[FFmpeg-user] libavcodec documentation and usage

[James Board]

>When you used "reply" to start an email to this list, your email client
>inserted codes for "In-Reply-To:" and "References:" that point to that
>email.  Changing the subject doesn't removes those codes.  So your email
>has codes that say that it belongs to the topic "how to debug when
>running ffplay", but you were talking about something else.

Okay.  Yes, I forgot what the mailing list email address was, so I
merely replied to an existing email and changed the subject line.  I had
always thought that was enough to start a new thread, but was wrong.  
I'll fix this in future emails.