2017-10-31 23:47 GMT+08:00 Steven Liu <l...@chinaffmpeg.org>:
> when use frame_pts option, the output image name can be set with PTS
> of current frame.
>
> Signed-off-by: Steven Liu <l...@chinaffmpeg.org>
> ---
> doc/muxers.texi | 9 +++++++++
> libavformat/img2enc.c | 7 +++++++
> 2 files changed, 16 insertions(+)
>
> diff --git a/doc/muxers.texi b/doc/muxers.texi
> index 91bbe673c5..af5349e683 100644
> --- a/doc/muxers.texi
> +++ b/doc/muxers.texi
> @@ -894,9 +894,18 @@ can be used:
> ffmpeg -f v4l2 -r 1 -i /dev/video0 -f image2 -strftime 1
> "%Y-%m-%d_%H-%M-%S.jpg"
> @end example
>
> +You can set the file name with current frame's PTS:
> +@example
> +ffmpeg -f v4l2 -r 1 -i /dev/video0 -copyts -f image2 -frame_pts true %d.jpg"
> +@end example
> +
> @subsection Options
>
> @table @option
> +@item frame_pts
> +If set to 1, expand the filename with pts from pkt->pts.
> +Default value is 0.
> +
> @item start_number
> Start the sequence from the specified number. Default value is 1.
>
> diff --git a/libavformat/img2enc.c b/libavformat/img2enc.c
> index d793807b33..be87435b83 100644
> --- a/libavformat/img2enc.c
> +++ b/libavformat/img2enc.c
> @@ -42,6 +42,7 @@ typedef struct VideoMuxData {
> char target[4][1024];
> int update;
> int use_strftime;
> + int frame_pts;
> const char *muxer;
> int use_rename;
> } VideoMuxData;
> @@ -99,6 +100,11 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
> av_log(s, AV_LOG_ERROR, "Could not get frame filename with
> strftime\n");
> return AVERROR(EINVAL);
> }
> + } else if (img->frame_pts) {
> + if (av_get_frame_filename2(filename, sizeof(filename),
> img->path, pkt->pts, AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
> + av_log(s, AV_LOG_ERROR, "Cannot write filename by pts of the
> frames.");
> + return AVERROR(EINVAL);
> + }
> } else if (av_get_frame_filename2(filename, sizeof(filename),
> img->path,
> img->img_number,
> AV_FRAME_FILENAME_FLAGS_MULTIPLE)
> < 0 &&
> @@ -207,6 +213,7 @@ static const AVOption muxoptions[] = {
> { "update", "continuously overwrite one file", OFFSET(update),
> AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
> { "start_number", "set first number in the sequence",
> OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
> { "strftime", "use strftime for filename", OFFSET(use_strftime),
> AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
> + { "frame_pts", "use current frame pts for filename",
> OFFSET(frame_pts), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
> { "atomic_writing", "write files atomically (using temporary files and
> renames)", OFFSET(use_rename), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
> { NULL },
> };
> --
> 2.11.0 (Apple Git-81)
>
>
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
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