[Ffmpeg-devel] bug report: ffmpeg converting error - AVI to MP4

[Michael Niedermayer]

Hi

On Mon, Feb 19, 2007 at 08:31:34AM +0200, Kostya wrote:
> On Sun, Feb 18, 2007 at 11:06:20AM -0800, Jimmy wrote:
> > Hello.
> > 
> > I am trying convert from AVI to MP4.
> > The codecs I use for AVI are:
> >     - video: PicVideo M-JPEG
> >     - audio: PCM 44.1kHz, 16 bit, stereo
> > 
> > The convertion process goes smoothly for a while and at a point ffmpeg starts returning alot of errors.
> > The most common is "[mjpeg @ 0x840fbc0]Subsampling in JPEG-LS is not supported."
> > >From the time the error occurs the resulted MP4 has white image frames.
> > I am recording with iuVCR v. 4.7.4.293.
> 
> This codec violates JFIF format.
> 
> Those pictures which are almost correct are missing huffman table 0x00
> (ancient FFmpeg build 4747 handles them correctly, new FFmpeg and
> libjpeg-based programs could not handle them at all).

does 4747 work and 4748 fail?
and yes picvideo mjpeg should be supported, no matter if they violate the
standards or not

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

Why not whip the teacher when the pupil misbehaves? -- Diogenes of Sinope
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