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FFmpeg concat video and audio out of sync
https://www.xspdf.com/resolution/52156277.html#:~:text=FFMPEG%20audio%20out%20of%20sync%20when%20transcoding%20%28demuxing%29,is%20in%20sync%2C%20you%20may%20%27ffmpeg%27%20them%20individually.
FFmpeg concat video and audio out of sync - Stack …
https://stackoverflow.com/questions/35416110/ffmpeg-concat-video-and-audio-out-of-sync
Step 1 Pad out the audio in each segment. ffmpeg -i segment1.mov -af apad -c:v copy <audio encoding params> -shortest -avoid_negative_ts make_zero -fflags +genpts padded1.mov Or. Generate segments with synced streams. ffmpeg -y -ss 00:00:02.750 -i input.MOV -c copy -t 00:00:05.880 -avoid_negative_ts make_zero -fflags +genpts segment.MOV Step 2 Concat
video - FFMPEG audio out of sync when transcoding ...
https://superuser.com/questions/1042988/ffmpeg-audio-out-of-sync-when-transcoding-demuxing-from-dv
SRC="/home/brian/Desktop/audio_shift" set -f for FILE in $(find "$SRC" -name *.dv); do echo "Konvertiere $FILE " dvgrab -input $FILE -f dv2 -s 0 -t done This generates an AVI file (DV2 format), per each DV file in the current folder, which can be further converted without any audio sync problem (e.g. to MP4).
FFMPEG Audio, video out of sync - Stack Overflow
https://stackoverflow.com/questions/9461604/ffmpeg-audio-video-out-of-sync
I'm creating Video using FFMPEG from pngs. The problem is on creating the video, and combining with video, its never in sync. Create video: ffmpeg -i /home/ubuntu/pngs/* -vcodec libvpx -r 25 -b 1...
FFMPEG Audio/video out of sync after cutting and ...
https://stackoverflow.com/questions/60005999/ffmpeg-audio-video-out-of-sync-after-cutting-and-concatonating-even-after-transc
For each video, I decode it, trim a clip from it and then encode it to 4k resolution at 25 fps with its audio: ffmpeg -ss 0.5 -t 0.5 -i input_video1.mp4 -r 25 -vf scale=3840:2160 output_video1.mp4. I then take each of these videos and concatonate them together with the concat demuxer: ffmpeg -f concat -safe 0 -i cut_videos.txt -c copy -y output.mp4. I am taking …
Long video ffmpeg transcode makes audio go out of sync ...
https://video.stackexchange.com/questions/25149/long-video-ffmpeg-transcode-makes-audio-go-out-of-sync
The resampled.mkv has correct sync, but unfortunately the audio is shorter than the remaining video for a few seconds. Which means the problem is really that the frame rate is slightly slower than it should in the input file. According to my calculations, the problem is that the frame rate is set to 59.96, and setting it to exactly 60.0 would make the video match the audio. I tried using: …
FFMPEG Fix Audio Sync – Uly.me
https://uly.me/ffmpeg-fix-audio-sync/
If you have a video with audio sync issues, you can easily fix it using ffmpeg. It takes 2 inputs: the filename and delay: 0.100 is 100 ms or 0.1 seconds. Output file has -fixed appended to it. It’s fast. Only takes 2-3 seconds to process a 1.5 hour recording. Here’s the script.
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