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Sur d’autres sites (8180)

  • TS video copied to MP4, missing 3 first frames when programmatically read (ffmpeg bug)

    3 septembre 2023, par Vasilis Lemonidis

    Running :

    


    ffmpeg -i test.ts -fflags +genpts -c copy -y test.mp4


    


    for this test.ts, which has 30 frames, readable by opencv, I end up with 28 frames, out of which 27 are readable by opencv. More specifically :

    


    ffprobe -v error -select_streams v:0 -count_packets  -show_entries stream=nb_read_packets -of csv=p=0 tmp.ts 


    


    returns 30.

    


    ffprobe -v error -select_streams v:0 -count_packets     -show_entries stream=nb_read_packets -of csv=p=0 tmp.mp4


    


    returns 28.

    


    Using OpenCV in that manner

    


    cap = cv2.VideoCapture(tmp_path)
readMat = []
while cap.isOpened():
        ret, frame = cap.read()
        if not ret:
            break
        readMat.append(frame)


    


    I get for the ts file 30 frames, while for the mp4 27 frames.

    


    Could someone explain why the discrepancies ? I get no error during the transformation from ts to mp4 :

    


    ffmpeg version N-111746-gd53acf452f Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 11.3.0 (GCC)
  configuration: --ld=g++ --bindir=/bin --extra-libs='-lpthread -lm' --pkg-config-flags=--static --enable-static --enable-gpl --enable-libaom --enable-libass --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libsvtav1 --enable-libdav1d --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-libnpp 
  libavutil      58. 16.101 / 58. 16.101
  libavcodec     60. 23.100 / 60. 23.100
  libavformat    60. 10.100 / 60. 10.100
  libavdevice    60.  2.101 / 60.  2.101
  libavfilter     9. 10.100 /  9. 10.100
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
[mpegts @ 0x4237240] DTS discontinuity in stream 0: packet 5 with DTS 306003, packet 6 with DTS 396001
Input #0, mpegts, from 'tmp.ts':
  Duration: 00:00:21.33, start: 3.400000, bitrate: 15 kb/s
  Program 1 
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
  Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 300x300, 1 fps, 3 tbr, 90k tbn
Output #0, mp4, to 'test.mp4':
  Metadata:
    encoder         : Lavf60.10.100
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 300x300, q=2-31, 1 fps, 3 tbr, 90k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[out#0/mp4 @ 0x423e280] video:25kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.192123%
frame=   30 fps=0.0 q=-1.0 Lsize=      26kB time=00:00:21.00 bitrate=  10.3kbits/s speed=1e+04x 


    


    Additional information

    


    The origin of the video I am processing comes from a continuous stitching operation of still images ts videos, produced by this class update method :

    


    import cv2
import os
import subprocess
from tempfile import NamedTemporaryFile
class VideoUpdater:
    def __init__(
        self, video_path: str, framerate: int, timePerFrame: Optional[int] = None
    ):
        """
        Video updater takes in a video path, and updates it using a supplied frame, based on a given framerate.
        Args:
            video_path: str: Specify the path to the video file
            framerate: int: Set the frame rate of the video
        """
        if not video_path.endswith(".mp4"):
            LOGGER.warning(
                f"File type {os.path.splitext(video_path)[1]} not supported for streaming, switching to ts"
            )
            video_path = os.path.splitext(video_path)[0] + ".mp4"

        self._ps = None
        self.env = {
            
        }
        self.ffmpeg = "/usr/bin/ffmpeg "

        self.video_path = video_path
        self.ts_path = video_path.replace(".mp4", ".ts")
        self.tfile = None
        self.framerate = framerate
        self._video = None
        self.last_frame = None
        self.curr_frame = None


    def update(self, frame: np.ndarray):
        if len(frame.shape) == 2:
            frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2BGR)
        else:
            frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
        self.writeFrame(frame)

    def writeFrame(self, frame: np.ndarray):
        """
        The writeFrame function takes a frame and writes it to the video file.
        Args:
            frame: np.ndarray: Write the frame to a temporary file
        """


        tImLFrame = NamedTemporaryFile(suffix=".png")
        tVidLFrame = NamedTemporaryFile(suffix=".ts")

        cv2.imwrite(tImLFrame.name, frame)
        ps = subprocess.Popen(
            self.ffmpeg
            + rf"-loop 1 -r {self.framerate} -i {tImLFrame.name} -t {self.framerate} -vcodec libx264 -pix_fmt yuv420p -y {tVidLFrame.name}",
            env=self.env,
            shell=True,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
        )
        ps.communicate()
        if os.path.isfile(self.ts_path):
            # this does not work to watch, as timestamps are not updated
            ps = subprocess.Popen(
                self.ffmpeg
                + rf'-i "concat:{self.ts_path}|{tVidLFrame.name}" -c copy -y {self.ts_path.replace(".ts", ".bak.ts")}',
                env=self.env,
                shell=True,
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
            )
            ps.communicate()
            shutil.move(self.ts_path.replace(".ts", ".bak.ts"), self.ts_path)

        else:
            shutil.copyfile(tVidLFrame.name, self.ts_path)
        # fixing timestamps, we dont have to wait for this operation
        ps = subprocess.Popen(
            self.ffmpeg
            + rf"-i {self.ts_path} -fflags +genpts -c copy -y {self.video_path}",
            env=self.env,
            shell=True,
            # stdout=subprocess.PIPE,
            # stderr=subprocess.PIPE,
        )
        tImLFrame.close()
        tVidLFrame.close()


    


  • ffmpeg giving Error while decoding stream #0:1 : Invalid data found when processing input

    11 octobre 2023, par user1432181

    I am trying to merge two video files into one using ffmpeg on Windows. The process has been proven to work over and over (with over 100 files merged together at some points) - but I have come across an input file that is causing the process to fail with the errors :

    


    _[aac @ 00000142532f74c0] channel element 1.0 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 00000142532f74c0] channel element 1.0 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 00000142532f74c0] channel element 1.0 is not allocated
.
.
.


    


    There seems to be 3 command line steps to get here, using a concats-inputs.dat file containing :

    


    file E:/..../snippet A.mp4
file E:/..../snippet B.mp4


    


    (Copies of these files can be found at https://filebin.net/77wbowvh7vbklkey/snippet_A.mp4 and https://filebin.net/77wbowvh7vbklkey/snippet_B.mp4)

    


    Step 1 :

    


    > ffmpeg-6.0-full_build/bin/ffmpeg -y -progress ".Default.mp4.progressinfo.dat" -vsync 0 -f concat -safe 0 -i "E:/...../concat-inputs.dat" -c:v copy -c:a copy -crf 0 -b:v 10M "E:/...../video.Default.mp4"


    


    with the output....

    


    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-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-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.  2.100 / 58.  2.100

  libavcodec     60.  3.100 / 60.  3.100

  libavformat    60.  3.100 / 60.  3.100

  libavdevice    60.  1.100 / 60.  1.100

  libavfilter     9.  3.100 /  9.  3.100

  libswscale      7.  1.100 /  7.  1.100

  libswresample   4. 10.100 /  4. 10.100

  libpostproc    57.  1.100 / 57.  1.100

-vsync is deprecated. Use -fps_mode

Passing a number to -vsync is deprecated, use a string argument as described in the manual.

[mov,mp4,m4a,3gp,3g2,mj2 @ 000001bf88ffe240] Auto-inserting h264_mp4toannexb bitstream filter

Input #0, concat, from 'E:/...../concat-inputs.dat':

  Duration: N/A, start: -0.010667, bitrate: 20382 kb/s

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 20043 kb/s, 50 fps, 50 tbr, 12800 tbn

    Metadata:

      handler_name    : VideoHandler

      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler

      vendor_id       : [0][0][0][0]

Output #0, mp4, to 'E:/...../video.Default.mp4':

  Metadata:

    encoder         : Lavf60.3.100

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 10000 kb/s, 50 fps, 50 tbr, 12800 tbn

    Metadata:

      handler_name    : VideoHandler

      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler

      vendor_id       : [0][0][0][0]

Stream mapping:

  Stream #0:0 -> #0:0 (copy)

  Stream #0:1 -> #0:1 (copy)

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

frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=N/A    
_[mov,mp4,m4a,3gp,3g2,mj2 @ 000001bf890653c0] Auto-inserting h264_mp4toannexb bitstream filter

[mp4 @ 000001bf89000580] Non-monotonous DTS in output stream 0:1; previous: 180224, current: 180192; changing to 180225. This may result in incorrect timestamps in the output file.

frame=  210 fps=0.0 q=-1.0 Lsize=   11537kB time=00:00:04.21 bitrate=22433.7kbits/s speed=41.9x

video:11417kB audio:114kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.053312%


    


    Step 2

    


    > ffmpeg-6.0-full_build/bin/ffmpeg -y -progress ".Default.mp4.progressinfo.dat" -vsync 0 -f concat -safe 0 -i "E:/...../concat-inputs.dat" -c:v copy -c:a copy -crf 0 -b:v 10M "E:/...../audio.Default.wav"


    


    which outputs...

    


    ffmpeg version 6.0-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-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-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.  2.100 / 58.  2.100

  libavcodec     60.  3.100 / 60.  3.100

  libavformat    60.  3.100 / 60.  3.100

  libavdevice    60.  1.100 / 60.  1.100

  libavfilter     9.  3.100 /  9.  3.100

  libswscale      7.  1.100 /  7.  1.100

  libswresample   4. 10.100 /  4. 10.100

  libpostproc    57.  1.100 / 57.  1.100

-vsync is deprecated. Use -fps_mode

Passing a number to -vsync is deprecated, use a string argument as described in the manual.

[mov,mp4,m4a,3gp,3g2,mj2 @ 00000246d314e240] Auto-inserting h264_mp4toannexb bitstream filter

Input #0, concat, from 'E:/...../concat-inputs.dat':

  Duration: N/A, start: -0.010667, bitrate: 20382 kb/s

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 20043 kb/s, 50 fps, 50 tbr, 12800 tbn

    Metadata:

      handler_name    : VideoHandler

      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler

      vendor_id       : [0][0][0][0]

[out#0/wav @ 00000246d31bd240] Codec AVOption b (set bitrate (in bits/s)) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

Output #0, wav, to 'E:/...../audio.Default.wav':

  Metadata:

    ISFT            : Lavf60.3.100

  Stream #0:0(und): Audio: aac (LC) ([255][0][0][0] / 0x00FF), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler

      vendor_id       : [0][0][0][0]

Stream mapping:

  Stream #0:1 -> #0:0 (copy)

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

size=       0kB time=00:00:00.00 bitrate=N/A speed=N/A    
_[mov,mp4,m4a,3gp,3g2,mj2 @ 00000246d3b009c0] Auto-inserting h264_mp4toannexb bitstream filter

[wav @ 00000246d3150580] Non-monotonous DTS in output stream 0:0; previous: 180224, current: 180192; changing to 180224. This may result in incorrect timestamps in the output file.

size=     114kB time=00:00:04.21 bitrate= 222.4kbits/s speed= 128x

video:0kB audio:114kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.102561%


    


    Step 3

    


    > ffmpeg-6.0-full_build/bin/ffmpeg -y -progress ".Default.mp4.progressinfo.dat" -i "E:/...../video.Default.mp4" -i "E:/...../audio.Default.wav" -crf 0 -c:v copy -c:a aac "E:/...../Default.mp4"


    


    ... which then gives the errors....

    


    ffmpeg version 6.0-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-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-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.  2.100 / 58.  2.100

  libavcodec     60.  3.100 / 60.  3.100

  libavformat    60.  3.100 / 60.  3.100

  libavdevice    60.  1.100 / 60.  1.100

  libavfilter     9.  3.100 /  9.  3.100

  libswscale      7.  1.100 /  7.  1.100

  libswresample   4. 10.100 /  4. 10.100

  libpostproc    57.  1.100 / 57.  1.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'E:/...../video.Default.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf60.3.100

  Duration: 00:00:04.23, start: 0.000000, bitrate: 22359 kb/s

  Stream #0:0[0x1](und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 22178 kb/s, 49.80 fps, 50 tbr, 12800 tbn (default)

    Metadata:

      handler_name    : VideoHandler

      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 libx264

  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 221 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

      vendor_id       : [0][0][0][0]

[aac @ 000001425315e580] Multiple frames in a packet.

Input #1, wav, from 'E:/...../audio.Default.wav':

  Metadata:

    encoder         : Lavf60.3.100

  Duration: 00:00:04.22, bitrate: 221 kb/s

  Stream #1:0: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 96000 Hz, 5.1, fltp, 339 kb/s

Stream mapping:

  Stream #0:0 -> #0:0 (copy)

  Stream #0:1 -> #0:1 (aac (native) -> aac (native))

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

Output #0, mp4, to 'E:/...../Default.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf60.3.100

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 22178 kb/s, 49.80 fps, 50 tbr, 12800 tbn (default)

    Metadata:

      handler_name    : VideoHandler

      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 341 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 aac

frame=    0 fps=0.0 q=-1.0 size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
_[aac @ 00000142532f74c0] channel element 1.0 is not allocated

Error while decoding stream #0:1: Invalid data found when processing input

[aac @ 00000142532f74c0] channel element 1.0 is not allocated
.
.
.


    


    If I was to do this to merge snippet B with snippet B then it would work - it's something about snippet A that is causing the problem.

    


    Is there any way to get around this... what is it about snippet A that is causing a problem... and is there a way to "normalize" it so that it can be merged as part of the "set".

    


    Note, I just upgraded to ffmpeg6 after a previous version was giving the same problems - so I will also work on the deprecated messages when I can.

    


  • ffmpeg giving Error while decoding stream #0:1 : Invalid data found when processing input

    12 octobre 2023, par Aby

    I am trying to merge two video files into one using ffmpeg on Windows. The process has been proven to work over and over (with over 100 files merged together at some points) - but I have come across an input file that is causing the process to fail with the errors :

    


    _[aac @ 00000142532f74c0] channel element 1.0 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 00000142532f74c0] channel element 1.0 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 00000142532f74c0] channel element 1.0 is not allocated
.
.
.


    


    There seems to be 3 command line steps to get here, using a concats-inputs.dat file containing :

    


    file E:/..../snippet A.mp4
file E:/..../snippet B.mp4


    


    (Copies of these files can be found at https://filebin.net/77wbowvh7vbklkey/snippet_A.mp4 and https://filebin.net/77wbowvh7vbklkey/snippet_B.mp4)

    


    Step 1 :

    


    > ffmpeg-6.0-full_build/bin/ffmpeg -y -progress ".Default.mp4.progressinfo.dat" -vsync 0 -f concat -safe 0 -i "E:/...../concat-inputs.dat" -c:v copy -c:a copy -crf 0 -b:v 10M "E:/...../video.Default.mp4"


    


    with the output....

    


    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-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-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.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100

-vsync is deprecated. Use -fps_mode

Passing a number to -vsync is deprecated, use a string argument as described in the manual.
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001bf88ffe240] Auto-inserting h264_mp4toannexb bitstream filter
Input #0, concat, from 'E:/...../concat-inputs.dat':

  Duration: N/A, start: -0.010667, bitrate: 20382 kb/s

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 20043 kb/s, 50 fps, 50 tbr, 12800 tbn

    Metadata:

      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]

Output #0, mp4, to 'E:/...../video.Default.mp4':

  Metadata:
    encoder         : Lavf60.3.100

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 10000 kb/s, 50 fps, 50 tbr, 12800 tbn

    Metadata:

      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]

      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]

Stream mapping:

  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)

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

frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=N/A    
_[mov,mp4,m4a,3gp,3g2,mj2 @ 000001bf890653c0] Auto-inserting h264_mp4toannexb bitstream filter

[mp4 @ 000001bf89000580] Non-monotonous DTS in output stream 0:1; previous: 180224, current: 180192; changing to 180225. This may result in incorrect timestamps in the output file.

frame=  210 fps=0.0 q=-1.0 Lsize=   11537kB time=00:00:04.21 bitrate=22433.7kbits/s speed=41.9x

video:11417kB audio:114kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.053312%


    


    Step 2

    


    > ffmpeg-6.0-full_build/bin/ffmpeg -y -progress ".Default.mp4.progressinfo.dat" -vsync 0 -f concat -safe 0 -i "E:/...../concat-inputs.dat" -c:v copy -c:a copy -crf 0 -b:v 10M "E:/...../audio.Default.wav"


    


    which outputs...

    


    ffmpeg version 6.0-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-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-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.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100

-vsync is deprecated. Use -fps_mode

Passing a number to -vsync is deprecated, use a string argument as described in the manual.

[mov,mp4,m4a,3gp,3g2,mj2 @ 00000246d314e240] Auto-inserting h264_mp4toannexb bitstream filter

Input #0, concat, from 'E:/...../concat-inputs.dat':

  Duration: N/A, start: -0.010667, bitrate: 20382 kb/s

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 20043 kb/s, 50 fps, 50 tbr, 12800 tbn

    Metadata:

      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]

[out#0/wav @ 00000246d31bd240] Codec AVOption b (set bitrate (in bits/s)) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

Output #0, wav, to 'E:/...../audio.Default.wav':

  Metadata:

    ISFT            : Lavf60.3.100

  Stream #0:0(und): Audio: aac (LC) ([255][0][0][0] / 0x00FF), 96000 Hz, 5.1, fltp, 339 kb/s

    Metadata:

      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]

Stream mapping:

  Stream #0:1 -> #0:0 (copy)

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

size=       0kB time=00:00:00.00 bitrate=N/A speed=N/A    
_[mov,mp4,m4a,3gp,3g2,mj2 @ 00000246d3b009c0] Auto-inserting h264_mp4toannexb bitstream filter

[wav @ 00000246d3150580] Non-monotonous DTS in output stream 0:0; previous: 180224, current: 180192; changing to 180224. This may result in incorrect timestamps in the output file.

size=     114kB time=00:00:04.21 bitrate= 222.4kbits/s speed= 128x

video:0kB audio:114kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.102561%


    


    Step 3

    


    > ffmpeg-6.0-full_build/bin/ffmpeg -y -progress ".Default.mp4.progressinfo.dat" -i "E:/...../video.Default.mp4" -i "E:/...../audio.Default.wav" -crf 0 -c:v copy -c:a aac "E:/...../Default.mp4"


    


    ... which then gives the errors....

    


    ffmpeg version 6.0-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-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-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.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100    
  libavformat    60.  3.100 / 60.  3.100    
  libavdevice    60.  1.100 / 60.  1.100    
  libavfilter     9.  3.100 /  9.  3.100    
  libswscale      7.  1.100 /  7.  1.100    
  libswresample   4. 10.100 /  4. 10.100    
  libpostproc    57.  1.100 / 57.  1.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'E:/...../video.Default.mp4':

  Metadata:

    major_brand     : isom    
    minor_version   : 512    
    compatible_brands: isomiso2avc1mp41    
    encoder         : Lavf60.3.100

  Duration: 00:00:04.23, start: 0.000000, bitrate: 22359 kb/s

  Stream #0:0[0x1](und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 22178 kb/s, 49.80 fps, 50 tbr, 12800 tbn (default)

    Metadata:

      handler_name    : VideoHandler    
      vendor_id       : [0][0][0][0]    
      encoder         : Lavc60.3.100 libx264

  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 221 kb/s (default)

    Metadata:

      handler_name    : SoundHandler    
      vendor_id       : [0][0][0][0]

[aac @ 000001425315e580] Multiple frames in a packet.

Input #1, wav, from 'E:/...../audio.Default.wav':

  Metadata:

    encoder         : Lavf60.3.100

  Duration: 00:00:04.22, bitrate: 221 kb/s

  Stream #1:0: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 96000 Hz, 5.1, fltp, 339 kb/s

Stream mapping:

  Stream #0:0 -> #0:0 (copy)    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))

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

Output #0, mp4, to 'E:/...../Default.mp4':

  Metadata:

    major_brand     : isom    
    minor_version   : 512    
    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf60.3.100

  Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 22178 kb/s, 49.80 fps, 50 tbr, 12800 tbn (default)

    Metadata:

      handler_name    : VideoHandler    
      vendor_id       : [0][0][0][0]    
      encoder         : Lavc60.3.100 libx264

  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, 5.1, fltp, 341 kb/s (default)

    Metadata:

      handler_name    : SoundHandler    
      vendor_id       : [0][0][0][0]    
      encoder         : Lavc60.3.100 aac

frame=    0 fps=0.0 q=-1.0 size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
_[aac @ 00000142532f74c0] channel element 1.0 is not allocated

Error while decoding stream #0:1: Invalid data found when processing input    
[aac @ 00000142532f74c0] channel element 1.0 is not allocated
.
.
.


    


    If I was to do this to merge snippet B with snippet B then it would work - it's something about snippet A that is causing the problem.

    


    Is there any way to get around this... what is it about snippet A that is causing a problem... and is there a way to "normalize" it so that it can be merged as part of the "set".

    


    Note, I just upgraded to ffmpeg6 after a previous version was giving the same problems - so I will also work on the deprecated messages when I can.

    


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