#8000: cache protocol unable to create temp files on windows 10 -------------------------------------+------------------------------------- Reporter: | Type: defect andrewkpearce | Status: new | Priority: important Component: ffmpeg | Version: | unspecified Keywords: Windows 10 | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: when adding cache: in front of the URI, ffmpeg reports "failed to create tempfile". How to reproduce: Call avformat_open_input with cache: in front of the media URI 73 static int cache_open(URLContext *h, const char *arg, int flags, AVDictionary **options) 74 { 75 char *buffername; 76 Context *c= h->priv_data; 77 78 av_strstart(arg, "cache:", &arg); 79 80 c->fd = avpriv_tempfile("ffcache", &buffername, 0, h); 81 if (c->fd < 0){ 82 av_log(h, AV_LOG_ERROR, "Failed to create tempfile\n"); 83 return c->fd; 84 } 85 86 unlink(buffername); 87 av_freep(&buffername); 88 89 return ffurl_open_whitelist(&c->inner, arg, flags, &h->interrupt_callback, 90 options, h->protocol_whitelist, h->protocol_blacklist, h); 91 } FFmpeg output is: FFmpeg (Error): [cache @ 0000021577e3d5c0] [TEMPFILE @ 00000092687fdd70] ff_tempfile: Cannot open temporary file ./ffcache1Apgjk FFmpeg (Error): [cache @ 0000021577e3d700] [TEMPFILE @ 00000092660fe2e0] ff_tempfile: Cannot open temporary file ./ffcacheBoLLC0 FFmpeg (Error): [cache @ 0000021577e3d700] Failed to create tempfile FFmpeg (Error): [cache @ 0000021577e3d5c0] Failed to create tempfile -- Ticket URL: <https://trac.ffmpeg.org/ticket/8000> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker