0
votes
0answers
37 views

ffmpeg output does not play

I'm trying to transcode an uncompressed AVI ~27GB in size to an MP4. I'm using the following command: ffmpeg -i input.avi -c:v libx264 -preset slow -crf 20 -c:a copy output.mp4 The resultant MP4 ...
1
vote
0answers
38 views

Set ipad compatible thumbs for mp4 videos based on a frame of the video with command line

I have a directory of 100 mp4 files. All are working well on my ipad but most of them do not have a working thumb. I want to generate these thumbs with a command line command (on macosx) based on a ...
0
votes
0answers
183 views

Get original timecode from DV avi and use it with ffmpeg

With FFMPEG (on Ubuntu linux pc) I am trying to draw the original timecode from DV avi file (captured from miniDV cassette with EDIUS 4 and 5 in Windows) to an output mp4 file. For my script I need ...
0
votes
0answers
9 views

I need baseline preset in ffmpeg for Video file can play in iPhone [duplicate]

I need to encode a video file in MP4 using H.264 with profile baseline (for iPhones). I using ffmpeg. But, when I want to apply this preset, ffmpeg show me a error: preset baseline not found. So, I ...
0
votes
0answers
93 views

Where to start Transcoding with FFMPEG?

I would like to learn a lot about Transcoding video files with FFMPEG from any format to mp4 (hH264/AAC) format. We have a large repository of video files ranging from 1 MB to 2 GB of various formats ...
2
votes
1answer
4k views

How to force ffmpeg to insert keyframe at first frame when downsampling a framerate of a video with x264 vcodec

I have a mpeg4 video at 25fps. This video contains just one static frame. I'm trying to downsample the frame rate to 1fps and convert the video to x246 (mp4). I ran the following ffmpeg command: ...
4
votes
1answer
295 views

How to create a x264 (mp4) video with the smallest size using ffmpeg that has just 1 image through entire video?

I'm creating narrated mp4 (x264+aac) videos for books. Each video has just the book's cover as the background. I wonder what would be the most effective way to create such videos with ffmpeg? I've ...