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• High pitched audio or no audio at all when converting AVI video to MP4 with FFmpeg [closed]

  15 août 2023, par Karen S

  I'm pretty new to FFmpeg and I'm having trouble converting a video from AVI format to MP4. I'm trying to convert pcm_s16le to aac. No matter what audio stream I use, the resulting audio in the MP4 file is either very high pitched and choppy (stream 1) or the audio stream is silent (stream 2).

  


  The AVI video has two audio streams :

  


  Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s


  


  In VLC Media Player the video plays fine and it uses the second audio stream.

  


  When I run ffmpeg -i input.avi -vcodec libx264 -crf 27 output.mp4 in my terminal, the output audio in the MP4 file is very high pitched and choppy in VLC.
This is the codec information for the audio stream in VLC after the conversion :

  


  Codec: MPEG AAC Audio (mp4a)
Type: Audio
Channels: Stereo
Sample rate: 48000 Hz
Bits per sample: 32


  


  When I specify the audio stream and codec the resulting video is silent.

  


  ffmpeg -i input.avi -map 0:v:0 -vcodec libx264 -crf 29 -map 0:a:1 -acodec aac output.mp4


  


  This is the terminal output from FFmpeg :

  


  FILEPATH -i "input.avi" -map 0:v:0 -vcodec libx264 -crf 29 -map 0:a:1 -acodec aac "output.mp4"
ffmpeg version 2023-06-11-git-09621fd7d9-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58. 13.100 / 58. 13.100
  libavcodec     60. 17.100 / 60. 17.100
  libavformat    60.  6.100 / 60.  6.100
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  8.101 /  9.  8.101
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
[avi @ 000002533665a400] Switching to NI mode, due to poor interleaving
Input #0, avi, from 'input.avi':
  Duration: 00:10:40.64, start: 0.000000, bitrate: 28852 kb/s
  Stream #0:0: Video: dvvideo, yuv411p, 720x480 [SAR 32:27 DAR 16:9], 25000 kb/s, SAR 8:9 DAR 4:3, 60k fps, 29.97 tbr, 60k tbn
  Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
  Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
File 'output.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (dvvideo (native) -> h264 (libx264))
  Stream #0:2 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 00000253366702c0] using SAR=8/9
[libx264 @ 00000253366702c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 00000253366702c0] profile High 4:2:2, level 3.0, 4:2:2, 8-bit
[libx264 @ 00000253366702c0] 264 - core 164 r3107 a8b68eb - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=12 lookahead_threads=2 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=29.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output.mp4':
  Metadata:
    encoder         : Lavf60.6.100
  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv422p(tv, bottom coded first (swapped)), 720x480 [SAR 8:9 DAR 4:3], q=2-31, 29.97 fps, 30k tbn
    Metadata:
      encoder         : Lavc60.17.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc60.17.100 aac
[dvvideo @ 000002533879d780] Concealing bitstream errors.41 bitrate= 901.6kbits/s speed=2.01x
    Last message repeated 76 times
[dvvideo @ 000002533878f640] Concealing bitstream errors.43 bitrate= 925.1kbits/s speed=1.97x
    Last message repeated 19 times
[out#0/mp4 @ 00000253366770c0] video:72743kB audio:119kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.649282%
frame=19200 fps= 58 q=-1.0 Lsize=   73335kB time=00:10:40.61 bitrate= 937.8kbits/s speed=1.92x
[libx264 @ 00000253366702c0] frame I:99    Avg QP:28.84  size: 35252
[libx264 @ 00000253366702c0] frame P:4922  Avg QP:31.82  size:  9208
[libx264 @ 00000253366702c0] frame B:14179 Avg QP:36.03  size:  1811
[libx264 @ 00000253366702c0] consecutive B-frames:  1.2%  0.8%  1.1% 97.0%
[libx264 @ 00000253366702c0] mb I  I16..4: 13.7% 74.6% 11.7%
[libx264 @ 00000253366702c0] mb P  I16..4:  1.7%  6.7%  1.1%  P16..4: 38.6% 13.2%  9.3%  0.0%  0.0%    skip:29.3%
[libx264 @ 00000253366702c0] mb B  I16..4:  0.2%  0.5%  0.0%  B16..8: 37.3%  2.8%  0.7%  direct: 2.1%  skip:56.3%  L0:42.5% L1:52.2% BI: 5.3%
[libx264 @ 00000253366702c0] 8x8 transform intra:69.6% inter:71.7%
[libx264 @ 00000253366702c0] coded y,uvDC,uvAC intra: 65.4% 59.0% 8.7% inter: 12.9% 7.0% 0.1%
[libx264 @ 00000253366702c0] i16 v,h,dc,p: 12% 64%  7% 16%
[libx264 @ 00000253366702c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 26% 26%  5%  6%  5%  8%  5%  8%
[libx264 @ 00000253366702c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 48% 15%  4%  5%  4%  7%  3%  5%
[libx264 @ 00000253366702c0] i8c dc,h,v,p: 61% 19% 16%  4%
[libx264 @ 00000253366702c0] Weighted P-Frames: Y:3.5% UV:1.3%
[libx264 @ 00000253366702c0] ref P L0: 55.4% 15.5% 20.6%  8.2%  0.3%
[libx264 @ 00000253366702c0] ref B L0: 89.3%  8.2%  2.5%
[libx264 @ 00000253366702c0] ref B L1: 95.5%  4.5%
[libx264 @ 00000253366702c0] kb/s:930.17
[aac @ 00000253382c31c0] Qavg: 65536.000


  


  Could someone point me in the right direction please ? I've tried doing the conversion with Handbrake as well and the audio is still choppy.

  


• Youtube automatic creating and starting live stream with ffmpeg Python

  20 août 2023, par MrKolia1_1

  I'm trying to create a new broadcast on the channel and then start the stream so that the video is broadcast, the problem is that I can't start the broadcast after it is created, it is in the scheduled, how can I start the broadcast ?

  


  

  


  import datetime
import json
import os
import threading
import time

import cv2
import subprocess
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build

APP_TOKEN_FILE = "client_secret.json"
USER_TOKEN_FILE = "user_token.json"

SCOPES = [
    'https://www.googleapis.com/auth/youtube.force-ssl',
    'https://www.googleapis.com/auth/userinfo.profile',
]


def get_stream_info(stream_id):
    creds = get_creds_saved()
    service = build('youtube', 'v3', credentials=creds)

    request = service.liveBroadcasts().list(
        part='snippet,contentDetails,status',
        id=stream_id
    )

    response = request.execute()

    if 'items' in response and len(response['items']) > 0:
        return response['items'][0]
    else:
        return None


def get_creds_cons():
    # Create credentials via console flow
    flow = InstalledAppFlow.from_client_secrets_file(APP_TOKEN_FILE, SCOPES)
    return flow.run_console()


def get_creds_saved():
    creds = None

    if os.path.exists(USER_TOKEN_FILE):
        # Load user credentials from a saved file
        creds = Credentials.from_authorized_user_file(USER_TOKEN_FILE, SCOPES)

    if not creds or not creds.valid:
        if creds and creds.expired and creds.refresh_token:
            creds.refresh(Request())
        else:
            # Create new credentials via local server flow
            flow = InstalledAppFlow.from_client_secrets_file(APP_TOKEN_FILE, SCOPES)
            creds = flow.run_local_server(port=0)

        with open(USER_TOKEN_FILE, 'w') as token:
            token.write(creds.to_json())

    return creds


def get_service():
    # Get YouTube API service using credentials
    creds = get_creds_saved()
    service = build('youtube', 'v3', credentials=creds)
    return service


def create_live_stream(title, description):
    service = get_service()
    scheduled_start_time = datetime.datetime.utcnow().isoformat()

    request = service.liveBroadcasts().insert(
        part="snippet,status,contentDetails",
        body={
            "snippet": {
                "title": title,
                "description": description,
                "scheduledStartTime": scheduled_start_time,
            },
            "status": {
                "privacyStatus": "private",
                "lifeCycleStatus": "ready",
                "recordingStatus": "notRecording",
                "selfDeclaredMadeForKids": False
            },
            "contentDetails": {
                "enableAutoStart": False
            }
        }
    )
    response = request.execute()
    return response['id']


def stream_video(video_path, stream_key):
    args = [
        '-re',
        '-i', video_path,
        '-c:v', 'libx264',
        '-preset', 'veryfast',
        '-c:a', 'aac',
        '-f', 'flv',
        f'rtmp://a.rtmp.youtube.com/live2/{stream_key}'
    ]

    subprocess.run(['ffmpeg'] + args)


def get_scheduled_stream_info(stream_id):
    creds = get_creds_saved()
    service = build('youtube', 'v3', credentials=creds)

    request = service.liveBroadcasts().list(
        part='snippet,status',
        id=stream_id
    )

    response = request.execute()

    if 'items' in response and len(response['items']) > 0:
        return response['items'][0]
    else:
        return None



if __name__ == '__main__':
    print("** Hello, Azzrael_YT subscribers!!!\n")

    strId = create_live_stream("tittle", "description")
    pretty_json = json.dumps(get_scheduled_stream_info(strId), indent=4)

    print(pretty_json)

    # Stream video
    video_path = "C:/Users/admin/PycharmProjects/pythonProject/video.mp4"  # Update this with your video file path
    stream_key = 'dh9z-jtkx-wbq3-6wvp-2tac'  # Replace with your YouTube stream key
    video_thread = threading.Thread(target=stream_video, args=(video_path, stream_key))
    #video_thread.start()



  


  json responce info from created stream :
,
"scheduledStartTime" : "2023-08-20T10:51:22Z",
"isDefaultBroadcast" : false,
"liveChatId" : "KicKGFVDZ01UNS1CLVNfV0FJencxVXY4cC1ZQRILSG9QU0RJZ2hQMkE"
,
"status" : 
"lifeCycleStatus" : "created",
"privacyStatus" : "private",
"recordingStatus" : "notRecording",
"madeForKids" : false,
"selfDeclaredMadeForKids" : false



  


• FFmpeg : Audio is sped up after compressing AVI video [closed]

  21 août 2023, par Karen S

  I have an AVI video and I want to reduce the file size. When I run the FFmpeg command below, the resulting audio in the video is sped up, and the last bit of the video has no audio.

  


  The FFmpeg command

  


  ffmpeg -i "in.avi" -vcodec libx264 -acodec copy -crf 26 -vf "scale=-1:'min(720,ih)', yadif=1" out.avi


  


  The output messages

  


  ffmpeg version 2023-06-11-git-09621fd7d9-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58. 13.100 / 58. 13.100
  libavcodec     60. 17.100 / 60. 17.100
  libavformat    60.  6.100 / 60.  6.100
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  8.101 /  9.  8.101
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
[avi @ 000002255f70d540] Switching to NI mode, due to poor interleaving
Input #0, avi, from 'in.avi':
  Duration: 00:10:40.64, start: 0.000000, bitrate: 28852 kb/s
  Stream #0:0: Video: dvvideo, yuv411p, 720x480 [SAR 32:27 DAR 16:9], 25000 kb/s, SAR 8:9 DAR 4:3, 60k fps, 29.97 tbr, 60k tbn
  Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
  Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (dvvideo (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libx264 @ 000002255fbc4940] using SAR=8/9
[libx264 @ 000002255fbc4940] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000002255fbc4940] profile High 4:2:2, level 3.1, 4:2:2, 8-bit
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf60.6.100
  Stream #0:0: Video: h264 (H264 / 0x34363248), yuv422p(tv, progressive), 720x480 [SAR 8:9 DAR 4:3], q=2-31, 59.94 fps, 59.94 tbn
    Metadata:
      encoder         : Lavc60.17.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s16, 1536 kb/s
[dvvideo @ 000002255fb36d80] Concealing bitstream errors.33 bitrate=2437.5kbits/s speed=0.902x
    Last message repeated 15 times
[dvvideo @ 000002255fb36d80] Concealing bitstream errors.77 bitrate=2439.5kbits/s speed=0.902x
    Last message repeated 60 times
[dvvideo @ 0000022560071680] Concealing bitstream errors.72 bitrate=2461.8kbits/s speed=0.895x
    Last message repeated 18 times
[dvvideo @ 0000022560071680] Concealing bitstream errors.12 bitrate=2459.9kbits/s speed=0.894x
[out#0/avi @ 000002255f70d8c0] video:110055kB audio:80088kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.724923%
frame=38400 fps= 57 q=-1.0 Lsize=  191521kB time=00:10:40.60 bitrate=2449.2kbits/s speed=0.946x
[libx264 @ 000002255fbc4940] frame I:165   Avg QP:27.36  size: 37180
[libx264 @ 000002255fbc4940] frame P:9710  Avg QP:30.58  size:  7328
[libx264 @ 000002255fbc4940] frame B:28525 Avg QP:35.24  size:  1241
[libx264 @ 000002255fbc4940] consecutive B-frames:  0.8%  0.3%  0.3% 98.6%
[libx264 @ 000002255fbc4940] mb I  I16..4: 10.3% 67.6% 22.1%
[libx264 @ 000002255fbc4940] mb P  I16..4:  1.0%  3.8%  0.8%  P16..4: 40.7% 12.1%  8.6%  0.0%  0.0%    skip:33.0%
[libx264 @ 000002255fbc4940] mb B  I16..4:  0.1%  0.2%  0.0%  B16..8: 36.9%  1.8%  0.4%  direct: 1.4%  skip:59.1%  L0:45.0% L1:51.8% BI: 3.1%
[libx264 @ 000002255fbc4940] 8x8 transform intra:66.5% inter:68.7%
[libx264 @ 000002255fbc4940] coded y,uvDC,uvAC intra: 60.3% 64.7% 10.1% inter: 10.7% 6.9% 0.1%
[libx264 @ 000002255fbc4940] i16 v,h,dc,p: 21% 35% 10% 34%
[libx264 @ 000002255fbc4940] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 23% 19%  6%  8%  7% 12%  6%  9%
[libx264 @ 000002255fbc4940] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 25% 16%  6% 10%  7% 12%  5%  6%
[libx264 @ 000002255fbc4940] i8c dc,h,v,p: 58% 19% 18%  5%
[libx264 @ 000002255fbc4940] Weighted P-Frames: Y:3.0% UV:1.5%
[libx264 @ 000002255fbc4940] ref P L0: 56.9% 16.8% 19.3%  6.7%  0.2%
[libx264 @ 000002255fbc4940] ref B L0: 87.5% 10.4%  2.2%
[libx264 @ 000002255fbc4940] ref B L1: 93.2%  6.8%
[libx264 @ 000002255fbc4940] kb/s:1407.29


  


  Since the audio stream is being copied I don't understand why the resulting audio sounds sped up. The video looks fine, it's just the audio that is the issue.

  


  I've tried other options too, such as converting the audio to aac or mp3 and the resulting audio still sounds sped up and high pitched.

  


  Does anyone know why the audio isn't simply being copied the way it sounds in the original AVI video and do you have any suggestions for how to fix the issue ?