[FFmpeg-trac] #4594(undetermined:new): Files created are the same size regardless of quality settings
FFmpeg
trac at avcodec.org
Fri Jun 5 23:32:46 CEST 2015
#4594: Files created are the same size regardless of quality settings
-------------------------------------+-------------------------------------
Reporter: illumilore | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
When running"
~/src/ffmpeg/ffmpeg -f pulse -i default -f video4linux2 -input_format
mjpeg -s 960x720 -r 5 -i /dev/video0 -acodec vorbis -vcodec libx264
-preset ultrafast -tune zerolatency -map 0:a -map 1:v
http://127.0.0.1:8090/cam.ffm -f segment -segment_time 3600
-segment_atclocktime 1 -reset_timestamps 1 -vcodec libx264 -r 5 -s 960x720
-crf 40 -tune zerolatency -strict -2 -vf
"drawtext='fontfile=/usr/share/fonts/truetype/DejaVuSans.ttf:fontcolor=white:fontsize=30:x=1:y=2:shadowx=1:shadowy=1:text=%{localtime\:%Y-%m-%d
%H\\\\\:%M\\\\\:%S}'" -strftime 1 -acodec copy
"/media/cam/%Y-%m-%d_%H-%M.mkv"
that will create files that are 650MB, while using -crf 32 will also
create files that are 650MB,even though the former is lower quality and
should create much smaller files.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4594>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list