Recherche avancée

Sur d’autres sites (6156)

• FFmpeg - invalid argument on a creation of MP4 with .SRT - "Unable to parse option value "Link_to_the.srt" as image size...?

  20 mai 2023, par sKunZel

  I'm stuck for 2 weeks on same problem on developping a command that bring together a .mp4 file consisting on a fixed image & audio from a .mp3 and then burnt-in subtitle from a stylized .srt into a new MP4.

  


  Here is my command :
 command = f"""ffmpeg -report -i "input_video_arg_abs" -vf "subtitles='input_srt_arg_abs':original_size=816x1456:force_style='FontName=Open Sans Italic,FontSize=13,MarginR=10,MarginV=149'" -c:v libx264 -crf 18 -c:a copy -movflags +faststart "output_video" """

  


  And you can see here the main script definitions of variables and call to fonction :

  


  


  input_srt = os.path.normpath(os.path.join(input_directory, srt_file))
print(f"Chemin du fichier SRT : input_srt")
reformat_srt(input_srt)
final_video_output=os.path.normpath(os.path.join(output_directory,
os.path.splitext(mp3_file)[0] + '.mp4'))
time.sleep(0.5)
create_final_video(temp_video_output, input_srt, final_video_output)

  


  


  This code generated an output file correctly named but 0 Ko. Every log i found indicated an error in the way of my .srt but when i print my input_srt it is correct.

  


  Here i add up some logs :

  


  [h264 @ 000002806874c340] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 2
[Parsed_subtitles_0 @ 0000028068d97d00] Setting 'filename' to value 'E'
[Parsed_subtitles_0 @ 0000028068d97d00] Setting 'original_size' to value 'YouTubeMcKennaWe_Plants_Are_Happy_PlantsSRTSans_programmation_paralleleinputTerence_McKenna_The_Good_the_True_and_the_Beautiful.srt'
[subtitles @ 0000028068f0de40] Unable to parse option value "YouTubeMcKennaWe_Plants_Are_Happy_PlantsSRTSans_programmation_paralleleinputTerence_McKenna_The_Good_the_True_and_the_Beautiful.srt" as image size
[Parsed_subtitles_0 @ 0000028068d97d00] Setting 'original_size' to value '816x1456'
[Parsed_subtitles_0 @ 0000028068d97d00] Setting 'force_style' to value 'FontName=Open Sans Italic,FontSize=13,MarginR=10,MarginV=149'
[Parsed_subtitles_0 @ 0000028068d97d00] Raster: FreeType 2.10.2
[Parsed_subtitles_0 @ 0000028068d97d00] Shaper: FriBidi 1.0.9 (SIMPLE)
[Parsed_subtitles_0 @ 0000028068d97d00] Initialized
[NULL @ 0000028068f0f480] Opening 'E' for reading
[file @ 000002806bf2b800] Setting default whitelist 'file,crypto'
[Parsed_subtitles_0 @ 0000028068d97d00] Unable to open E
[AVFilterGraph @ 0000028069044cc0] Error initializing filter 'subtitles' with args 'E:\YouTube\McKenna\We_Plants_Are_Happy_Plants\SRT\Sans_programmation_parallele\input\Terence_McKenna_The_Good_the_True_and_the_Beautiful.srt:original_size=816x1456:force_style=FontName=Open Sans Italic,FontSize=13,MarginR=10,MarginV=149'
Error reinitializing filters!
Failed to inject frame into filter network: No such file or directory
Error while processing the decoded data for stream #0:0
[AVIOContext @ 0000028068bbab80] Statistics: 0 seeks, 0 writeouts
[AVIOContext @ 0000028068693640] Statistics: 1370703 bytes read, 0 seeks
Conversion failed!


  


  I'm thinking of "E :" as the problem since on Windows it should be correct but with FFMPEG langage, i don't know...

  


  I wish anyone can help me, and will be glad if it is a tricky solution. Else, sorry for my newbism...
Thanks
sKunZel

  


• Is there a way to cut movement "dead air" on a screen recording ? [closed]

  16 mai 2023, par Raelbe

  I have got a couple of screen recordings of a painting I've done, and I've managed to concat the files together.

  


  Unfortunately, there is a lot of "dead air" in the video (where I have left my desk, so there is no movement happening on screen) is there a way to cut out this down time ?

  


  I found an example that another artist uses for his screen recordings, so I plugged it in with my file directory's. This is what I used :

  


  .\ffmpeg -f concat -safe 0 -i "merge.txt" -vf npdecimate=hi=64*12:lo=64*5:frac=0.33,seipts=N/30/TB,"setpts=0.25*PTS" -r 30 -crf 30 -an Illu_Test.mp4


  


  I got this error message at the end :

  


  [AVFilterGraph @ 000001cadfe5b1c0] No option name near 'N/30/TB'
[AVFilterGraph @ 000001cadfe5b1c0] Error parsing a filter description around: ,setpts=0.25*PTS
[AVFilterGraph @ 000001cadfe5b1c0] Error parsing filterchain 'npdecimate=hi=64*12:lo=64*5:frac=0.33,seipts=N/30/TB,setpts=0.25*PTS' around: ,setpts=0.25*PTS
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0`


  


  So I chopped it up a bit and this is what I used to concat the files and it worked perfectly.

  


  .\ffmpeg -f concat -safe 0 -i "merge.txt" -crf 30 -an Illu_Test.mp4


  


  Now, I'm looking to cut out the seconds of no movement. I'm unsure what the -crf command does (as stated I am brand new to this) OG artist states that :

  


  "This is the tolerance level that determines whether there has been enough change between frames or not to be considered as detected motion."

  


  Any help would be appreciated.

  


  (Apologies if the format of this question is wrong)

  


• ffmpeg : "Impossible to convert between the formats" when using NVIDIA GPU hardware acceleration

  24 mai 2021, par MorenoGentili

  I'm using ffmpeg from the command line on Windows 10 and I wanted to gave GPU acceleration a try to improve execution times. A simple cut command like this works fine and its execution time is reduced by 60-70%. Awesome.

  


  ffmpeg -hwaccel cuvid -c:v h264_cuvid -ss 00:00:10 -i in.mp4 -c:v h264_nvenc out.mp4


  


  Now I tried to use the -filter_complex flag to overlay, fade and translate a png image over a video. The working non-GPU enhanced command is this one :

  


  ffmpeg -i in.mp4 -loop 1 -t 75 -i overlay.png -filter_complex "[1:v]fade=t=in:st=30:d=0.3:alpha=1,fade=t=out:st=35.7:d=0.3:alpha=1[png1];[0:v][png1]overlay=x='if(gte(t,30), (t-30)*10, NAN)'" -movflags +faststart out.mp4


  


  Then, I added the GPU-related flags to the command like this.

  


  ffmpeg -hwaccel cuvid -c:v h264_cuvid -i in.mp4 -loop 1 -t 75 -i overlay.png -filter_complex "[1:v]fade=t=in:st=30:d=0.3:alpha=1,fade=t=out:st=35.7:d=0.3:alpha=1[png1];[0:v][png1]overlay=x='if(gte(t,30), 60-tanh((t-30)*30/5)*60, NAN)'" -movflags +faststart -c:v h264_nvenc out.mp4


  


  But it won't work. I get this error.

  


  Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:0


  


  I don't even know what it means. Can I actually run ANY ffmpeg command on the GPU with GPU acceleration ? I've found some information about the hwupload_cuda flag but I'm not sure if I should use it and how. My attempts have failed so far.

  


  Any advice on how I should modify the command to make it work on the GPU ?