segafilm: Fix potential division by 0 on corrupted segafilm streams in the demuxer.

[ffmpeg] / libavformat / movenc.c

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 5d676f77410f86c12d4675c365d7bc397b98a2f0..b1dafdb7fa8c5e879fd1e068b8fb3fd891fe6c1f 100644 (file)
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -208,7 +208,7 @@ static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
     avio_wb32(pb, 11);
     ffio_wfourcc(pb, "dac3");
 
-    init_get_bits(&gbc, track->vosData+4, track->vosLen-4);
+    init_get_bits(&gbc, track->vosData+4, (track->vosLen-4) * 8);
     fscod      = get_bits(&gbc, 2);
     frmsizecod = get_bits(&gbc, 6);
     bsid       = get_bits(&gbc, 5);
@@ -2356,7 +2356,11 @@ AVOutputFormat ff_mov_muxer = {
     .extensions        = "mov",
     .priv_data_size    = sizeof(MOVMuxContext),
     .audio_codec       = CODEC_ID_AAC,
+#if CONFIG_LIBX264_ENCODER
+    .video_codec       = CODEC_ID_H264,
+#else
     .video_codec       = CODEC_ID_MPEG4,
+#endif
     .write_header      = mov_write_header,
     .write_packet      = ff_mov_write_packet,
     .write_trailer     = mov_write_trailer,
@@ -2389,7 +2393,11 @@ AVOutputFormat ff_mp4_muxer = {
     .extensions        = "mp4",
     .priv_data_size    = sizeof(MOVMuxContext),
     .audio_codec       = CODEC_ID_AAC,
+#if CONFIG_LIBX264_ENCODER
+    .video_codec       = CODEC_ID_H264,
+#else
     .video_codec       = CODEC_ID_MPEG4,
+#endif
     .write_header      = mov_write_header,
     .write_packet      = ff_mov_write_packet,
     .write_trailer     = mov_write_trailer,
@@ -2405,7 +2413,11 @@ AVOutputFormat ff_psp_muxer = {
     .extensions        = "mp4,psp",
     .priv_data_size    = sizeof(MOVMuxContext),
     .audio_codec       = CODEC_ID_AAC,
+#if CONFIG_LIBX264_ENCODER
+    .video_codec       = CODEC_ID_H264,
+#else
     .video_codec       = CODEC_ID_MPEG4,
+#endif
     .write_header      = mov_write_header,
     .write_packet      = ff_mov_write_packet,
     .write_trailer     = mov_write_trailer,