0
votes
1answer
16 views
FFMPEG mp4 instead of flv
really struggling with ffmpeg at the moment, after a few days of messing about with it i have managed to get it to almost do what i want!
I have an audio track and a series of images that are to be ...
1
vote
0answers
17 views
Compiling x264 with mp4 support
I need x264 for my project.
I have one at /opt/local/bin/x264, but when I execute the following command:
x264 --qpfile cuepoints.qp --output output.mp4 input.mp4
it says:
x264 [error]: not ...
0
votes
2answers
76 views
Extracting one frame per minute with ffmpeg, and skip a few seconds
I'd like to extract one frame per minute from a video, starting from a specified offset. For example, say the offset is 00:01 (mm:ss), then I'd like to extract 00:01, 01:01, 02:01, and so on.
The ...
0
votes
1answer
51 views
Extracting frames with ffmpeg and including subtitles
I am attempting to extract a single frame from a video, with subtitles, using ffmpeg.
I built ffmpeg myself:
sircmpwn@picard ~/sources/bakabt-staging/hennkeo/groups $ ffmpeg
ffmpeg version ...
0
votes
0answers
23 views
Using jpegtran with ffmpeg via piping?
I use ffmpeg to generate a ton of jpeg images. However, these jpegs aren't optimized by ffmpeg. On average, the images losslessly compress another 10-20% when I run them through jpegtran.
I don't ...
1
vote
1answer
27 views
How do I determine if ffmpeg can handle file?
I have an application that splits video with ffmpeg.
In order to avoid errors, I would like to know if file selected by user is video or not.
Is there any ffmpeg command that would inform me whether ...
0
votes
0answers
22 views
How to use ffmpeg to concat mpeg4-aac mp4s?
I know that you can concat h264-aac mp4s using the following command:
ffmpeg -i INPUT.mp4 -codec copy -bsf:v h264_mp4toannexb OUTPUT.ts
(as per ...
0
votes
0answers
17 views
Preserve text readability while encoding game screencasts
I have a bunch of (almost lossless) 3d game screencasts which now occupy considerable amount of my hdd space. I would like to reduce their size. Overall image quality isn't of great concern, except ...
0
votes
1answer
24 views
FFMPEG converting media type aswell as relocating MOOV atom
I have found this line online
ffmpeg -i input.mp4 -c:a copy -c:v copy -movflags faststart output.mp4
Which takes an input, and copies the audio, video and sets the MOOV atom to the beginning in an ...
2
votes
0answers
67 views
+50
FFMPEG - Non-monotonous DTS
When I use FFMPEG to convert a video from MP4 to M3U8, using the following command,
ffmpeg -i op.mp4 -b:v 128k -flags -global_header -map 0:0 -map 0:1 -f segment -segment_time 4 -segment_list_size 0 ...
0
votes
1answer
53 views
Encoding video using Vp8 encoding scheme
Hi I want to encode raw(yuv) video to m4v using ffmpeg command in Vp8 encoding scheme, i try to use this command:
./ffmpeg -s 1280x720 -i raw.yuv -vcodec libvpx 1.m4v
but the error was :
Input ...
0
votes
1answer
49 views
Specify MPEG-4 as encoding parameter in FFmpeg
I want to ask about mpeg4 codec parameters. I use it to encode video in Evalvid environment as follows:
./ffmpeg -s cif -r 30 -b 64000 -bt 3200 -g 30 -i raw.yuv -vcodec mpeg4 vid.m4v
The video will ...
1
vote
1answer
46 views
How can I use FFmpeg to add a ticker/varying text to live video?
I am able to add text to a video on my hard disk, before I braodcast it...by
using the command.
ffmpeg -y -i IMG_0696.MOV -acodec libmp3lame -vcodec msmpeg4 \
-b:a 192k -b:v 1000k -ar 44100 \
-vf ...
3
votes
2answers
65 views
FFMPEG extract intra-frames I,P,B frames
Is there a way to extract the intra-frames and preserve them as-is from FFMPEG or similar program? I know you can extract frames to a sequence of JPEG images using -f image2. But those are full images ...
1
vote
1answer
35 views
Optimum parameters for audio slicing using FFMpeg
I am planning to use Perl to extract audio from media files through FFMpeg. Now as far as I know, FFMpeg needs lot of parameters like bit-rate, etc which it used to extract the audio. So for one ...
2
votes
1answer
70 views
Pipe VLC output to ffplay?
I have a (broken) PC, where VLC plays videos on only the left half the screen, which seems related to OpenGL/drivers (see here). On the other hand, ffplay doesn't have the half-window problem, but can ...
1
vote
0answers
27 views
How to encode a video with timestamps in order to have audio/video sync
DISCLAIMER: I am unfortunately very new to codecs and using FFMPEG, so I apologize for any incorrect terminology or if this is in actuality a very easily resolved question.
I have a sequence of jpeg ...
0
votes
0answers
64 views
Convert stream file (mux) to mp4 gstreamer
I used a program to capture my screen (called Kazam for linux). My computer crashed and I lost my screen capture which I cannot recreate.
I found two files that seem to hold my video, a .mux and ...
0
votes
1answer
39 views
ffmpeg video with watermark and subtitle at same time
Hi I want to add watermark png image to video with hardcode substitle .srt file at same time what changes i should do the to following line
ffmpeg -i input.mkv -threads 0 -c:v libx264 -crf 28 -preset ...
0
votes
1answer
44 views
ffmpeg stopped when set “-i” option with rtsp URL
I am using ffmpeg on Ubuntu 12.4 to get thumbnails from RTSP URL.
I confirmed with vlc that this URL is fine,
Video file played nicely.
The problem is ffmpeg.
I command like
ffmpeg -itsoffset ...
0
votes
1answer
83 views
Why some videos play only in a particular media player?
Our client sent us a couple of videos files for audio transcription work. They said that we should use Player Microsoft application 4.8.0.0 to properly run the two files [right clicking these files, ...
0
votes
1answer
48 views
Converting with ffmpeg a .mov to uncompressed .avi results in a black screen in virtualdub
I am trying to convert a .mov to an uncompressed .avi with ffmpeg. As I want no quality loss, I am using the following ffmpeg command:
ffmpeg -i toto.mov -vcodec copy -y toto.avi
The convertion ...
1
vote
1answer
82 views
Can ImageMagick make thumbnails from video?
I'm trying to extract thumbnails from video via ImageMagick. I found some samples from their official site, but it makes GIF, not PNG. I want a solid thumbnail though.
Can it create the same output ...
1
vote
2answers
126 views
How do I concatenate Android (3GP4) 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
0answers
42 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 ...
2
votes
1answer
1k 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 ...
2
votes
1answer
146 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
1answer
52 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, ...
0
votes
0answers
35 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 ...
1
vote
0answers
21 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
74 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
1answer
55 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
83 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 ...
1
vote
0answers
122 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 ...
2
votes
0answers
107 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
60 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 ...
0
votes
1answer
73 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 ...
1
vote
0answers
36 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 ...
0
votes
1answer
80 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
88 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 ...
1
vote
0answers
18 views
Copying 2YUV Video Streams in FFmpeg
I have noticed that when I copy 2vuy video streams with FFmpeg, the files are different in Quicktime. I am using the below command:
ffmpeg -i infile.mov -vcodec copy -acodec copy outfile.mov
In ...
1
vote
1answer
128 views
ffmpeg Issue With setpts/asetpts and/or select/aselect
As a follow-up to this question I'm now fighting with the synchronous editing of the video and audio.
I still try to cut the video by frames. While the resulting timestamps seem to be correct on the ...
1
vote
0answers
53 views
opensource vp6a encoding
I am looking for a way to encode a movie with vp6a. I was hoping I would be able to do this with ffmpeg using this command:
ffmpeg -i test.flv -loop 1 -i bg.tga -vcodec vp6a -vframes 1037 -b:v 1024k ...
1
vote
1answer
68 views
FFMPEG keeps converting without stopping
I have a web application that converts videos and splits them using FFMPEG. It was working fine until recently I noticed that the videos were taking much more time converting than they are supposed ...
1
vote
1answer
56 views
Can't type in CLI after running ffmpeg
I get a strange behaviour after running ffmpeg in console and piping its output to mplayer. After I close mplayer's window or I close ffmpeg with Ctrl+C sometimes I can't type anything in that console ...
4
votes
2answers
237 views
Drop every even or odd frames using FFmpeg?
Is there an accurate way to take raw video and extract from it a new video that contains only odd frames or even frames (by choice)?
For example:
I have "blah.yuv" with 400 frames (0-399).
I want to ...
0
votes
0answers
138 views
What are the correct options to use to verify video files using ffmpeg.exe in Windows 7?
I have thousands of video files to check/verify if they have an error or a warning. A firm just digitized them over old tapes (VHS, Umatic ...) All these videos are in mp4 format and i want to check ...
0
votes
0answers
56 views
dynamic ffserver authentication
Ideally I'd like to just be able to add/remove a list of session keys to/from a text file stored on the server without restarting the ffserver instance, but am open to other solutions such as proxies ...
1
vote
1answer
147 views
Number of stream maps must match number of output streams running ffmpeg
Trying to cut a fragment from MKV video, but getting an error.
What can be a reason?
V:\VIDEO>ffmpeg -ss 00:42:35 -t 00:43:05 -i smenia.mkv -map 0:0 -map 0:1 -vcodec copy -acodec copy ...
3
votes
1answer
175 views
How do you combine multiple ffserver streams into a grid in real time?
I'm trying to set up a CCTV system with ffmpeg/ffserver/zoneminder and want a nice looking 4x4 grid without all the Java applet borders and window dongles on it, just a full screen 4x4 grid. I've ...
