Recherche avancée

Sur d’autres sites (10914)

• How to determine the proper HTML5 video codec attribute for an AV1 file based on the FFMpeg encoding command or output ?

  20 décembre 2020, par Slbox

  We have some files encoded in AV1, but we recently noticed that Chrome mobile fails to play the files - but it doesn't fall back to an encoding it can use - it just puts the unplayable AV1 file in there. I'm hoping that if we add a codec attribute we can remedy this - but I'm not sure how to determine the codec for these AV1 files.

  


  I've come across this documentation on MDN, but I'm not sure how I would determine the proper codec from that. It starts off simple enough, but some of the values further down, I have no idea what the right value would be.

  


  Opening the file in VLC player only shows this very limited information about the codec :

  


  

  


  The output of MediaInfo is :

  


  General
Complete name                            : demo-av1.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/mp41)
File size                                : 291 KiB
Duration                                 : 1 min 40 s
Overall bit rate                         : 23.7 kb/s
Writing application                      : Lavf58.43.100

Video
ID                                       : 1
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : High@L3.0
Codec ID                                 : av01
Duration                                 : 1 min 40 s
Bit rate                                 : 22.9 kb/s
Width                                    : 984 pixels
Height                                   : 670 pixels
Display aspect ratio                     : 3:2
Frame rate mode                          : Constant / Constant
Frame rate                               : 24.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:4:4
Bit depth                                : 8 bits
Scan type                                : Progressive / Progressive
Bits/(Pixel*Frame)                       : 0.001
Stream size                              : 281 KiB (96%)
Color range                              : Limited
Codec configuration box                  : av1C / av1C


  


  The command to create the files and the output of FFMpeg is like so :

  


  
ffmpeg -y -i "D:\RAW VIDEO\Demos\demo.avi" -ss 00:00:00  -c:v libaom-av1 -pix_fmt yuv444p -minrate 500 -b:v 48k -maxrate 1000k -strict experimental -movflags +faststart -f mp4 NUL && ffmpeg -y -i "D:\RAW VIDEO\Demos\demo.avi" -ss 00:00:00  -c:v libaom-av1 -pix_fmt yuv444p -minrate 500 -b:v 48k -maxrate 1000k -strict experimental -movflags +faststart -pass 2 "D:\RAW VIDEO\Demos\converted\demo-av1.mp4"
ffmpeg version git-2020-05-22-38490cb Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200513

  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 46.100 / 56. 46.100
  libavcodec     58. 86.101 / 58. 86.101
  libavformat    58. 43.100 / 58. 43.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 82.100 /  7. 82.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100

Input #0, avi, from 'D:\RAW VIDEO\Demos\demo.avi':
  Metadata:
    encoder         : Lavf58.29.100
  Duration:
00:00:23.43, start: 0.000000, bitrate: 19719 kb/s
    Stream #0:0: Video: huffyuv (HFYU / 0x55594648), bgr0, 420x240, 19739 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc

Stream mapping:
  Stream #0:0 -> #0:0 (huffyuv (native) -> av1 (libaom-av1))

Press [q] to stop, [?] for help

[libaom-av1 @ 00000000003fb3c0] v1.0.0

Output #0, mp4, to 'NUL':
  Metadata:
    encoder         : Lavf58.43.100

    Stream #0:0: Video: av1 (libaom-av1) (av01 / 0x31307661), yuv444p, 420x240, q=-1--1, 48 kb/s, 30 fps, 15360 tbn, 30 tbc
    Metadata:
      encoder         : Lavc58.86.101 libaom-av1
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A




  


• AttributeError : 'FFmpegPCMAudio' object has no attribute '_process'

  16 septembre 2021, par Sujal Motagi

  I'm trying to make a discord music bot and this is my play function :

  


  async def play(self, ctx, url):
    ctx.voice_client.stop()
    FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'option': '-vn'}
    YDL_OPTIONS = {'format': 'bestaudio'}

    voice = ctx.voice_client
    with youtube_dl.YoutubeDL(YDL_OPTIONS) as ydl:
      info = ydl.extract_info(url, download=False)
      url2 = info['formats'][0]['url']

      voice.play(discord.FFmpegPCMAudio(url2, **FFMPEG_OPTIONS))


  


  But when I run the code I get the following error :

  


  [youtube] MbhXIddT2YY: Downloading webpage&#xA;Exception ignored in: <function at="at" 0x7f1fca7373a0="0x7f1fca7373a0">&#xA;Traceback (most recent call last):&#xA;  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/player.py", line 103, in __del__&#xA;    self.cleanup()&#xA;  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/player.py", line 154, in cleanup&#xA;    proc = self._process&#xA;AttributeError: &#x27;FFmpegPCMAudio&#x27; object has no attribute &#x27;_process&#x27;&#xA;Ignoring exception in command play:&#xA;Traceback (most recent call last):&#xA;  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 85, in wrapped&#xA;    ret = await coro(*args, **kwargs)&#xA;  File "/home/runner/Myoojic-Baat/music.py", line 42, in play&#xA;    voice.play(discord.FFmpegPCMAudio(url2, **FFMPEG_OPTIONS))&#xA;TypeError: __init__() got an unexpected keyword argument &#x27;option&#x27;&#xA;&#xA;The above exception was the direct cause of the following exception:&#xA;&#xA;Traceback (most recent call last):&#xA;  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/bot.py", line 939, in invoke&#xA;    await ctx.command.invoke(ctx)&#xA;  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 863, in invoke&#xA;    await injected(*ctx.args, **ctx.kwargs)&#xA;  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 94, in wrapped&#xA;    raise CommandInvokeError(exc) from exc&#xA;discord.ext.commands.errors.CommandInvokeError: Command raised an exception: TypeError: __init__() got an unexpected keyword argument &#x27;option&#x27;&#xA;</function>

  


  I found a related post with a similar error : AttributeError : ’FFmpegPCMAudio’ object has no attribute ’start’
But the solution there did not fix my problem.

  


• MoviePy and FFMPEG "No attribute" errors

  22 mars 2023, par CypherTretii

  I am trying to create a python script that will produce the type of cartoon TikToks with the satisfying video on the bottom part. I am still getting a bunch of errors like "ffmpeg has no attribute "metadata", or some other atribute that is missing"

  


  import os
import random
import hashlib
from moviepy.editor import *

# Function to get MD5 hash of a file
def get_md5_hash(file_path):
    with open(file_path, "rb") as f:
        bytes = f.read()
        hash = hashlib.md5(bytes)
        return hash.hexdigest()

# Input video file path
input_file_path = "C:/Users/Kris/output_movies/Bojack.Horseman.S01E01.720p.WEBRip.x264-W4F_1.mp4"

# Re-render the video
video = VideoFileClip(input_file_path)
video.write_videofile("re_rendered_video.mp4", codec='libx264')

# Change MD5 hash
new_md5_hash = get_md5_hash("re_rendered_video.mp4")
os.rename("re_rendered_video.mp4", f"{new_md5_hash}.mp4")

# Clear ID3 tag metadata
video = VideoFileClip(f"{new_md5_hash}.mp4")
video.reader.metadata.clear()
video.reader.close()

# Choose random video from folder and combine with input video
random_video_path = random.choice(os.listdir("C:/Users/Kris/satisfying_vids"))
random_video = VideoFileClip(f"C:/Users/Kris/satisfying_vids/{random_video_path}")

# Ensure the bottom video is at least as long as the input video
while random_video.duration < video.duration:
    if random_video.duration * 2 <= video.duration:
        random_video = concatenate_videoclips([random_video, random_video])
    else:
        duration_diff = video.duration - random_video.duration
        looped_video = random_video.subclip(0, duration_diff)
        random_video = concatenate_videoclips([random_video, looped_video])

# If the concatenated video exceeds the length of the input video, trim it
if random_video.duration > video.duration:
    random_video = random_video.subclip(0, video.duration)

# Resize the bottom video to match the input video resolution
random_video_resized = random_video.resize((960, 540))

# Combine the videos in 1:1 aspect ratio with the bottom video at the bottom of the screen
final_video = clips_array([[video], [random_video_resized]])

# Save the final video with .mp4 format
final_video.write_videofile(f"{new_md5_hash}_combined.mp4", codec='libx264')


# Increase brightness and contrast
final_video = VideoFileClip(f"{new_md5_hash}_combined.mp4")
final_video = final_video.fx(vfx.colorx, 0, [random.uniform(-0.2, 0.2), random.uniform(-1, 1)])
final_video.write_videofile(f"{new_md5_hash}_processed.mp4", codec='libx264')

# Color one pixel black and crop one pixel from bottom right corner
final_video = VideoFileClip(f"{new_md5_hash}_processed.mp4")
final_video = final_video.fx(vfx.painting, paint_color=[0,0,0], width=1, height=1, x=0, y=0)
final_video = final_video.crop(x1=0, y1=0, x2=final_video.w-1, y2=final_video.h-1)
final_video.write_videofile(f"{new_md5_hash}_final.mp4", codec='libx264')



  


  the goal for the code is :

  


  Takes an .mp4 file as input (the file is 1920 x 1080 in terms of resolution)

  


  Re-renders the video

  


  Changes the MD5 Hash

  


  Clears ID3 Tag Metadata

  


  Choses another random video from a folder, that is 1920 x 1080 pixels in terms of resolution - combine the chosen video with the input video in 1:1 aspect ratio. Put the video that is randomly chosen from the folder on bottom side of the screen.

  


  Increase the video’s brightness by random number ranging from -0.2 to 0.2

  


  Increase contrast by random number ranging from -1 to 1

  


  Color one pixel black

  


  Crop 1 pixel from the down right angle

  


  Save the final video with .mp4 format

  


  This is the error I am getting when running my code :
AttributeError : 'FFMPEG_VideoReader' object has no attribute 'metadata'

  


  Along with various missing attributes.