Linked Questions

1
vote
2answers
718 views

How to use ffmpeg to rip part of a VOB file

I want to convert a VOB file to another video format using ffmpeg. The video that I'm interested in is found in the first half of the VOB file. Is there a way to convert only the part that I'm ...
0
votes
2answers
493 views

Concat 2 .mp4 files created with ffmpeg not working correctly

I am trying to concat 2 mp4 files that were both created with ffmpeg however the resulting output file does not contain any audio, can someone please help? Here's my current code: function ...
0
votes
2answers
1k views

ffmpeg with 720p video and y4m file

I was simulating a lot of videos in cif format, also all videos came with yuv format file. I used the expression below and it works well: ffmpeg -s cif -r 30 -i video.yuv -vcodec mpeg4 -g 12 -bf 2 ...
0
votes
2answers
3k views

FFMPEG add keyframes without reencoding

How can I add keyframes for FLV files without reencoding? I try to use this command, but do nothing: ffmpeg -i file.flv -vcodec copy -acodec copy -g 0 -y tmp.flv && yamdi -i tmp.flv -o ...
0
votes
2answers
377 views

ffmpeg image2 avi quality

I'm converting a set of images to avi, but the quality is very poor. How can I change the quality of a video? This is my current command: ffmpeg -i music.wav -f image2 -r 11 -i %%d.png video.avi ...
18
votes
1answer
33k views

Converting FLV to MP4 Using FFMPEG and Preserving the Quality

Im trying to use ffmpeg to convert my flv files to mp4 to play them on iOS devices but the converted video has a much worse quality than the original one. Here is the command i use: ffmpeg -i ...
8
votes
1answer
6k views

What parameters should I be looking at to reduce the size of a .MOV file?

My Canon 60D creates .MOV files when recording video and I've found out that the .MOV container has an H264 video stream and a PCM audio stream. I've used ffmpeg and GSpot to look at some of my ...
4
votes
1answer
1k views

Why does the quality of this video suck when converted with ffmpeg as opposed to mencoder?

Here's the command line that I'm using for both and the output. Any ideas? The bitrate of the two videos is comparable: both around 1500Kbps. ffmpeg command: ffmpeg -y -i aud.mp4 -acodec copy -i ...
3
votes
1answer
1k views

FFmpeg command converting M4V to FLV; video streaming is very slow

I am using this command to convert videos from M4V and AVI to FLV: ffmpeg -i 'video_1355440448.m4v' -s '640x360' -ab '64k' -ar '44100' -q:v '1' -f 'flv' -y video_1355440448.flv I have two servers: ...
2
votes
1answer
1k views

streaming flv using ffserver

I'm running Debian for my home-server, which is a machine that lives under the telly in the living room and stores the family's photo's, videos, music, etc. I'm using all the usual services to serve ...
2
votes
1answer
941 views

LIBFAAC cannot resample channels

Im using avconv to convert video files into MP4, but whenever I try to encode files with 6 or 8 channels into 2 channels using libfaac I get these error messages: Can not resample 8 channels @ 44100 ...
1
vote
1answer
848 views

FFMPEG: Stream a file with original playing rate

I want to stream a file to the network using ffmpeg in it's original frame rate; so I can play the generated UDP stream using some receiver client such as VLC. I used this command: ffmpeg -i ...
1
vote
1answer
170 views

How do I convert an iPhone 720p video into a similar quality Flash video using ffmpeg?

What are the proper arguments to ffmpeg to covert an iPhone4 720p video into a similar quality Flash video? I tried the following which resulted in a low quality Flash video: ffmpeg -i movie.mov ...
1
vote
0answers
1k views

Failed to convert a wmv file to mp4 with ffmpeg

i need a help with this command FFMPEG COMMAND: ffmpeg -y -i /input.wmv -vcodec libx264 -acodec libfaac -ac 2 -bufsize 20M -sameq -f mp4 /output.mp4 Output: ffmpeg version 1.0 Copyright (c) ...
0
votes
0answers
27 views

FFmpeg for splitting files [duplicate]

Can FFmpeg be used to cut any video ? Right now I use the mkvmerge command for mkv and some other apps for other formats. If not, what can be used? (something in command prompt would be optimal) ...

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