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avformat/img2enc: use unmatched filename for an invalid or missing sequence pattern

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Also warn the user that for single images -update should be used, for sequences
a proper pattern should be specified.

Fixes ticket #9748.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2022-06-13 00:36:56 +02:00
parent 3f2de562c3
commit b54f3e32fa
1 changed files with 11 additions and 7 deletions
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18
libavformat/img2enc.c
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@ -163,13 +163,17 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
}
} else if (av_get_frame_filename2(filename, sizeof(filename), s->url,
img->img_number,
AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0 &&
img->img_number > img->start_img_number) {
av_log(s, AV_LOG_ERROR,
"Could not get frame filename number %d from pattern '%s'. "
"Use '-frames:v 1' for a single image, or '-update' option, or use a pattern such as %%03d within the filename.\n",
img->img_number, s->url);
return AVERROR(EINVAL);
AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
if (img->img_number == img->start_img_number) {
av_log(s, AV_LOG_WARNING, "The specified filename '%s' does not contain an image sequence pattern or a pattern is invalid.\n", s->url);
av_log(s, AV_LOG_WARNING,
"Use a pattern such as %%03d for an image sequence or "
"use the -update option (with -frames:v 1 if needed) to write a single image.\n");
av_strlcpy(filename, s->url, sizeof(filename));
} else {
av_log(s, AV_LOG_ERROR, "Cannot write more than one file with the same name. Are you missing the -update option or a sequence pattern?\n");
return AVERROR(EINVAL);
}
}
for (i = 0; i < 4; i++) {
av_dict_copy(&options, img->protocol_opts, 0);