diff options
Diffstat (limited to 'fftools/ffmpeg_opt.c')
| -rw-r--r-- | fftools/ffmpeg_opt.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index 58ec13e5a8..c44ed63730 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -900,13 +900,14 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic) static void assert_file_overwrite(const char *filename) { + const char *proto_name = avio_find_protocol_name(filename); + if (file_overwrite && no_file_overwrite) { fprintf(stderr, "Error, both -y and -n supplied. Exiting.\n"); exit_program(1); } if (!file_overwrite) { - const char *proto_name = avio_find_protocol_name(filename); if (proto_name && !strcmp(proto_name, "file") && avio_check(filename, 0) == 0) { if (stdin_interaction && !no_file_overwrite) { fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename); @@ -925,6 +926,19 @@ static void assert_file_overwrite(const char *filename) } } } + + if (proto_name && !strcmp(proto_name, "file")) { + for (int i = 0; i < nb_input_files; i++) { + InputFile *file = input_files[i]; + if (file->ctx->iformat->flags & AVFMT_NOFILE) + continue; + if (!strcmp(filename, file->ctx->url)) { + av_log(NULL, AV_LOG_FATAL, "Output %s same as Input #%d - exiting\n", filename, i); + av_log(NULL, AV_LOG_WARNING, "FFmpeg cannot edit existing files in-place.\n"); + exit_program(1); + } + } + } } static void dump_attachment(AVStream *st, const char *filename) |