diff -u ffmpeg.orig/ffmpeg.c ffmpeg/ffmpeg.c
--- ffmpeg.orig/ffmpeg.c	Mon Aug 13 17:24:19 2001
+++ ffmpeg/ffmpeg.c	Tue Oct 16 10:23:31 2001
@@ -210,7 +210,7 @@
     int frame_rate, sample_rate, channels;
     int width, height, frame_number, i, pix_fmt = 0;
     AVOutputStream *ost_table[s->nb_streams], *ost;
-    UINT8 *picture_in_buf = NULL, *picture_420p = NULL;
+    UINT8 *picture_in_buf = NULL, *picture_in_buf2=NULL, *picture_420p = NULL;
     int audio_fifo_size = 0, picture_size = 0;
     INT64 time_start;
 
@@ -339,6 +339,7 @@
             }
             picture_size = video_handle->packet_size;
             picture_in_buf = malloc(picture_size);
+            picture_in_buf2 = malloc(picture_size);
             if (!picture_in_buf)
                 goto fail;
             /* allocate a temporary picture if not grabbing in 420P format */
@@ -469,6 +470,7 @@
 
             if (pix_fmt != PIX_FMT_YUV420P) {
                 picture = &picture_tmp1;
+	        avpicture_fill(picture, picture_in_buf2, PIX_FMT_YUV420P, width, height);
                 img_convert(picture, PIX_FMT_YUV420P,
                             picture2, pix_fmt, 
                             width, height);