Thank you for your help! The fact is taht when using hardware encoder and you set mux rate to 20Mbit/s and video to 2Mbit/s the "space" between 2 Mbit and 20 Mbit/s will be filled with null packets, this is not in this case. Now I reduced Mux rate and it is not exceeded by the tests I did with TS reader. But still this encoder doesn't behave like a hardware one, but no problem. Please note, that I use this multicast stream for input into the hardware multiplexer.
The other problem that I have with the same video settings is when I add audio stream. When I add audio stream there are problems on sound all the time. If I use the same settings but without video input it works without a problem. The problem is only on hardware (all that I tested), it works on VLC with no problem. Here is commandline: f:/ffmpeg/bin/ffmpeg.exe -f dshow -video_size 720x576 -framerate 2 -pixel_format bgr24 -i video="VidBlaster VVD" -i udp://232.8.8.11:5002 -acodec mp2 -ar 48000 -b:a 192k -mpegts_service_id 0x002 -vcodec mpeg2video -b:v 500k -minrate:v 500k -maxrate:v 500k -bufsize:v 1024k -s: 720x576 -f mpegts -r 10 -g 30 -muxrate 1.5M -mpegts_pmt_start_pid 0x3E8 -mpegts_start_pid 0x3E9 -metadata service_name="POLANC TV INFO" -metadata service_provider="SVISLAR telekom d.o.o." udp:// 232.8.8.8:55002?pkt_size=188&buffer_size=6M 2015-01-15 13:17 GMT+01:00 Claudiu Rad-Lohanel <jazz...@misalpina.net>: > > On 1/15/2015 1:30 PM, Janez Miklavcic wrote: > >> f:/ffmpeg/bin/ffmpeg.exe -f dshow -video_size 720x576 -framerate 25 >> -pixel_format bgr24 -i video="VidBlaster VVD" -mpegts_service_id 0x002 >> -metadata service_name="POLANC TV INFO" -metadata >> service_provider="SVISLAR >> telekom d.o.o." -vcodec mpeg2video -b:v 2000k -minrate:v 2000k -maxrate:v >> 2000k -bufsize 200000k -q 3 -s: 720x576 -r 25 -g 50 -f mpegts >> -mpegts_pmt_start_pid 0x3E8 -mpegts_start_pid 0x3E9 -muxrate 20M udp:// >> 232.8.8.8:55002?pkt_size=188 >> > > what's this? what would you expect it to do if you tell it to go at 20Mbit? > > -muxrate 20M > > > >> Although bitrate is set to 2Mbit/s it jumps to 20 Mbit/s. >> >> Thnaks, >> Janez >> >> 2015-01-15 12:03 GMT+01:00 Roger Pack <rogerdpa...@gmail.com>: >> >> On 1/14/15, Janez Miklavcic <svisla...@gmail.com> wrote: >>> >>>> Dear All, >>>> >>>> I've been trying to achive constant video bitrate for mpeg-2 with >>>> >>> different >>> >>>> settings of ffmpeg (windows) but no success. >>>> The source was dshow. >>>> I've been testing video bitrate with TS reader. >>>> Can you tell me if video CBR in MPEG-2 is possible or not and if yes can >>>> you send me the settings. >>>> >>> uncut command line and console output of failing example please? >>> _______________________________________________ >>> ffmpeg-user mailing list >>> ffmpeg-user@ffmpeg.org >>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user >>> >>> _______________________________________________ >> ffmpeg-user mailing list >> ffmpeg-user@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user >> > > -- > jazzman > > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
