avcodec/ituh263dec: detect and warn about RTP

Fixes Ticket925 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago · f55a7ba037
parent 5c6a58746b
commit f55a7ba037
1 changed files with 4 additions and 0 deletions
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@ -874,6 +874,10 @@ int ff_h263_decode_picture_header(MpegEncContext *s)

    align_get_bits(&s->gb);

+    if (show_bits(&s->gb, 2) == 2 && s->avctx->frame_number == 0) {
+         av_log(s->avctx, AV_LOG_WARNING, "Header looks like RTP instead of H.263\n");
+    }
+
    startcode= get_bits(&s->gb, 22-8);

    for(i= get_bits_left(&s->gb); i>24; i-=8) {