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• ffmpeg.wasm DOMException : Failed to construct 'Worker' : Script at '/814.ffmpeg.js' cannot be accessed from origin ''

  18 mai 2024, par Quantum

  I have written a google chrome extension using local ffmpegwasm files (no need to run a server or download any ffmpegwasm files), which allows users to click an injected 'download' button under Reddit videos (via content_scripts). This was working great on ffmpegwasm v11, but since migrating to v12 (latest version) I have been unable to solve the following exception which is triggered during ffmpeg.load() : as seen in chrome's console log :

  


  DOMException: Failed to construct 'Worker': Script at 'https://www.redditstatic.com/814.ffmpeg.js' cannot be accessed from origin 'https://reddit.com'. At i.load (chrome-extension://ljejfmmefhnpbpdhkhbbajpihfhnbdnm/lib/ffmpeg/umd/ffmpeg.js:1:2918)


  


  I'm a programming beginner and I've been stuck trying to fix this for many, many hours. This exception does not happen and the video downloads if I instead use a feature of my extension which allows entering a Reddit video URL directly into a field in the extensions popup or options window. Also, I have no idea why the 814.ffmpeg.js file is being referenced along with redditstatic.com (from exception to exception, this url seems to randomly change to other reddit url's too), though I imagine this is part of the problem ?

  


  I have seen there are a couple of mentions of this error on the ffmpegwasm github repository, with some fixes involving using the worker814URL and/or classWorkerURL params within ffmpeg.load() and pointing them to the 814.ffmpeg.js file, which I have tried without any success (although I did notice that using classWorkerURL changed https://www.redditstatic.com/814.ffmpeg.js to chrome-extension://ljejfmmefhnpbpdhkhbbajpihfhnbdnm/lib/ffmpeg/umd/814.ffmpeg.js). Though, It seems that previous discussions around this error might not be too helpful for me as those appear geared towards ffmpegwasm running with a server, as apposed to entirely locally within a chrome extension.

  


  Any help would be super appreciated - many thanks

  


• ffmpeg filter complex maybe too long from my script

  8 novembre 2023, par iceget

  i am using ffmepg and filter complex to blend 2 png files for a exact time.
if i use a too long time (short commands working) then the output file has only 1kb and is not openable.

  


  i have added here my code was is not working, can anybody helps me ?

  


  i getting this back

  


  code :

  


  ffmpeg -loop 1 -t 0.2225 -i /tmp/a.png -loop 1 -t 0.2225 -i /tmp/b.png -s 640x480 -to 256 -c:v libx264 -pix_fmt yuv420p -filter_complex " \
[1:v][0:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b1v]; \
[0:v][1:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b2v]; \
[1:v][0:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b3v]; \
[0:v][1:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b4v]; \
[1:v][0:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b5v]; \
[0:v][1:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b6v]; \
[1:v][0:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b7v]; \
[0:v][1:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b8v]; \
[1:v][0:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b9v]; \
[0:v][1:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b10v]; \
[1:v][0:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b11v]; \
[0:v][1:v]blend=all_expr='A*(if(gte(T,0.2225),1,T/0.2225))+B*(1-(if(gte(T,0.2225),1,T/0.2225)))'[b12v]; \
...
[1:v][b988v][0:v][b989v][1:v][b990v][0:v][b991v][1:v][b992v][0:v][b993v][1:v][b994v][0:v][b995v][1:v][b996v][0:v][b997v][1:v][b998v][0:v][b999v][1:v][b1000v][0:v][b1001v][1:v][b1002v][0:v][b1003v][1:v][b1004v][0:v][b1005v][1:v][b1006v][0:v][b1007v][1:v][b1008v][0:v][b1009v][1:v][b1010v][0:v][b1011v][1:v][b1012v][0:v][b1013v][1:v][b1014v][0:v][b1015v][1:v][b1016v][0:v][b1017v][1:v][b1018v][0:v][b1019v][1:v][b1020v][0:v][b1021v][1:v][b1022v][0:v][b1023v][1:v][b1024v]
[0:v]concat=n=2049:v=1:a=0,format=yuv420p[v]" -map "[v]" /tmp/test.mp4


  


  the output is then this :

  


  ...
  Stream #1:0 (png) -> concat:in2038:v0
  Stream #1:0 (png) -> concat:in2042:v0
  Stream #1:0 (png) -> concat:in2046:v0
  format -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[libx264 @ 0x563a0f537380] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x563a0f537380] profile High, level 3.0
[libx264 @ 0x563a0f537380] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/tmp/test.mp4':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 640x480, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      encoder         : Lavc58.35.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Getötet   3 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x



  


  i create the filter complex by php with a for loop for creating the final syntax for ffmpeg.

  


  getting at the end of the command (debug log) :

  


  [auto_scaler_2044 @ 0x560f0db26c40] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2
[auto_scaler_2045 @ 0x560f144cf240] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2
[Parsed_blend_1022 @ 0x560f19f96d00] [framesync @ 0x560f19f96e08] Selected 1/25 time base
[Parsed_blend_1022 @ 0x560f19f96d00] [framesync @ 0x560f19f96e08] Sync level 2
[auto_scaler_3071 @ 0x560f18cf8a40] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2
[auto_scaler_2046 @ 0x560f0db27180] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2
[auto_scaler_2047 @ 0x560f144d00c0] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2
[Parsed_blend_1023 @ 0x560f19f97400] [framesync @ 0x560f19f97508] Selected 1/25 time base
[Parsed_blend_1023 @ 0x560f19f97400] [framesync @ 0x560f19f97508] Sync level 2
[auto_scaler_3072 @ 0x560f18cf90c0] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2
[scaler_out_0_0 @ 0x560f1a625140] w:640 h:480 fmt:yuv420p sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x4
[libx264 @ 0x560f19103180] using mv_range_thread = 40
[libx264 @ 0x560f19103180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x560f19103180] profile High, level 3.0
[libx264 @ 0x560f19103180] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/tmp/test.mp4':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0, 0, 1/12800: Video: h264 (libx264), 1 reference frame (avc1 / 0x31637661), yuv420p, 640x480, 0/1, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      encoder         : Lavc58.35.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Clipping frame in rate conversion by 0.000008
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x
cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x
cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x
Getötet


  


  is that the problem ?

  


  i have also tried with filter complex script, but the same error appears.

  


  thank you so much

  


  many greets iceget

  


  if i use a shorter time (about 10 seconds) then its working fine. but when i add 100 or 256 seconds, then i getting only a 1kb mp4 file.

  


  thank you

  


• How to Bulk Speed UP and Crop Videos FFMPEG

  6 septembre 2023, par Usemo Shank

  I have videos in (input) folder that is located on the root of the script, I also have output folder on the root, The input folder has several videos that i want to speed up in bulk by 1.1 percent, I also want to cropt the videos by 90 percent (Meaning 90 Percent of original video is visible).

  


  I have a code that does not function well. Here is the code I have

  


   import os
import subprocess

# Define input and output directories
input_folder = "input"
output_folder = "output"

# Create the output directory if it doesn't exist
if not os.path.exists(output_folder):
    os.makedirs(output_folder)

# List all video files in the input directory
input_files = [f for f in os.listdir(input_folder) if f.endswith(('.mp4', '.avi', '.mkv'))]

# Speed up and crop each video
for input_file in input_files:
    input_path = os.path.join(input_folder, input_file)
    output_file = os.path.splitext(input_file)[0] + "_speed_crop.mp4"
    output_path = os.path.join(output_folder, output_file)

    # FFmpeg command to speed up video by 1.1x and crop to 90%
    ffmpeg_command = [
        "ffmpeg",
        "-i", input_path,
        "-vf", "setpts=1.1*PTS,crop=in_w*0.9:in_h*0.9",
        "-c:v", "libx264",
        "-crf", "20",
        "-c:a", "aac",
        "-strict", "experimental",
        output_path
    ]

    # Run FFmpeg command
    subprocess.run(ffmpeg_command)

print("Conversion complete.")