nsamachine.blogg.se - Accurately cut video ffmpeg

dest_file: Destination file (.

For more info, see Cutting small sections part of ffmpeg documentation. If you specify 60, it will cut 60 seconds of video start from time specified in -ss.

Use the bashscript of the hlsframeaccuratetrim dest_file Tin Tout src_file1, src_file2, …. DURATIONINSECONDS specify duration of new clip.

At the end of downloading process you will have all media files (.ts) in your local disc, see figure 1.

You can use this ruby gem or you can do it manually (downloading the manifest and media chunks).You can download the scripts from this link: 20140807_HLStrim_JCF_v1 Procedure I have developed and tested them in a virtual Ubuntu (14.04 TLS). To use these scripts you will need to install ffmpeg (v2.2+) and libxml2 (v20901+) (also known xmllint). To be able to do this the TS files shall be h264 baseline and they must start with an I frame (see the section: Known problems and future work). The purpose of these scripts is to perform a VERY FAST frame accuracy trimming to HLS streaming files (.TS: h264, aac), it only re-encodes the first and the last segment of whole stream. FFmpeg cropping example: crop 100×100 pixels in the upper right corner of the video. Crop a part 100x100 Pixels in the upper left corner (so x with y Yes 0 ),please use: ffmpeg -i input.mp4 -filter:v 'crop100:100:0:0' output.mp4.

To achieve that I developed a group of bash scripts that are able to trim a HLS stream using ffmpeg. FFmpeg cropping example: crop a 100×100 part from the top left of the video. The main idea of this post is to practise with ffmpeg and write down my experiences, issues that I have found, possible solutions, etc.