Media tool with support for multiple codecs, filters, and containers. Include the full, uncut console output if you have problems with an FFmpeg command.
0
votes
2answers
37 views
Concatenating videos using FFMPEG
I have FFMPEG installed on my CentoS 6 x64 system:
FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
...
1
vote
1answer
29 views
Set MP4 thumbnail
With
AtomicParsley,
you can set the thumbnail that will be displayed when you look at the file in a file explorer. Example commands
$ atomicparsley infile.mp4 --artwork infile.png
$ atomicparsley ...
1
vote
0answers
18 views
How do I create a streamable and seekable MP4?
I want to create an MP4 that supports seeking and streaming. DASH appears to be what I want except that the segment seek points are stored in an external file (the MPD) which doesn't work for my ...
1
vote
1answer
25 views
Avconv Can not resample 6 channels
I'm getting a message, that it cannot resample 6 channels into 2 channel audio. This is the command i'm using to convert into h.264+aac:
avconv -i ...
0
votes
1answer
71 views
VP9 encoding using FFmpeg
I want to ask if ffmpeg supports VP9 encoding, and if not: how can I encode VP9 videos?
I try using the command:
./ffmpeg-vp9 -y -i /home/mc/test.mkv -t 00:00:30 -c:v libvpx-vp9 -strict -2 -quality ...
0
votes
0answers
21 views
Media Player Classic Home Cinema stops on MKV
Media Player Classic Home Cinema stops on MKV. It goes to "stop" mode after file open. Unable to run playing. No error messages generated.
MPC-HC version: 1.6.7.7114 (9eb64ec) 64 bit
Compiler ...
2
votes
1answer
61 views
Converting RGB images into lossless video with avconv / ffmpeg
I am trying to convert a series of PNG24 images containing a screen animation to a lossless video, so that every pixel is reproduced exactly as it was in the original. But avconv (and ffmpeg) both ...
0
votes
3answers
34 views
Error when running ffmpeg on linux
I'm developing on a windows machine and was successfully using the following code for checking videos:
ffmpeg -v error -i $file_path -f null - 2>&1
After deploying it to linux, I'm getting ...
0
votes
0answers
20 views
ffmpeg/avconv getting file reports in time not offset
Using the advice from another superuser question I'm using the following to check video files for errors:
avconv -v error -i myfile -f null -
Unfortunately, this gives me an error in this format:
...
0
votes
1answer
40 views
Video processing to support different web players and qualities
I am trying to accomplish something similar to YouTube player. The biggest issue I'm facing now is how should I process user uploaded video files.
For example, since I want to switch between 240p, ...
2
votes
1answer
59 views
What lossy audio formats are more (or less) “efficient”? [closed]
This question is related to the answers I got to this question.
The bitrate-efficient format (see the question's most voted answers and their comments thereunder) would be one that assures a good ...
1
vote
1answer
31 views
ffmpeg error using Fade Seconds
I'm trying to fade a video clip in and out with a duration of a few seconds, and ffmpeg seemed like the best way.
The documentation mentions a fade option, and I have it working with a time in frames, ...
1
vote
1answer
58 views
How to use ffmpeg to downmix 5.1 DTS HD MA or Dolby TrueHD to stereo AAC with Dolby Pro Logic II?
I'm creating audio tracks from movies that can be played on Apple TV and iOS devices. Handbrake could downmix 5.1 audio to stereo with Pro Logic II matrix encoding. How can I do that with ffmpeg?
I ...
1
vote
0answers
103 views
Cutting at key frames with H.264 and FFmpeg
I have videos generated with Flash Media Encoder and the VP6 codec.
I'm able to edit these videos manipulating their tags with .NET, but I can only cut between key frames. I want a more precise ...
0
votes
2answers
28 views
How do I properly format a request for ffmpeg to decode using a particular codec?
r3d is listed as a supported codec for decoding, however when I attempt to specify the r3d decoder, I get the error message "Unknown decoder". What is the correct manner of specifying a decoder codec?
...
1
vote
0answers
48 views
mix audio with h264 mp4 video with ffmpeg
I have 2 files :
Input #0, wav, from '105426_1.wav':
Duration: 00:00:09.98, bitrate: 1312 kb/s
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 41000 Hz, stereo, s16, 1312 kb/s
and:
...
1
vote
0answers
39 views
extracting mp3 audio from mp4: audio longer than video?
I have an mp4 video that has no audio/video sync issue. I tried to extract audio to an mp3 file, following the suggestion in this thread: Extracting audio from MP4 video into MP3
ffmpeg -i ...
0
votes
0answers
24 views
FFmpeg. Generating .ts files and adding metadata to them
Before I was following the steps:
Create some metadata:
id3taggenerator -o 1.id3 -artist "Emma Stone"
id3taggenerator -o 2.id3 -artist "Patricia Clarkson"
Create a file saying where to place the ...
0
votes
0answers
24 views
cut the first and last half-second of audio files (using only ffmpeg)
I need to cut the first and the last half-second of some audio files.
I need to use ffmpeg (because I know that it works well and I know the command for the right encoding and I have installed it on ...
0
votes
1answer
88 views
How do I merge a folder of PNG images to a mp4 movie using avconv?
I have a folder containing many time stamped PNG images which I'd like to merge to a short movie. The contents of that directory looks like this:
└── images
├── img_20130421_115547.png
├── ...
1
vote
0answers
14 views
No video is written in for some part of video as the segmentation from FFmpeg
I am segmenting a 20 minutes long video to hundreds of small clips . The command is like
ffmpeg\\ffmpeg -i nx_1.avi -ss 399.37 -t 1 ka1_2.avi
The ffmpeg is in a subfolder.
It works very well for ...
0
votes
1answer
36 views
Concat videos with ffmpeg does not work
I'm currently trying to concat 3 Videos which don't have a audio stream and adding a audio file in the same step.
I created this command which should do the work:
ffmpeg -y -r 30 -i data\intro.mp4 ...
2
votes
0answers
31 views
optimise FFMPEG live stream THUMBNAIL
After testing many possibilities, I have a perfect command line for creating thumbnails from a live stream:
ffmpeg -i rtmp://srvIp/h264.stream -r 1 -an -updatefirst 1 -y thumbnail.jpg
It refreshes a ...
1
vote
0answers
30 views
FFmpeg/avconv and UDP - connect listener after sender?
I'm trying to troubleshoot a port binding issue in avconv/FFmpeg. I have two test commands; one which sends an audio stream over UDP:
avconv -i test.wav ...
0
votes
2answers
66 views
Streaming live video over private wifi to iPhone for the hearing impaired
I am researching a project for a theatre company that would like to offer its visitors a live video of sign language, streamed to their smartphones (ex. iPhone in this case) during a show for the ...
1
vote
0answers
32 views
FFmpeg/avconv - non-blocking live audio input?
I'm using avconv/FFmpeg to parse a video feed and an audio feed into a broadcast stream. Currently, it gets its audio information via UDP with the options -f wav -ac 1 -i udp://localhost:6613, since ...
2
votes
1answer
40 views
Add audio to video using ffmpeg
I'm trying to add sound to a video using ffmpeg, but for some reason, when I play the resulting file, it doesn't have any sound. I also tried doing it with an aac audio file, as well as leaving out ...
2
votes
2answers
50 views
Video encoding application for a two-processor, 16 core system
I need to perform some video encoding, but most of the applications (or settings) that I've used will not take full advantage of my workstation.
I'm using two Xeon processors, 8 cores per processor ...
3
votes
1answer
46 views
Improving ffmpeg performance on older i5 windows machine
I'm saddled with using ffmpeg for some video conversion on an older windows box. Unfortunately my app crawls to a halt whenever ffmpeg is running.
Can any ffmpeg experts suggest any performance tips ...
1
vote
0answers
69 views
Simplest video grab from webcam: how to
On Raspbery Pi's Raspbian (based on Debian Wheezy) I'm trying to make a simplest video grab from a Logitech C910 webcam to a video file via ffmpeg/avconv.
I say:
$ avconv -t 5 -f video4linux2 -s ...
1
vote
0answers
37 views
How to append 2 video files
Is there any way to append one video file to another ?
I've got a very large file (2GB) to which I'm trying to append some tiny files (~4MB). They all are in the same format.
It's easy to concat ...
2
votes
0answers
66 views
Converting series of images with ffmpeg results in black video
I've just downloaded ffmpeg since it seems to perfectly match my needs (make a video from a set of pictures). I'm currently playing around with some examples just to get started and there's something ...
1
vote
1answer
42 views
Can I make ffmpeg stop if integrity check encounters an error?
Is there a way to stop ffmpeg from processing if an error was encountered? I'm using ffmpeg to check video integrity by using:
ffmpeg -v error -i file.avi -f null - 2>error.log
However, I'd ...
1
vote
1answer
45 views
ffmpeg drawtext initialization error
I'm trying to convert an image sequence to a video file with some text overlay(eventually frame counter).
The command I am using
ffmpeg -r 24 -y -i mambo_%05d.png -i ..\3DW_Mambo.wav \
-vf ...
0
votes
2answers
81 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 ...
1
vote
2answers
86 views
Concatenate multiple WAV files using single command, without extra file
I want to concatenate multiple WAV files into a single WAV file using FFMPEG.
I have used the following command and it generates the required file.
Command:
ffmpeg -f concat -i mylist.txt -c copy ...
0
votes
1answer
53 views
Proper FFmpeg code to convert AVCHD 1080i Format to WMV files
Proper FFmpeg code to convert AVCHD 1080i Format to WMV files.
The image size of the input file is 1440 x 1080 and I would like to keep it in HD if at all possible as I am going to make DVDs from ...
0
votes
2answers
97 views
Re-stream/Mirror HTTP Live Stream
I need to re-stream/mirror some HLS’s (HTTP Live Stream) using a Linux server.
From input
http://anystream.com/channel1.m3u8
To output
http://127.0.0.1/abc.m3u8
I found several media servers ...
0
votes
0answers
24 views
Dynamically change FFmpeg streaming parameters
I use FFmpeg to stream my desktop and camera. It works fine, but I want to change FPS and quality during streaming. Of course, I can restart my stream with new parameters, but it would delay. So I ...
0
votes
0answers
72 views
getting following error while installing ffmpeg-php on PHP v5.4.14 / CentOS 5.9
Having trouble installing ffmpg-php on centos, SSH shows following error after commands:
./configure
make
make install
.....
/usr/local/src/ffmpeg-php-0.6.0/ffmpeg_movie.c:1215: warning: ...
1
vote
0answers
34 views
Applying multiple filters at once in ffmpeg
I have a video that I am trying to apply two filters to. I want to rotate the video 90 degrees clockwise followed by scaling it down from 1280 x 720 to 720 x 576 with letterboxing.
I also want to ...
4
votes
1answer
182 views
How to properly concaternate two audio files together?
I ripped two Blu-rays and I'm trying to combine the audio from both into one file. I've decoded it from DTS-HD MA to Wave64, and I used avisynth to remove the black screen audio (4 seconds) from the ...
1
vote
2answers
97 views
ffmpeg slideshow piping input and output for image stream
I am trying to make from a list of images a video and then I will directly upload it.
I have managed so far to create a video for the images with:
cat *.jpg | ffmpeg -r 1 -f image2pipe -vcodec mjpeg ...
1
vote
0answers
25 views
Can the frame size be cropped during decoding in FFMPEG?
I've followed Dranger's tutorial for displaying video using FFMPEG. http://dranger.com/ffmpeg/
avcodec_decode_video2 is the slowest process for decoding video. I will occasionally have two videos ...
0
votes
0answers
59 views
FFmpeg screencast: capture only one window
I'm using FFmpeg with UScreenCapture under Windows 7 for screencast. Everything works fine, but I want to stream video from only one window - not the whole monitor. I know, there is an opportunity to ...
0
votes
1answer
54 views
What's the meaning of ffmpeg's fps options?
I'm trying to catch some snapshots from a video. So I found this code in their official page:
ffmpeg -i myvideo.avi -f image2 -vf fps=fps=1/60 img%03d.jpg
but, I can not find any documentation ...
1
vote
1answer
75 views
Best ffmpeg flags to ensure the portability of a mix & transcode process
I am the maintainer of a software which use ffmpeg to automatically mix &
transcode two input stream into a single output with a video & audio track. I
am currently facing some portability ...
0
votes
1answer
73 views
How can I upgrade ffmpeg in CentOS 6.x
At first, I've downloaded ffmpeg 0.6.5. and it works. But when I'm trying to use '-vf' option, Terminal said there's no such command.
So I asked this on Super User and someone said that the cause is ...
0
votes
0answers
63 views
Converting G.722 audio files using ffmpeg
I have a G.722 RTP stream that was captured with Wireshark, and am trying to convert it to PCM using ffmpeg. I have done similar things with other codecs (like G.729), and the conversion works ...
3
votes
1answer
83 views
FFmpeg: can't capture audio from microphone
I use FFmpeg under Windows 7 to stream live video. There are no problems with the camera, but for some reason I can't capture sound from the microphone (I've tested it, it works fine).
I use the ...
