[FFmpeg-user] Copying time stamp metadata
dopelabs at dubstep.fm
Wed Jul 25 14:32:51 EEST 2018
-c copy in command a), but not b)?
does this work?
c) fmpeg -i input.mkv -c copy -copyts -movflags +faststart output.mkv
> On Jul 24, 2018, at 8:06 42PM, Abhinav Kashyap <akashya at gmail.com> wrote:
> Replying back to myself.
> I am still not sure if copy is the correct approach or map ? Any
> suggestions ?
> On Mon, Jul 23, 2018 at 10:56 AM, Abhinav Kashyap <akashya at gmail.com> wrote:
>> I am trying to find out how can I copy timestamp related metadata from a
>> file to another ?
>> My input file has UNIX timestamp (start time) which is what i need to
>> copy. Here is what I am doing or have tried:
>> 1) Read a video file frame by frame in OpenCV
>> 2) Modify frames (image processing such as Gaussian blurring or sharpening)
>> 3) Write back frames in a video using openCV. Written file has a start
>> time of 0.00 ms.
>> 4) Copy metadata from original file to modified file using below command :
>> a) ffmpeg -i input.mkv -c copy -movflags +faststart output.mkv - This
>> copies bunch of metadata but not the start time which is what I am after.
>> b) fmpeg -i input.mkv -copyts -movflags +faststart output.mkv - This
>> copies the video content as with all metadata including the start time.
>> Any ideas how can I copy just the start time from originial file to
>> modified file ?
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