[FFmpeg-devel] Latest FFMPEG 0.9 Issues

Michael Niedermayer michaelni at gmx.at
Mon Mar 12 20:43:33 CET 2012


On Mon, Mar 12, 2012 at 09:44:59AM -0700, Aℓex Converse wrote:
> On Sun, Mar 11, 2012 at 9:25 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
> > On Sat, Dec 31, 2011 at 05:23:21PM +0100, Michael Niedermayer wrote:
> >> On Fri, Dec 30, 2011 at 09:52:21PM -0800, C Chatterjee wrote:
> >> >
> >> > Michael:
> >> >
> >> > Thanks for fixing the aacdec.c bug in item 1 below in an email sent by you earlier.
> >> >
> >> > On item 2 I believe that checking as below:
> >> >      else if (enc->codec_id == CODEC_ID_AAC && pkt->size > 2 &&
> >> >                 (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
> >> >          av_log(s, AV_LOG_ERROR, "malformated aac bitstream, use -absf aac_adtstoasc\n");
> >> >          return -1;
> >> > may not be necessary because the 2 byte header can be at the start of a payload too.
> >> > I have used this stream on a number of players - VLC, Flash and iPhone. All works.
> >> > Is there a case of a player where it does not work.
> >> > I comment out the lines above in flvenc.c and movenc.c and use ffmpeg as:
> >> >
> >> > ffmpeg -y -i xx.flv -acodec copy -vcodec -preset superfast -b:v 150k ff.flv
> >> > ff.flv works fine on all players I have used.
> >>
> >> hmm, maybe
> >> baptiste, mike or alex could comment on if this check is or is not
> >> required ?
> >
> 
> This can't be at the start of a non-ADTS payload. 111 is the
> EndOfFrame syntax element.

Thanks

also thanks to baptiste for the spec link

Ill revert it in a moment

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I have often repented speaking, but never of holding my tongue.
-- Xenocrates
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