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| author | Anton Khirnov <anton@khirnov.net> | 2022-12-10 09:45:50 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2023-01-10 11:49:28 +0100 |
| commit | 260f3918937463f1b90e1b77cba80b917f3cb8c1 (patch) | |
| tree | 27667ff7aa2c447d4dd5e3609196b50f4abe2e5d /fftools/ffmpeg_mux_init.c | |
| parent | e884360e913a08c085ae29ffc1461a2bb205d550 (diff) | |
| download | ffmpeg-260f3918937463f1b90e1b77cba80b917f3cb8c1.tar.gz | |
fftools/ffmpeg: always generate CFR output when -r is used
Current code may, depending on the muxer, decide to use VSYNC_VFR tagged
with the specified framerate, without actually performing framerate
conversion. This is clearly wrong and against the documentation, which
states unambiguously that -r should produce CFR output for video
encoding.
FATE test changes:
* nuv-rtjpeg: replace -r with '-enc_time_base -1', which keeps the
original timebase. Output frames are now produced with proper
durations.
* filter-mpdecimate: just drop the -r option, it is unnecessary
* filter-fps-r: remove, this test makes no sense and actually
produces broken VFR output (with incorrect frame durations).
Diffstat (limited to 'fftools/ffmpeg_mux_init.c')
| -rw-r--r-- | fftools/ffmpeg_mux_init.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/fftools/ffmpeg_mux_init.c b/fftools/ffmpeg_mux_init.c index 0280759b05..9eea8639dc 100644 --- a/fftools/ffmpeg_mux_init.c +++ b/fftools/ffmpeg_mux_init.c @@ -443,10 +443,6 @@ static OutputStream *new_video_stream(Muxer *mux, const OptionsContext *o, Input exit_program(1); } - if ((frame_rate || max_frame_rate) && - video_sync_method == VSYNC_PASSTHROUGH) - 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) { AVRational q; @@ -614,8 +610,18 @@ static OutputStream *new_video_stream(Muxer *mux, const OptionsContext *o, Input if (fps_mode) parse_and_set_vsync(fps_mode, &ost->vsync_method, ost->file_index, ost->index, 0); + if ((ost->frame_rate.num || ost->max_frame_rate.num) && + !(ost->vsync_method == VSYNC_AUTO || + ost->vsync_method == VSYNC_CFR || ost->vsync_method == VSYNC_VSCFR)) { + av_log(NULL, AV_LOG_FATAL, "One of -r/-fpsmax was specified " + "together a non-CFR -vsync/-fps_mode. This is contradictory.\n"); + exit_program(1); + } + if (ost->vsync_method == VSYNC_AUTO) { - if (!strcmp(oc->oformat->name, "avi")) { + if (ost->frame_rate.num || ost->max_frame_rate.num) { + ost->vsync_method = VSYNC_CFR; + } else if (!strcmp(oc->oformat->name, "avi")) { ost->vsync_method = VSYNC_VFR; } else { ost->vsync_method = (oc->oformat->flags & AVFMT_VARIABLE_FPS) ? |