[x264-devel] Forbidden bit

[Kieran Kunhya]

----- Original Message -----

From: Darren Longhorn <darren.longhorn at redembedded.com>
To: x264-devel at videolan.org
Cc: 
Sent: Wednesday, 27 July 2011, 14:13
Subject: [x264-devel] Forbidden bit

Hi,

firstly, not sure if this is the correct mailing list so please feel
free to redirect me.

Am trying to play some content encoded using x264 with the H.264
Baseline Profile Decoder
on C64x+. There are artifacts in the decoded output and the decoder is
reporting "NALU syntax forbidden bit is not zero".

The content has been encoded using x264 core:116 r2037 f8ebd4a via
ffmpeg version N-31647-gc617d7b. The command line is:
ffmpeg -i VIDEO0002.3gp -vcodec libx264 -vpre normal -vpre baseline
-level 3.0  -r 25 -vb 750k -s 720x576 -acodec libfaac -ar 16000 -ab
96000 -ac 1  VIDEO0002.avi

Does anyone know why this bit is set? As far as I was aware, it shoudl
always be set to 0?

Best regards

Darren
_______________________________________________


If you post a sample I can check it in a stream analyzer. libx264 produces valid NALUs so it's probably ffmpeg
mangling them somewhere.