avformat/mp3enc: Avoid SEEK_END as it is unsupported

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
6 years ago · bf3ee6a130
parent 90db25a16e
commit bf3ee6a130
1 changed files with 2 additions and 1 deletions
--- a/libavformat/mp3enc.c
+++ b/libavformat/mp3enc.c
@ -391,6 +391,7 @@ static void mp3_update_xing(AVFormatContext *s)
    uint16_t tag_crc;
    uint8_t *toc;
    int i, rg_size;
+    int64_t old_pos = avio_tell(s->pb);

    /* replace "Xing" identification string with "Info" for CBR files. */
    if (!mp3->has_variable_bitrate)
@ -450,7 +451,7 @@ static void mp3_update_xing(AVFormatContext *s)

    avio_seek(s->pb,  mp3->xing_frame_offset, SEEK_SET);
    avio_write(s->pb, mp3->xing_frame, mp3->xing_frame_size);
-    avio_seek(s->pb, 0, SEEK_END);
+    avio_seek(s->pb, old_pos, SEEK_SET);
 }

 static int mp3_write_trailer(struct AVFormatContext *s)