Re: ?ly2video - create videos from your LilyPond projects

[FireTight]

Peter Chubb-4 wrote:
> 
>>>>>> "FireTight" == FireTight  <address@hidden> writes:
> 
> FireTight> Hello, my name is Jiri "FireTight" Szabo and I would like
> FireTight> to introduce program ly2video to you. This program can
> FireTight> generate videos from your LilyPond projects that contains
> FireTight> moving music staff, which is synchronized to music (
> FireTight>
> http://www.youtube.com/playlist?list=PL444F0513202699C4&feature=view_all
> FireTight> examples ). If you are interested, you can download it
> FireTight>
> http://code.google.com/p/ly2video/downloads/detail?name=ly2video_v1.0.zip
> FireTight> here . I hope you will enjoy it! :)
> 
> Thanks --- this is pretty awesome.
> 
> I had to change it a bit to get it to work on linux (patch appended).
> 
> It'd be neat if this could work with articulate a bit better --- to
> expand trills and turns for example, and better handle appogiaturas.
> 
> I found that music with many acciaccaturas caused the timing to get a
> bit out --- the video started to lag further and further behind, until
> it caught up at the end.
> 
> BTW these changes are just a hack, except for the call to
> subprocess.check_call, which is needed --- the real fix would be
> to build the filenames using the system path separator.
> 
> Also it'd be nice if the downloadable zip file unpacked into its own
> directory so it created a single directory full of stuff rather than
> several and a file or two.
> 
> --- ly2video/ly2video.py        2012-05-21 09:29:36.000000000 +1000
> +++ ly2video-new/ly2video.py    2012-06-07 19:53:42.082361794 +1000
> @@ -501,7 +501,7 @@
>                          frame.putpixel(((resolution[0] / 2) + 1, pixel),
> color)
>  
>                      # save that frame
> -                    frame.save(".\\notes\\frame" + str(frameNum) +
> ".png")
> +                    frame.save("./notes/frame" + str(frameNum) + ".png")
>                      frameNum += 1
>  
>          sys.stderr.write("SYNC: Generating frames for page "
> @@ -932,8 +932,7 @@
>  
>      # call TiMidity++ to convert MIDI (ly2videoConvert.wav)
>      try:
> -        subprocess.call(winTimidity + "timidity ly2videoConvert.midi
> -Ow",
> -                        stderr=subprocess.STDOUT) 
> +        subprocess.check_call([winTimidity + "timidity",
> "ly2videoConvert.midi", "-Ow"])
>      except subprocess.CalledProcessError as err:
>          sys.stderr.write("ERROR:\n")
>          sys.stderr.write("> TiMidity++: There has been some error.\n")
> @@ -956,7 +955,7 @@
>      # call FFmpeg (without title)
>      if not useTitle:
>          if os.system(winFfmpeg + "ffmpeg -f image2 -r " + str(fps)
> -                     + " -i .\\notes\\frame%d.png -i ly2videoConvert.wav
> "
> +                     + " -i ./notes/frame%d.png -i ly2videoConvert.wav "
>                       + output) != 0:
>              sys.stderr.write("ERROR: Calling FFmpeg has failed.\n")
>              return 13
> @@ -965,13 +964,13 @@
>          # create video with title
>          silentAudio = generateSilence(titleLength)
>          if os.system(winFfmpeg + "ffmpeg -f image2 -r " + str(fps)
> -                     + " -i .\\title\\frame%d.png -i "
> +                     + " -i ./title/frame%d.png -i "
>                       + silentAudio + " -same_quant title.mpg") != 0:
>              sys.stderr.write("ERROR: Calling FFmpeg has failed.\n")
>              return 14
>          # generate video with notes
>          if os.system(winFfmpeg + "ffmpeg -f image2 -r " + str(fps)
> -                     + " -i .\\notes\\frame%d.png -i ly2videoConvert.wav
> "
> +                     + " -i ./notes/frame%d.png -i ly2videoConvert.wav "
>                       + "-same_quant notes.mpg") != 0:
>              sys.stderr.write("ERROR: Calling FFmpeg has failed.\n")
> 
> _______________________________________________
> lilypond-user mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/lilypond-user
> 
> 

Yeah, I know about that path separator problem, I forgot that Linux uses
different character then Windows... :/ Sorry about that.

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