1
vote
0answers
108 views

Why does FFmpeg segment_times create webm files with incorrect duration and start times?

I have a MOV file that I want to split into several smaller files (at certain timestamps in a comma-separated list). I'm simultaneously compressing the video into WEBM files. The command I'm using ...
0
votes
0answers
320 views

FFMPEG - Stream discovered after head already parsed

I am trying to live transcode an RTMP stream to another RTMP HLS stream using the following command: ffmpeg -re -i rtmp://localhost/videochat/testing -c:v libx264 -c:a:0 libfaac -b:a:0 480k -f flv ...
2
votes
1answer
209 views

Codec choice for non CPU-intensive video transcoding

I am trying to achieve real-time transcoding of mkv / H264 videos on a low-end (slow CPU) platform. Using the following command line as a testing harness: avconv -i test.mkv -c:v mjpeg -q:v 3 -c:a ...
0
votes
1answer
407 views

Crop video to custom resolution

I'm just looking for a simple application (preferably free but not necessarily) that allows me to crop a video to a custom resolution; obviously smaller than the original resolution. The application ...
2
votes
1answer
955 views

Transcode videos to webm with lossless compression

I am using GNU/Linux(Arch Linux), and i need to transcode some videos from .avi/.mov to .webm. I don't have the original file for most videos, only the "very compressed" .avi, and i can't loose any ...
3
votes
2answers
1k views

Which video format requires least transcoding for versatile media streaming

I know this question is related a bit to this here, but I have a more specific aim. I want to stream videos (in 1080p quality with multiple sound channels) to different devices (iOS, Xbox 360, PS3, ...
14
votes
4answers
2k views

Concatenating ogg video files from the command line

Okay. I've got a few ogg files I've created using a desktop recording tool. I've transcoded them using ffmpeg once (mainly to clip out the beginnings and the ends). Now, I have 3 such files which I ...
1
vote
3answers
2k views

MKV to MP4 transcoding script issues

Ok, this one has got me scratching my head - specially as I'm a scripting nOOb, and my *nix expeirence is basic to say the least. Summary Need to identify why the shell script for converting filers ...
0
votes
1answer
267 views

h264 Slideshow Maker

I've been using Windows Movie Maker to make slideshows with musical backdrops. The two problems are (A) the maximum output resolution is 640x480 and (B) it only exports in the WMV encoding. I would ...
1
vote
0answers
84 views

Transcoding with UVD?

Is there a way to use UVD for transcoding? E.g. for decoding video for recompression. I'm not looking for accelerating the actual encoding process, just the decoding. If it's not possible, than is it ...