diff --git a/src/gallium/frontends/va/picture.c b/src/gallium/frontends/va/picture.c
index 3dd7df0fa1f..9d0d705a711 100644
--- a/src/gallium/frontends/va/picture.c
+++ b/src/gallium/frontends/va/picture.c
@@ -407,7 +407,8 @@ handleVASliceDataBufferType(vlVaContext *context, vlVaBuffer *buf)
    enum pipe_video_format format = u_reduce_video_profile(context->templat.profile);
    static const uint8_t start_code_h264[] = { 0x00, 0x00, 0x01 };
    static const uint8_t start_code_h265[] = { 0x00, 0x00, 0x01 };
-   static const uint8_t start_code_vc1[] = { 0x00, 0x00, 0x01, 0x0d };
+   static const uint8_t start_code_vc1_frame[] = { 0x00, 0x00, 0x01, 0x0d };
+   static const uint8_t start_code_vc1_field[] = { 0x00, 0x00, 0x01, 0x0c };
    static const uint8_t eoi_jpeg[] = { 0xff, 0xd9 };
 
    if (!context->decoder)
@@ -441,14 +442,14 @@ handleVASliceDataBufferType(vlVaContext *context, vlVaBuffer *buf)
          context->bs.sizes[context->bs.num_buffers++] = sizeof(start_code_h265);
          break;
       case PIPE_VIDEO_FORMAT_VC1:
-         if (bufHasStartcode(buf, 0x0000010d, 32) ||
-             bufHasStartcode(buf, 0x0000010c, 32) ||
-             bufHasStartcode(buf, 0x0000010b, 32))
+         if (bufHasStartcode(buf, 0x000001, 24))
             break;
 
          if (context->decoder->profile == PIPE_VIDEO_PROFILE_VC1_ADVANCED) {
-            context->bs.buffers[context->bs.num_buffers] = (void *const)&start_code_vc1;
-            context->bs.sizes[context->bs.num_buffers++] = sizeof(start_code_vc1);
+            const uint8_t *start_code =
+               context->desc.vc1.is_first_field ? start_code_vc1_frame : start_code_vc1_field;
+            context->bs.buffers[context->bs.num_buffers] = (void *const)start_code;
+            context->bs.sizes[context->bs.num_buffers++] = sizeof(start_code_vc1_frame);
          }
          break;
       case PIPE_VIDEO_FORMAT_MPEG4:
diff --git a/src/gallium/frontends/va/picture_vc1.c b/src/gallium/frontends/va/picture_vc1.c
index 6ad1571ca96..15d0f4b564d 100644
--- a/src/gallium/frontends/va/picture_vc1.c
+++ b/src/gallium/frontends/va/picture_vc1.c
@@ -37,6 +37,7 @@ void vlVaHandlePictureParameterBufferVC1(vlVaDriver *drv, vlVaContext *context,
    vlVaGetReferenceFrame(drv, vc1->backward_reference_picture, &context->desc.vc1.ref[1]);
    context->desc.vc1.picture_type = vc1->picture_fields.bits.picture_type;
    context->desc.vc1.frame_coding_mode = vc1->picture_fields.bits.frame_coding_mode;
+   context->desc.vc1.is_first_field = vc1->picture_fields.bits.is_first_field;
    context->desc.vc1.postprocflag = vc1->post_processing != 0;
    context->desc.vc1.pulldown = vc1->sequence_fields.bits.pulldown;
    context->desc.vc1.interlace = vc1->sequence_fields.bits.interlace;
diff --git a/src/gallium/include/pipe/p_video_state.h b/src/gallium/include/pipe/p_video_state.h
index 05fdd3a2dbf..259410fe6ee 100644
--- a/src/gallium/include/pipe/p_video_state.h
+++ b/src/gallium/include/pipe/p_video_state.h
@@ -344,6 +344,7 @@ struct pipe_vc1_picture_desc
    uint32_t slice_count;
    uint8_t picture_type;
    uint8_t frame_coding_mode;
+   uint8_t is_first_field;
    uint8_t postprocflag;
    uint8_t pulldown;
    uint8_t interlace;