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TOPIC: Can we get .flv and .mp4 support?

Can we get .flv and .mp4 support? 4 months, 1 week ago #168945

  • Testnick
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Isn't this software used in cinematic productions? Why is it not supporting these main formats?

Re: Can we get .flv and .mp4 support? 4 months, 1 week ago #168947

  • Tamerlin
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Because they're not main formats.

Re: Can we get .flv and .mp4 support? 4 months, 1 week ago #168949

  • Testnick
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But mainly used by anyone that streams.

Re: Can we get .flv and .mp4 support? 4 months, 1 week ago #168950

  • hugly
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Hello and welcome!

First, flv and mp4 are truly not formats used for cinematic productions.

FLV is a format neither supported on import nor on export currentyl, but it's easily convertible to supported formats with third party software.

MP4 container is a supported format, but it might contain video or audio streams which are not well suitable for video editing. Also in this case, converting should fix potential problems reliably.

More information is needed to understand the nature of your problem

Please post your computer details (OS version, CPU, RAM, GPU, HDD) and a Mediainfo report of one MP4 file which makes problems. Here you'll find directions: www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=66072&Itemid=81

Do you see any error message when importing MP4 (not flv, that isn't supported anyway)?
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Re: Can we get .flv and .mp4 support? 4 months, 1 week ago #169088

  • arniepix
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flv is what you might call a "legacy" format, meaning it's no longer actively used by the vast majority of people. Even Adobe is no longer supporting flv for export.

I had to install an older version of After Effects just to be able to export flv for the one client I have that occasionally needs it.
post production is not an afterthought!

Re: Can we get .flv and .mp4 support? 4 months, 1 week ago #169096

  • David Rasberry
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There are over 200 different video codec formats supported in the .MP4 container. These can range from high bandwidth deep color 4:4:4 intraframe formats with very low compression good for broadcast and cinema production (very large files) to extremely low bandwidth, highly compressed 4:2:0 long GOP codecs intended only for web streaming (very small files).
The very low bandwidth streaming codecs are not editing friendly at all and can cause multiple problems in all of the pro NLE's.
Lightworks is pickier than most about preferring very high quality low compression video formats for editing.
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Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170167

  • MarLondon
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Many people make long sessions of high quality gaming recording (for youtube, twitch and other platforms) using OBS on flv format, because if you have a problem into your computer recording, an mp4 corrupted is difficult to recover otherwise an flv is not corruptible.
So if Lightworks is "The professional editor for everyone", should think about flv support because this is the trend nowadays.
Hi hugly, can you advise a good third party software to change flv into MP4 without so much quality loss? Now I started to edit an flv (22 GB 1080p 60fps the standard on youtube/twitch gamers) and "surprise" I can't import it on Lightworks Professional!
Last Edit: 3 months, 2 weeks ago by MarLondon.

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170168

  • hugly
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Zero quality loss when remuxing with ffmpeg, but it depends on your track layout, and if you've recorded in variable frame rate mode I would convert and not remux.

Please post mediainfo.

By the way, I doubt seriously that flv is not corruptible.
It's better to travel well than to arrive...
Last Edit: 3 months, 2 weeks ago by hugly.

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170169

  • MarLondon
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Flv is not corruptible for an accidental crash stop recording, flv works perfect. This is why is used also on streaming I think.
I don't know now the OBS recording settings.
Follows the mediainfo:


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Last Edit: 3 months, 2 weeks ago by MarLondon.

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170170

  • briandrys
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MarLondon wrote:

So if Lightworks is "The professional editor for everyone", should think about flv support because this is the trend nowadays.


No professional NLE supports flv (not even Adobe Premier Pro), you have to convert it to a supported codec. Handbrake will convert to mp4.

I gather that: "In July 2017, Adobe announced that it would declare Flash to be end-of-life in 2020" en.wikipedia.org/wiki/Adobe_Flash

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170171

  • MarLondon
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briandrys wrote:
MarLondon wrote:

So if Lightworks is "The professional editor for everyone", should think about flv support because this is the trend nowadays.


No professional NLE supports flv (not even Adobe Premier Pro), you have to convert it to a supported codec. Handbrake will convert to mp4.

I gather that: "In July 2017, Adobe announced that it would declare Flash to be end-of-life in 2020" en.wikipedia.org/wiki/Adobe_Flash


Of course! I meant... Why don't be the first one?

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170172

  • hugly
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Thanks for mediainfo.

Unfortunately, very difficult to read - tabs seem to be replaced with line feeds - first time I see that here. Could you please zip the text file saved out of Mediainfo and attach it to your response.
It's better to travel well than to arrive...
Last Edit: 3 months, 2 weeks ago by hugly.

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170173

  • MarLondon
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Ok, sorry I did a quick reply and I didn't find the file attach.
The zip file is attached and I put the screenshot yet.

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Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170174

  • briandrys
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MarLondon wrote:

Of course! I meant... Why don't be the first one?


There is specialist software for flash productions.

I suspect that the market these days is mp4, rather than .flv and if Adobe has given an end of life of 2020 the numbers probably don't make sense. It's not unusual to convert media before importing (there are free and commercial programs available for this) into a NLE, even better is to use a workflow that doesn't require third party software.

Re: Can we get .flv and .mp4 support? 3 months, 2 weeks ago #170175

  • MarLondon
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briandrys wrote:
MarLondon wrote:

Of course! I meant... Why don't be the first one?


There is specialist software for flash productions.

I suspect that the market these days is mp4, rather than .flv and if Adobe has given an end of life of 2020 the numbers probably don't make sense. It's not unusual to convert media before importing (there are free and commercial programs available for this) into a NLE, even better is to use a workflow that doesn't require third party software.

I read that, but I don't think this could be the end of the flv container, just because it is a "container file format" and because is used on streaming.

By the way I found now a fast way to convert flv into mp4 using ffmpeg preserving audio & video:

ffmpeg -i input.flv -codec copy output.mp4
Last Edit: 3 months, 2 weeks ago by MarLondon.
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