MPEG DASH ffprobe produces "Invalid return value 0 for stream protocol"

[vectronic]

Summary of the bug:

ffprobe is unable to parse some MPEG DASH packages which are accessed over HTTP, the same packages parse fine when accessed via local filesystem.

Host the attached HLS package on a local web server and access it:

% ffprobe -i http://127.0.0.1/master.mpd

Errors such as "Invalid return value 0 for stream protocol" are produced.

ffprobe version N-94896-ga8b98479d2

I will submit a patch to fix this.

[vectronic]

Here is a hosted example:

ffprobe -i http://vectronic.io/dash_http_issue/master.mpd

[vectronic]

Patch for this:

​https://patchwork.ffmpeg.org/patch/15062/

[Balling]

So what is the proble with this patch that is one liner ​https://github.com/FFmpeg/FFmpeg/blob/f39678b3a99eb8f1503aed9fa26f3ef117d174e7/libavformat/dashdec.c#L602 ?