Sur d’autres sites (4638)

• Unable to choose an output [closed]

  17 février 2024, par Xdangin

  I try to change the time for subtitle and every time this pop up on my face

  


  


  Unable to choose an output format for 'output-subfamily' ; use a standard extension for the filename or specify the format manually

  


  


  srry guys cuz I don't get it but I'm new at this

  


  here's the full log im case I wrote something wrong

  


  /sdcard $ ffmpeg -itsoffset 2 -i Family.Guy.S04E23.srt -c:v copy output-sub family guy.srt

ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers

  built with Android (10552028, +pgo, +bolt, +lto, -mlgo, based on r487747d) clang version 17.0.2 (https://android.googlesource.com/toolchain/llvm-project d9f89f4d16663d5012e5c09495f3b30ece3d2362)

  configuration: --arch=aarch64 --as=aarch64-linux-android-clang --cc=aarch64-linux-android-clang --cxx=aarch64-linux-android-clang++ --nm=llvm-nm --pkg-config=/home/builder/.termux-build/_cache/android-r26b-api-24-v1/bin/pkg-config --strip=llvm-strip --cross-prefix=aarch64-linux-android- --disable-indevs --disable-outdevs --enable-indev=lavfi --disable-static --disable-symver --enable-cross-compile --enable-gnutls --enable-gpl --enable-version3 --enable-jni --enable-lcms2 --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgme --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenmpt --enable-libopus --enable-librav1e --enable-libsoxr --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-mediacodec --enable-opencl --enable-shared --prefix=/data/data/com.termux/files/usr --target-os=android --extra-libs=-landroid-glob --disable-vulkan --enable-neon --disable-libfdk-aac

  libavutil      58. 29.100 / 58. 29.100

  libavcodec     60. 31.102 / 60. 31.102

  libavformat    60. 16.100 / 60. 16.100

  libavdevice    60.  3.100 / 60.  3.100

  libavfilter     9. 12.100 /  9. 12.100

  libswscale      7.  5.100 /  7.  5.100

  libswresample   4. 12.100 /  4. 12.100

  libpostproc    57.  3.100 / 57.  3.100

Input #0, srt, from 'Family.Guy.S04E23.srt':

  Duration: N/A, bitrate: N/A

  Stream #0:0: Subtitle: subrip

[AVFormatContext @ 0x75b7eb2500] Unable to choose an output format for 'output-sub'; use a standard extension for the filename or specify the format manually.

[out#0 @ 0x75b7e3e840] Error initializing the muxer for output-sub: Invalid argument

Error opening output file output-sub.

Error opening output files: Invalid argument

/sdcard $ ffmpeg -itsoffset 2 -i Family.Guy.S04E23.srt -c copy output-sub family guy.srt


  


  I searched YouTube but didn't find anything

  


• ffmpeg scheduled batch file exclusion list

  4 avril 2018, par MrZoops

  I have the following batch file created to run on a schedule. It will auto encode the audio to aac in my main media folder. Everything is working but now I need it to do 2 more things :

  -Delete the original upon completion
  
   Set it so that the next time it runs, it does not try to convert the already converted file.

  Is that possible ? How would that look ? Is there a way to "disregard" filenames with ’CONVERTED’ in them ?

  for /r "C:\Users\USER\Desktop\TEST" %%a in ("*.mkv") do ffmpeg -i "%%a" -vcodec copy -acodec aac -ac 2 -ab 256K %%~dpnaCONVERTED.mkv

• GoPro (MP4) video timestamp sync with precision of milliseconds

  3 février 2021, par Raphael Ottoni

  I need your help with a data sync problem... I m currently trying to sync my GoPro video with real world time (a.k.a my notebook). I manage to sync date and time of my notebook and my GoPro 3+ black perfectly. The problem is that when the GoPro save the files in disk it round up the milliseconds on the creation_time (the milliseconds is always 000000) . Thus, turning the perfect sync impossible. In attachment is a picture of the meta information (extracted by ffprobe) of the MP4 video.

  



  My question is : What I have to do, so the GoPro actually save the creation_time with precision of milliseconds ?

  



  Another small question : Looking at the attachment figure, we see the "timecode" which is a time synchronization data in the format of hours:minuts:seconds:frame. I was thinking that I could use the "frame" value to calculate the missing milliseconds value. If we take this attachment, as a example, we can see that the frame value is "36". Meaning that the millisecond that it started to record was the one associated with the 36th frame of the FPS (in this video : 60fps) value : Some thing like 1000/60 * 36 which is 600 milliseconds, thus the actual creation_time of this video would be : 2017-07-19T18:10:34.600

  



  Is this logic right ? it didn't work ! I don't know what else to do.

  



  P.S : I need this kind of time precision because I will sync the video frames with a external sensor data that is recorded at 11hz.

  



  Please Help

  



  

  



  update

  



  I forgot to mention, even if you check the original raw file information, inside the GoPro SSD card, using "stats" to read the creation time (see attachment) it still has the same timestamp without milliseconds.