Questions tagged [flv]

A video container for either H.264- or VP6-encoded video, created by Adobe for their Flash platform

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Recover FLV video with "packet mismatch error"

I have a Flash video (flv) that I like to convert to MP4, but it seems (partial) corrupt. What it is best way to recover a Flash video (FLV)? This particular video is a 3-hour long stream recorded in ...
MacFreek's user avatar
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Audio/video streaming is out of sync after a random period of time

I'm using the NodeMediaServer, a stream server developed in NodeJS, with FLV and FFmpeg, it work very well but after a random period of time the audio/video streaming is out of sync and I don't know ...
Ale7's user avatar
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Ffmpeg stream at the same time to youtube and twitch

I would like to stream my webcam to youtube and twitch in the same command line because the bandwidth to my camera is very narrow. I can stream either youtube or twitch using this command. How can ...
zarg404's user avatar
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Stream a video from FFmpeg to Wowza with subtitles

I need to stream a video with subtitles from FFmpeg to a Wowza server. What stream protocol and video format can I use? I was using the FLV video format on a RTMP stream but I think it does not ...
Jeankowkow's user avatar
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1 answer
316 views

how to overlay audio on video - .flv files

I have lecture videos in .flv format and its corresponding sound in another .flv format file. Is there a way to overlay the sound file onto the video and save it? Please advise.
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4k views

Can I mux H.265 into FLV by force?

We want to try H.265 encoded video stream, but the video cloud server vendor we are using only provides RTMP+FLV uploading port. I have made some search works, and it seems FLV do not officially ...
jiandingzhe's user avatar
2 votes
1 answer
2k views

Stream received doesn't have consistent video track

I'm streaming a video to a streaming engine (nginx-rtmp) using ffmpeg using the following command: ffmpeg -re -fflags +genpts -stream_loop -1 -i Sintel.mp4 -c copy -f flv rtmp://stream-engine/...
Pat-rice's user avatar
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How to resolve a video URL from a f4m manifest file?

I want to know the video URL that corresponds to the bitrate 364 in this f4m file: http://nicls1-lh.akamaihd.net/z/lst_1@26969/manifest.f4m?hdcore= How can I do that? Is there some software utility ...
ComputerUser's user avatar
1 vote
0 answers
959 views

Pipe audio from VLC to stdout?

I want VLC to play some video (from VLC), but have the audio be outputted to stdout or a file. Here's what I've been trying to do, but it obviously doesn't work. It's a FLV file btw: DISPLAY=:0 vlc -...
Chris Smith's user avatar
3 votes
2 answers
10k views

How can I generate thumbnail previews for FLV files on Mac?

Similar to this question, however, the answer will not work because it is suited for Windows 7. My initial thought was to just run the video on VLC and pause the video and then just Shift+Cmd+4 and ...
Jaken's user avatar
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2 answers
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FFMPEG "Past duration 0.xxxxxx too large"

I'm recording an HLS streaming and I would like to save in a FLV Container. My ffmpeg's cmd is: /.../recorder/class/ffmpeg-2.6.1-32bit-static/./ffmpeg -i http://server/url/playlist.m3u8 -b:a 128K -...
Tenaciousd93's user avatar
1 vote
1 answer
2k views

Unable to seek FLV video

I can not seek flv video downloaded by rtmpsuck. Tried MPlayer2 2.0-728-g2c378c7 and vlc (2.1.2-0-ga4c4876). $ mplayer2 video.flv MPlayer2 2.0-728-g2c378c7 (C) 2000-2012 MPlayer Team Playing video....
A.D.'s user avatar
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1 answer
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How can I convert videos for Sony Xperia U on my Linux box?

I would like to send a few videos for my girlfriend, but I would ensure they are playable on her mobile phone. I want to carry out the encoding tasks on my Arch Linux box, because my PC is a low end. ...
Konstantin's user avatar
6 votes
2 answers
14k views

Which FFmpeg command do I use to passthrough FLV to MP4?

I've a number of downloaded FLV files which I would like to convert to MP4. They are already in the correct format so I am told all I need to do is to remux the video and audio streams into an MP4 ...
user338034's user avatar
2 votes
2 answers
38k views

How can I stop having IE11 ask me if I want to save or open an .flv file?

I am working with 6 different video formats in IE11. If I try to directly open on of the other 5 (not .flv), either Windows Media Player or QuickTime will open up directly and play the video. For ....
demongolem's user avatar
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2 answers
248 views

Joining flv files produces much larger output

I have three flv files around 30 Mb each. I joined them together using mencoder on Linux with mencoder -forceidx -ovc copy -oac pcm -o output.flv input1.flv input2.flv input3.flv The video codec ...
To Do's user avatar
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2 votes
1 answer
3k views

MP4 takes too long to start

I'm converting my video to H.264 / MP4 with ffmpeg. I then move the moov atom to the start of the file with qt-faststart, so I can stream the video. Everything works fine with small videos of 5–10 ...
user2783132's user avatar
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1 vote
3 answers
15k views

FLV video has no sound, when played with mplayer, VLC refuses to play it at all

I have downloaded this video http://www.youtube.com/watch?v=CpznCSeqMxw as a flv file. When I now try to play it, mplayer says Audio: no sound and shows the video, but no sound (which is, why I have ...
erik's user avatar
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Convert 4K .mp4 to 4K .flv possible?

Whats the best way to convert a 4K h.264 encoded mp4 video to a 4k resolution .flv? Is it even possible? Are there size constraints on the .flv format?
user2005121's user avatar
4 votes
1 answer
5k views

How to play (sound of) flv files in Foobar2000?

Given that Foobar2000 is one of the best audio players and that there are a lot of flv files out there that are in fact mostly sound, and that Foobar already can play sound from mp4 and webm video, ...
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1 vote
1 answer
5k views

ffmpeg stops streaming after 900 seconds from Axis Camera to FLV RTMP

Audio and video works for 900 seconds and then, ffmpeg stops with: video:1889kB audio:1825kB global headers:0kB muxing overhead 2.162866% I stream from an AXIS IP camera through ffmpeg over nginx. ...
AcsChristoph's user avatar
1 vote
1 answer
1k views

Duration of FLV files

On windows, I can usually see the total duration of multiple video files of formats like (.avi, .wmv) under properties dialogue. But I cannot see the duration of all the FLV files this way. I have ...
cpx's user avatar
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1 vote
1 answer
3k views

Copied FLV file with FFMPEG won't open in any program except VLC

I am trying to add an overlay to a FLV file fetched from YouTube. The input file is 4.4MB and playable by QuickTime so it doesn't appear to have any issues. ffmpeg -i input.flv -vf drawtext="...
danronmoon's user avatar
3 votes
2 answers
14k 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 out....
Zoltán's user avatar
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1 answer
758 views

view video bitrate of a flv file in linux,how?

Is there any command to check the video bitrate of a flv file in debian/ubuntu ? I have some flv files and I want to find out their video bitrate. I check 'file' command It only says 'Macromedia ...
hd.'s user avatar
  • 123
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1 answer
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FFmpeg can't convert MOV to FLV

When i try to convert a .mov file to .flv i get this type of output. I get error Invalid sample format '(null)' Error opening filters!. When I convert .avi or .mp4 I get no errors. I'm on ...
5et's user avatar
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2 votes
1 answer
1k views

How can I remux FLV movies from YouTube (e.g. into MKV)?

For some obscure reason, I have some video files I downloaded from YouTube as FLV rather than in another format. I would like to re-mux them into, say, MKV (Matroska). When trying to use ffmpeg, I get ...
einpoklum's user avatar
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10 votes
4 answers
115k views

Which is better between a .flv and a .mp4 video files with same encoding?

There is a server from which I can download videos, and I can choose if I want .flv or .mp4. The encoding is the same: -> FLV Flash Video 1 video stream: 640*360 (16:9), at 25,000 fps, AVC (...
Oriol's user avatar
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3 votes
1 answer
2k 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: ...
Pradeep Singh's user avatar
4 votes
1 answer
2k views

How to merge video flv and audio wav file in ffmpeg

I want to merge an audio .wav with a video .flv using ffmpeg Please suggest me how to achieve this. i am using this command on ubuntu 12 : ffmpeg -i recod_audio.wav -i recod_ideo.flv -acodec ...
ρяσѕρєя K's user avatar
1 vote
1 answer
4k views

How to create thumbnail image from .flv video by using ffmpeg ?

I am using following command to create thumbnail image from flv video , image is created but with error (image doesn't open) ffmpeg -ss 00:00:10 -i output.mp4 -f image2 -s 150x150 -vframes 1 -c:v ...
Shishir Mudliyar's user avatar
1 vote
1 answer
4k views

Why can't I convert FLV to MP4 format using FFmpeg when MP3 works?

In fact I have succeeded to convert FLV to MP3: D:\tmp\ffmpeg-20121005-git-d9dfe9a-win64-static\ffmpeg-20121005-git-d9dfe9a-win 4-static\bin>ffmpeg.exe -i a.flv -acodec mp3 a.mp3 ffmpeg version N-...
hugemeow's user avatar
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0 votes
1 answer
726 views

Fix unkown FLV meta tag

I downloaded a 230 MB file that I know the length of (40 min), but it only played for 22 min, then it exited. When I checked it with flvmeta it gave me an error about an unkown tag. How can I fix it?...
user1515425's user avatar
-1 votes
1 answer
2k views

Codec or player for FLV files [closed]

I have many FLV files and when I play them using Windows Media Player or GOM and try to click on the bar to advance to another part of the video, I find the video pausing for a long time before it ...
zac's user avatar
  • 911
0 votes
1 answer
58k views

How to make Google Chrome download FLV instead of stream it? [duplicate]

Possible Duplicate: How to download a video file in Google Chrome When I open FLV file links in Chrome, it tries to stream it instead of prompting me to download. How do I make it so that when I ...
Propeller's user avatar
  • 1,195
15 votes
3 answers
17k views

How to concatenate two flv files?

I want to concatenate two flv files(downloaded from Youtube.com) by Linux command line tools. The ffmpeg tutorial is too complicated, so I tried the mencode tutorial. But I get a empty output. I don't ...
kev's user avatar
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3 votes
2 answers
9k views

ffmpeg: Pipe input error

I'm facing an issue while working with ffmpeg when input and output are pipes. Though Output pipe is working fine, piping the input is causing some error. I tried to convert mp4 video to flv using ...
Amit Khanna's user avatar
21 votes
4 answers
108k views

How can I generate thumbnail previews for FLV files in Windows 7?

Is there a way to add the ability to show previews of FLV files in Windows Explorer under Windows 7?
Stephen's user avatar
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0 answers
212 views

Seeing part of a clip before it fully downloaded

Is there any way to see the part that been downloded of a clip (wmv, flv..etc) from any download site like mediafire.. I mean to see the clip before it fully downloaded.
Adban's user avatar
  • 245
1 vote
3 answers
2k views

Converting a .FLV into a .AVI / .MP4 [duplicate]

Possible Duplicate: How do you convert FLV file format to a format that Picasa recognizes (e.g. AVI, MPEG, WMV)? Well i've been looking around google for hours trying to find a way on how to ...
Kazuma's user avatar
  • 113
2 votes
2 answers
5k views

.flv videos only play audio without image

I downloaded a pack of about 50 .flv videos, most work just fine on any software that plays .flv, but some only play audio without video. I use Ubuntu 10.04 as main OS but also tried on Windows and ...
Tubes -'s user avatar
  • 21
23 votes
2 answers
53k views

What do the numbers 240 and 360 mean when downloading video? How can I tell which video is more compressed?

I have downloaded some computer science lectures from YouTube recently. There is usually more than one choice of file size and file format to download. I noticed that for the same video, the ...
DaMing's user avatar
  • 233
1 vote
1 answer
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Is there a Windows app that can do FLV playlists?

Does anyone know of a Windows software that can do FLV playlists? In other words, you'd load a bunch of FLV files and have them play one after another.
Alex's user avatar
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2 votes
1 answer
500 views

What's wrong with .flv file?

I have .flv file which has a pretty long runtime. But VLC player indicates runtime as 48 min. (in reality it's more than 2 hours) The questions: What is the maximum runtime for .flv file? What ...
DrStrangeLove's user avatar
3 votes
2 answers
4k views

How can I download Silverlight videos and convert to FLV format?

Is there any way to download Silverlight videos and convert them into FLV format?
Larry Morries's user avatar
0 votes
1 answer
25k views

MP4 and FLV formats, which one is smaller for the same video? [closed]

Is an MP4 file for a video smaller or larger than that of a FLV format?
Shamim Hafiz - MSFT's user avatar
5 votes
1 answer
3k views

How to load FLV in AviSynth?

How do i load an FLV in AviSynth. The standard: DirectShowSource("2011 Visa Championships.flv") fails with: Video returned: "DirectShowSource: couldn't open file 2011 Visa Championships.flv: ...
Ian Boyd's user avatar
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0 votes
1 answer
6k views

.avi to .flv through ffmpeg

When I try to convert avi to flv, I always get gritty and pixelated output flv videos of size that are 1/4 of the the input avi videos were. The current set of parameters I use is ffmpeg -i input.avi ...
ExitFailure's user avatar
0 votes
1 answer
2k views

ffmpeg multi convert videos and put them in the same path

I am using FFMPEG for converting from MOV to FLV on Ubuntu. My problem is I have 10 folders and sub folders that contains those videos, I want a command line or a way in WinFF GUI to convert them all ...
user avatar
0 votes
1 answer
1k views

Batch Edit Keyframe Metadata FLV Recorded Stream Video

I recorded an FLV stream, but the resulting video has an awkward metadata quirk that prevents successful conversion to other formats. Here is a snapshot of the keyframes at the beginning of the FLV as ...
Alan Turing's user avatar