Re: aspect ratio info lost after padding

On Mon, 24 Apr 2006 15:39:16 -0400, T wrote:

> hi
> 
> I noticed that the movie aspect ratio info is lost after applying padding
> (after image zooming). 
> 
> Good case:
> 
> ffmpeg -i "bob1.avi" -target pal-dvd   -s 352x256 -aspect 4:3 -vframes 30 
> "bob1.mpg"
> 
> $ mpginfo bob1.mpg 
>   Mpeg 2 Program Stream File [Video]
>   Muxrate : 10.08 Mbps
>   Estimated Duration: 06:14.10s
>   Aspect ratio 4/3 (TV)
>   Not interlaced, chroma format: 4:2:0
>   Size [352 x 256]     25.00 fps    9.00 Mbps
> 
> aspect ratio is 4/3. 
> 
> Nok case:
> 
> ffmpeg -i "bob1.avi" -target pal-dvd   -s 352x256 -aspect 4:3 -padtop 16 
> -padbottom 16 -aspect 4:3 -vframes 30 "bob1.mpg"
> 
> $ mpginfo bob1.mpg 
> warning: couldn't find any valid system header. I'm continuing anyway
> bob1.mpg
>   Mpeg 2 Program Stream File [Video]
>   Muxrate : 10.08 Mbps
>   Estimated Duration: 06:14.10s
>   Aspect ratio 1/1 (VGA)
>   Not interlaced, chroma format: 4:2:0
>   Size [352 x 288]     25.00 fps    9.00 Mbps
> 
> See, aspect ratio changed to 1/1. The only difference between previous cmd
> and this one is that paddings are added. 
> 
> Please comfirm/help. 
> 
> thanks
> 
> tong
> 
> PS. I'm using the last ffmpeg from cvs.

This looks very much like a bug to me. Shall I report it?