2 juillet

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:29
  Using FFMPEG to join two MTS files together - Reado Newest 'ffmpeg' Questions - Stack Overflow
  I have two MTS video files, each one 2 minutes long. I need to be able to join the files together and convert the format to MPEG4. I have a suitable command line for converting MTS to MP4 but don't know how to join the files together in the first place. Some articles on the web suggest using the CAT command, like: cat video1.mts video2.mts > whole_video.mts However this doesn't work and according to FFMPEG, "whole_video.mts" is only 2 minutes long, not 4 minutes. Does anyone know how to join the files together? Is FFMPEG the best (...)
• 14:49
  Use FFmpeg to create MPEG-DASH files - angel_30 Newest 'ffmpeg' Questions - Stack Overflow
  I know using ffmpeg, we can create MPEG-DASH ready files, including the segments and the .mpd manifest file. For instance, I'm trying this command which works: ffmpeg -re -i .\\video-h264.mkv -map 0 -map 0 -c:a aac -c:v libx264 -b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline -profile:v:0 main -bf 1 -keyint_min 120 -g 120 -sc_threshold 0 -b_strategy 0 -ar:a:1 22050 -use_timeline 1 -use_template 1 -window_size 5 -adaptation_sets "id=0,streams=v id=1,streams=a" -f dash out.mpd But I don't want to segment the video- so a simpler version where we have (...)
• 01:30
  Randomly extract video frames from multiple files - PatraoPedro Newest 'ffmpeg' Questions - Stack Overflow
  Basically I have a folder with hundreds of video files(*.avi) each one with more or less an hour long. What I would like to achieve is a piece of code that could go through each one of those videos and randomly select two or three frames from each file and then stitch it back together or in alternative save the frames in a folder as jpegs. Initially I thought I could do this using R but quickly I've realised that I would need something else possible working together with R. Is it possible to call FFMPEG from R to do the task (...)

1er juillet

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:43
  ffmpeg create blank screen with text video - kalafun Newest 'ffmpeg' Questions - Stack Overflow
  I would like to create a video consisting of some text. The video will only be 0.5 seconds long. The background should just be some colour, I am able to create such video from a photo, but cant find anywhere how this could be done without a photo, just using text to create such video.
• 23:02
  UserWarning: x bytes wanted but 0 bytes read at frame index y (out of a total z frames), at time q sec. Using the last valid frame instead - Wiz Newest 'ffmpeg' Questions - Stack Overflow
  I have a script which subclips a larger video and then stitches needed parts together using concatenate and write video file in moviepy. But the problem is everytime i run the script i get the video but the audio is off sync, usually the audio starts normally, but over time becomes delayed. I suspect it is because i want to concatenate around 220 smaller mp4 videos into one big mp4 video, but every smaller clips receives the error:'UserWarning: In file test.mp4, 1555200 bytes wanted but 0 bytes read at frame index y (out of a total y+1 frames), at time x sec. Using the last (...)