X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Ffile.c;h=08c7f8e6dd7c938341f111b50b31debe0dd84b8e;hb=00ed04d6149691a9abf486b2f88172fd6341d801;hp=e613b91010281862a9ece670aafd30f046830fd3;hpb=e4e04dce1fab81bcdef82e60184d50c73d212c6a;p=ffmpeg

diff --git a/libavformat/file.c b/libavformat/file.c
index e613b910102..08c7f8e6dd7 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -73,6 +73,7 @@ typedef struct FileContext {
     int trunc;
     int blocksize;
     int follow;
+    int seekable;
 #if HAVE_DIRENT_H
     DIR *dir;
 #endif
@@ -82,6 +83,7 @@ static const AVOption file_options[] = {
     { "truncate", "truncate existing files on write", offsetof(FileContext, trunc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
     { "blocksize", "set I/O operation maximum block size", offsetof(FileContext, blocksize), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
     { "follow", "Follow a file as it is being written", offsetof(FileContext, follow), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
+    { "seekable", "Sets if the file is seekable", offsetof(FileContext, seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 0, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
     { NULL }
 };
 
@@ -238,6 +240,9 @@ static int file_open(URLContext *h, const char *filename, int flags)
     if (!h->is_streamed && flags & AVIO_FLAG_WRITE)
         h->min_packet_size = h->max_packet_size = 262144;
 
+    if (c->seekable >= 0)
+        h->is_streamed = !c->seekable;
+
     return 0;
 }