On 2024-04-29 23:53 +0200, Alexander Strasser via ffmpeg-devel wrote: > When piping ffmpeg into ffplay both programs write a status line in > the terminal. That causes flickering and invisibility of one or the > other status line. > > As compromise set ffplay log level to warning, so it doesn't show > the status line. > > The user is usually testing ffmpeg command lines and want's a > preview of the result. This way the user can see the ffmpeg output > and still see errors and warnings from ffplay, should they occur. > > Additionally set PTS to zero in ffplay to lessen the delay until > the frames are displayed. Without it delay is quite observable > when e.g. live capturing with low frame rates. > --- > > Same as previous patch, but with setpts=0 in ffplay as suggested by > Nicolas George. > > > libavdevice/opengl_enc.c | 2 +- > libavdevice/sdl2.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/libavdevice/opengl_enc.c b/libavdevice/opengl_enc.c > index 6f7a30ff9e..93d3959880 100644 > --- a/libavdevice/opengl_enc.c > +++ b/libavdevice/opengl_enc.c > @@ -1067,7 +1067,7 @@ static av_cold int opengl_write_header(AVFormatContext > *h) > av_log(opengl, AV_LOG_WARNING, > "The opengl output device is deprecated due to being > fundamentally incompatible with libavformat API. " > "For monitoring purposes in ffmpeg you can output to a file or > use pipes and a video player.\n" > - "Example: ffmpeg -i INPUT -f nut -c:v rawvideo - | ffplay -\n" > + "Example: ffmpeg -i INPUT -f nut -c:v rawvideo - | ffplay > -loglevel warning -vf setpts=0 -\n" > ); > opengl->warned = 1; > } > diff --git a/libavdevice/sdl2.c b/libavdevice/sdl2.c > index 779c8e08b0..491c8dafe8 100644 > --- a/libavdevice/sdl2.c > +++ b/libavdevice/sdl2.c > @@ -167,7 +167,7 @@ static int sdl2_write_header(AVFormatContext *s) > av_log(sdl, AV_LOG_WARNING, > "The sdl output device is deprecated due to being fundamentally > incompatible with libavformat API. " > "For monitoring purposes in ffmpeg you can output to a file or > use pipes and a video player.\n" > - "Example: ffmpeg -i INPUT -f nut -c:v rawvideo - | ffplay -\n" > + "Example: ffmpeg -i INPUT -f nut -c:v rawvideo - | ffplay > -loglevel warning -vf setpts=0 -\n" > ); > sdl->warned = 1; > } > --
Will try to push soon'ish if I don't hear any objections. Alexander _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
