> -----Original Message----- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > Paul B Mahol > Sent: 15 September 2015 12:46 > To: FFmpeg user questions > Subject: Re: [FFmpeg-user] ffmpeg serving to Avisynth > > On 9/15/15, Francois Visagie <francois.visa...@gmail.com> wrote: > >> -----Original Message----- > >> From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf > >> Of Frank Tetzel > >> Sent: 14 September 2015 21:40 > >> To: ffmpeg-user@ffmpeg.org > >> Subject: Re: [FFmpeg-user] ffmpeg serving to Avisynth > >> > >> > > What processing do you want to do with ffmpeg? > >> > > >> > At a minimum I foresee concatenating input files with it. My > >> > current project has 350+ video files. Avisynth cannot work with > >> > more than 25 > >> > - 35 without crashing. I have not found an Avisynth mechanism for > >> > concatenating files that preserves audio. > >> > >> There are multiple ways to concatenate files depending on the input > >> codecs and what other processing you want to do with it [4]. Not sure > >> if it handles hundreds of input files well enough. > >> > >> > > And why do you want to > >> > > send it over tcp, if that's what TCPSource reads (not an avisynth > >> > > user)? > >> > > >> > To avoid intermediate storage. Workspace for this project is 2TB. > >> > Each additional version of the project is currently ~700GB. Some > >> > form of inter-process communication is required to avoid > >> > intermediate storage. TCPSource() seems the only type of built-in > >> > IPC input Avisynth supports. > >> > >> I don't know which data layout they expect in TCPSource and if it is > >> in any way compatible with the tcp output protocol in ffmpeg, or any > >> other protocol. I know this was your question in the first place but > >> i can't help you there. You could play around and just try to connect > >> [1][2]. > > > > On the premise that Avisynth would expect similar input via > > TCPSource() than it produces via frame-serving, I noted its video and > > audio formats when serving to ffmpeg and specified those codecs for > > the most likely-looking protocol, tcp. > > > > Then came the issue of which format to specify for the tcp protocol. > > ffmpeg reports Avisynth's input format as 'avisynth', which the former > > does not support as an output format. I tried a couple of > > likely-looking candidates, mostly the 'raw' ones. With some, e.g. > > 'rawvideo': > > > > ffmpeg -y -i 00000.MTS -c:v rawvideo -c:a pcm_s16le -f rawvideo > > tcp://127.0.0.1:22050?listen > > How is rawvideo format supposed to handle audio frames?
Not, granted. Although rawvideo was simply the one picked (not very cleverly) for the example. > > > > > ffmpeg and Avisynth would connect and ffmpeg would in fact start serving. > > After a short while, however, Avisynth would crash out and ffmpeg > > would terminate with > > > > av_interleaved_write_frame(): Unknown error > > > > This seems to indicate at least format incompatibility, and perhaps > > initial connection set-up also. > > > >> > >> There's also some avisynth support in ffmpeg [3]. As i never used it > >> i don't know about its capabilities. > >> > >> What are you doing after processing with avisynth? Do you pipe it > >> back into ffmpeg for encoding? Can't you use built-in filters [5] > >> instead of an avisynth script? > >> > >> > >> [1] http://avisynth.nl/index.php/TCPServer > >> [2] http://ffmpeg.org/ffmpeg-protocols.html#tcp > >> [3] > >> http://www.ffmpeg.org/faq.html#How-can-I-read-DirectShow-files_003f > >> [4] http://trac.ffmpeg.org/wiki/Concatenate > >> [5] http://ffmpeg.org/ffmpeg-filters.html#Description > >> _______________________________________________ > >> 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 > > > _______________________________________________ > 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