>>>Thanks for your reply :-) I didn't know that the mailing list is not that active.
This project misses of a leader since the actual leader have left the project for personal reason and found nobody to replace him. It is damage because this project is great and powerful. The roadmap is rich and the 1.2.0 alpha1 is very interesting and promising. However, this project have a lack of a good and a modern documentation with a lot of practice samples. So the command line could be awful with so much options and lost the user and the software engineer. Even the new of the output of the last version (1.17) is not updated on the blog/official website.And I don't speak how to have the last version on the official website :-( A lot of things should be done before to restart on good news bases. The fact that 's an open source project do that he could live again easily with a motivated team. I am quiet sure that it could restart quickly. Nothing is lost. Crossed fingers. >>< -R n[,f1[,f2]] 0 Constant bitrate (CBR) encoding. [default] Ahah. You have yourself the answer at your question. You don't need to precise CBR because this value is by default. It is only useful when you are using two pass by sample. >>>"-o test" indicates the output file name, right? That I have already included. I don't care about the output file format, it could be any format which the other computer (client) can play, and no worries about the quality as well. Okay. Here how I see things : In one pass for sample using ffmpeg, (you could use xvid too for the same result) : transcode -i Blood_Diamond.avi -o Blood_Diamond_Mod.avi -y ffmpeg, ffmpeg -F mpeg4 -w 5000 -N0X55 -E 44100,16,2 I explain : -i Blood_Diamond.avi # the input file -o Blood_Diamond_Mod.avi # the output file -y ffmpeg, ffmpeg # utilisation of ffmpeg for video and for audio (I am not sure that the second is needed obligatory) -F mpeg4 # utilisation of codec mpeg4 of ffmpeg=> divx or xvid ? -w 5000 # specification of a bitrate of 5000 -NOX55 # specification of output audio in MP3 -E 44100,16,2 # samplerate at 44100, 16 bits, 2 channels (stereo). If you'd like the same change by -E 0,0,2 or 0,0,1 (for mono) In two pass and you 'll understand better how to use the R options (to my humble advice, I' m just an user) : transcode -i Blood_Diamond.avi -o /dev/null -y ffmpeg,null -F mpeg4 -w 5000 -R 1 transcode -i Blood_Diamond -o Blood_Diamond_Mod.avi -y ffmpeg,ffmpeg -F mpeg4 -w 5000 -N0X55 -E 44100,16,2 -R 2 Here you have moreover : -R 1 # first pass -R 2 # second pass -o /dev/null # for the first pass a tempory output Note : we don't matter about audio in the first pass so it why we don't specify a audio codec in -y ffmpeg,null If you have some errors running this command (the first or the both), could you please put the output of the terminal. Thanks. Hopes this helps you. 2012/4/15 Mohit Dhingra <mohitdhing...@gmail.com> > Thanks for your reply :-) I didn't know that the mailing list is not that > active. > > About Input file: > > > --------------------------------------------------------------------------------------------------------------------------- > cadlab:/srv/streaming # tcprobe -i Blood_Diamond.avi > [tcprobe] RIFF data, AVI video > [tcprobe] summary for Blood_Diamond.avi, (*) = not default, 0 = not > detected > import frame size: -g 720x416 [720x576] (*) > frame rate: -f 25.000 [25.000] frc=3 > audio track: -a 0 [0] -e 48000,0,2 [48000,16,2] -n 0x55 [0x2000] > (*) > bitrate=122 > kbps > > length: 206153 frames, frame_time=40 msec, > duration=2:17:26.119 > > ------------------------------------------------------------------------------------------------------------------------- > > So, As I told you, I want lots of constant bit rate streams (starting from > 1 Mbps to 100 Mbps, 5000 was just an example to test, but it doesn't seem > to produce constant bit rate, that's why I posted. ) > > I used "-R 0" because man page says > > -R n[,f1[,f2]] > 0 Constant bitrate (CBR) encoding. [default] > The codec tries to achieve constant bitrate output. This > means, each encoded frame is mostly the same size. This type of encoding > can help in maintaining constant filling of hardware buffer on set top > players or smooth streaming over networks. By the way, Constant bitrate is > often obtained sacrifying quality during high motion scenes. > > "-o test" indicates the output file name, right? That I have already > included. > > So, basically I want to upscale the video (by padding bits or stuff like > that) and I want to stream over the network. I don't care about the output > file format, it could be any format which the other computer (client) can > play, and no worries about the quality as well. If there is something I am > misinterpreting, please let me know, I would like to clarify as well. > > > * > ---------------------------- > Thanks & Regards > Mohit Dhingra > * > > > On 15 April 2012 01:32, eolin...@gmail.com <eolin...@gmail.com> wrote: > >> And you don't speak about audio ? Did you have one and in which format >> will be in the output file ? >> >> 2012/4/14 eolin...@gmail.com <eolin...@gmail.com> >> >> Hi Mohit, >>> >>> Be patient this mailing list is not very active . :-( >>> >>> Could you give us more explanations on your input file ? >>> tcprobe -i Blood_Diamond.avi >>> >>> I don't know if it is a translation error of my part but I don't >>> understand what do you like to obtain. what/where is your output file and >>> his format ? Why do you use a bitrate of 5000 if you want to have a 100 >>> mbps ? Why do you use the option R 0 ? one pass or more ? >>> >> >> Regards. >>> >>> @+ >>> >>> >>> 2012/4/14 Mohit Dhingra <mohitdhing...@gmail.com> >>> >>>> This is for the experimental purpose, I am not worried about the video >>>> quality. I just want to convert the video to 100 Mbps, so that I can stream >>>> it and test the system performance. Any inputs please.. >>>> >>>> * >>>> ---------------------------- >>>> Thanks & Regards >>>> Mohit Dhingra >>>> * >>>> >>>> >>>> On 13 April 2012 23:33, Mohit Dhingra <mohitdhing...@gmail.com> wrote: >>>> >>>>> *Hello All,* >>>>> >>>>> I need to generate constant bit rate stream, starting from 1 Mbps to >>>>> 100 Mbps bit rate. I tried using transcode for the same: >>>>> >>>>> transcode -i Blood_Diamond.avi -w 5000,15 -o test -y ffmpeg -F mpeg4 >>>>> -R 0 >>>>> >>>>> But, it doesn't generate constant bit rate stream. What are the >>>>> options that I am missing? Thanks in advance! >>>>> >>>>> * >>>>> ---------------------------- >>>>> Thanks & Regards >>>>> Mohit Dhingra >>>>> * >>>>> >>>> >>>> >>> >>> >>> -- >>> Olivier >>> Cenwen un elfe sur la banquise/ an elve on the ice >>> Mon blog perso sur le multimédia, Ubuntu, Linux et OpenShot : >>> http://linuxevolution.wordpress.com/ >>> Le forum d'Openshot où vous me trouverez : http://openshotusers.com/ >>> http://openshotusers.com/forum/index.php >>> Nothing is lost until the last second. >>> The family motto : When we want, we can. >>> Astuces, Actualités, Logiciels, bref sur tout ce que je ne fais >>> d'articles dessus >>> Google+<https://plus.google.com/u/0/111472725110173916234/posts> >>> >>> >> >> >> -- >> Olivier >> Cenwen un elfe sur la banquise/ an elve on the ice >> Mon blog perso sur le multimédia, Ubuntu, Linux et OpenShot : >> http://linuxevolution.wordpress.com/ >> Le forum d'Openshot où vous me trouverez : http://openshotusers.com/ >> http://openshotusers.com/forum/index.php >> Nothing is lost until the last second. >> The family motto : When we want, we can. >> Astuces, Actualités, Logiciels, bref sur tout ce que je ne fais >> d'articles dessus >> Google+<https://plus.google.com/u/0/111472725110173916234/posts> >> >> > -- Olivier Cenwen un elfe sur la banquise/ an elve on the ice Mon blog perso sur le multimédia, Ubuntu, Linux et OpenShot : http://linuxevolution.wordpress.com/ Le forum d'Openshot où vous me trouverez : http://openshotusers.com/ http://openshotusers.com/forum/index.php Nothing is lost until the last second. The family motto : When we want, we can. Astuces, Actualités, Logiciels, bref sur tout ce que je ne fais d'articles dessus Google+ <https://plus.google.com/u/0/111472725110173916234/posts>
