ffmpeg forgets to set AVFormatParameters::pix_fmt when capturing from a

v4l card.
In other words, if you type ffmpeg -pix_fmt yuv422 -s 352x288 test.avi
the "-pix_fmt yuv422" option will have no effect.

Patch by Luca Abeni *** lucabe72 !a! email ! it ***

Originally committed as revision 4899 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -3581,6 +3581,7 @@ static void prepare_grab(void)
         vp->device  = video_device;
         vp->channel = video_channel;
         vp->standard = video_standard;
+        vp->pix_fmt = frame_pix_fmt;
         if (av_open_input_file(&ic, "", fmt1, 0, vp) < 0) {
             fprintf(stderr, "Could not find video grab device\n");
             exit(1);