="Line In (Realtek
> High Definition Audio)" -c:a libopus -ac 1 -b:a 32000^
>  -ice_name "live broadcast" -ice_description "desc"^
>  -ice_genre "genre" -ice_url
"https://stream.example.org/live.caf"
> -user_agent "agent" -content_type "audio/x-caf"^
>  icecast://source:hackme at localhost:8000/live.caf
> [caf @ 00000204b419ac80] Muxing variable packet size not supported on
> non seekable output
> Could not write header for output file #0 (incorrect codec parameters
> ?): Invalid data found when processing input
> Error initializing output stream 0:0 --
>
> Any idea why the destination of Icecast makes a difference?  Is there
> something I can adjust in Icecast to make it work?
>
> Justin_______________________________________________
> Icecast mailing list
> Icecast at xiph.org
> http://lists.xiph.org/mailman/listinfo/icecast

Thank you.

On 2020-05-14 01:06, Marvin Scholz wrote:
> Hi,
> 
> the CAF format is not stremable due to the way the format works.
> 
> On 14 May 2020, at 4:42, webmaster at berean-biblechurch.org wrote:
> 
>> Using FFmpeg, I can stream to a file on disk okay:
>>     c:\apps\ffmpeg\bin\ffmpeg.exe -f dshow -i audio="Line In
(Realtek
>> High Definition Audio)" -c:a libopus -ac 1 -b:a 32000 live.caf
>> 
>> But, if I add Icey metadata, FFmpeg throws errors:
>>     c:\apps\ffmpeg\bin\ffmpeg.exe -f dshow -i audio="Line In
(Realtek
>> High Definition Audio)" -c:a libopus -ac 1 -b:a 32000^
>>  -ice_name "live broadcast" -ice_description
"desc"^
>>  -ice_genre "genre" -ice_url
"https://stream.example.org/live.caf"
>> -user_agent "agent" -content_type "audio/x-caf"^
>>  icecast://source:hackme at localhost:8000/live.caf
>> [caf @ 00000204b419ac80] Muxing variable packet size not supported on
>> non seekable output
>> Could not write header for output file #0 (incorrect codec parameters
>> ?): Invalid data found when processing input
>> Error initializing output stream 0:0 --
>> 
>> Any idea why the destination of Icecast makes a difference?  Is there
>> something I can adjust in Icecast to make it work?
>> 
>> Justin_______________________________________________
>> Icecast mailing list
>> Icecast at xiph.org
>> http://lists.xiph.org/mailman/listinfo/icecast
> _______________________________________________
> Icecast mailing list
> Icecast at xiph.org
> http://lists.xiph.org/mailman/listinfo/icecast