diff options
| -rw-r--r-- | doc/ffmpeg.texi | 16 | ||||
| -rw-r--r-- | fftools/ffmpeg_opt.c | 7 |
2 files changed, 14 insertions, 9 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 20a547381c..164419cad3 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -1620,23 +1620,25 @@ It is useful for when flow speed of output packets is important, such as live st Read input at native frame rate. This is equivalent to setting @code{-readrate 1}. @item -vsync @var{parameter} Video sync method. -For compatibility reasons old values can be specified as numbers. -Newly added values will have to be specified as strings always. + +For compatibility reasons some of the values can be specified as numbers (shown +in parentheses in the following table). This is deprecated and will stop working +in the future. @table @option -@item 0, passthrough +@item passthrough (0) Each frame is passed with its timestamp from the demuxer to the muxer. -@item 1, cfr +@item cfr (1) Frames will be duplicated and dropped to achieve exactly the requested constant frame rate. -@item 2, vfr +@item vfr (2) Frames are passed through with their timestamp or dropped so as to prevent 2 frames from having the same timestamp. @item drop As passthrough but destroys all timestamps, making the muxer generate fresh timestamps based on frame-rate. -@item -1, auto -Chooses between 1 and 2 depending on muxer capabilities. This is the +@item auto (-1) +Chooses between cfr and vfr depending on muxer capabilities. This is the default method. @end table diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index d478008866..42a65830a2 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -1731,7 +1731,7 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, in if ((frame_rate || max_frame_rate) && video_sync_method == VSYNC_PASSTHROUGH) - av_log(NULL, AV_LOG_ERROR, "Using -vsync 0 and -r/-fpsmax can produce invalid output files\n"); + av_log(NULL, AV_LOG_ERROR, "Using -vsync passthrough and -r/-fpsmax can produce invalid output files\n"); MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st); if (frame_aspect_ratio) { @@ -3191,8 +3191,11 @@ static int opt_vsync(void *optctx, const char *opt, const char *arg) else if (!av_strcasecmp(arg, "passthrough")) video_sync_method = VSYNC_PASSTHROUGH; else if (!av_strcasecmp(arg, "drop")) video_sync_method = VSYNC_DROP; - if (video_sync_method == VSYNC_AUTO) + if (video_sync_method == VSYNC_AUTO) { video_sync_method = parse_number_or_die("vsync", arg, OPT_INT, VSYNC_AUTO, VSYNC_VFR); + av_log(NULL, AV_LOG_WARNING, "Passing a number to -vsync is deprecated," + " use a string argument as described in the manual.\n"); + } return 0; } |