[Ffmpeg-devel] [PATCH] Specify file format in vhook watermark

[Víctor Paesa]

Hi,

There has been some reports about images wrongly identified as MP3
by file probing in vhook watermark.

To deal with that, the attached patch allows to specify explicitely
the file format as part of the vhook watermark invocation.

Test A:
Before patch GIF is identified as MP3:

ffmpeg -i input.avi -vhook
'watermark.dll -f logo_watermark_full_layer.gif -m 0 -t ffffff' out.avi

You get these errors:
[mp3 @ 0x974054]Could not find codec parameters (Audio: mp1, 160 kb/s)
get_watermark_picture() Failed to find stream info
Failed to Configure /usr/local/bin/vhook/watermark.dll
Failed to add video hook function: watermark.dll -f
logo_watermark_full_layer.gif -m 0 -t ffffff


Test B:
After patch you may specify the container format (image2 for GIF)
and no errors occur:

ffmpeg -i input.avi -vhook
'watermark.dll -F image2 -f logo_watermark_full_layer.gif -m 0 -t ffffff' \
out.avi

The logo GIF is at
http://lists.mplayerhq.hu/pipermail/ffmpeg-user/attachments/20061202/2a24b695/logo_watermark_full_layer.gif

Regards,
V?ctor