rtmpdump saving as mp4 ?

[PowerFalcon]

What is the flag to save rtmp mp4 streams as mp4 files, using youtube-dl & rtmpdump ?

I'm using the -o flag with rtmpdump to save the file as a FLV, but I want to save as a MP4 instead; not sure whether I must do it in youtube-dl or rtmpdump, considering youtube-dl gets the stream, my assumption is rtmpdump ?

[Vidd]

You would need to use ffmpeg to mux the flv to mp4.

[PowerFalcon]

youtube-dl can't strictly get the MP4 file, even if the actual file online is a MP4 ?

[Vidd]

youtube-dl video-url --list-formats

Note the format code of the mp4.

youtube-dl video-url -F # -o video.mp4



or


youtube-dl video-url -f '(mp4)[height=resolution]' -o video.mp4

where resolution is 480, 720, 1080, etc...

[PowerFalcon]

There are no MP4 format videos, only FLV, can I encode from FLV to MP4 using rtmpdump ?

[Vidd]

rtmpdump is only a stream ripper, it does not encode or remux. You will need to use ffmpeg as I mentioned above.

This is the general ffmpeg command line you would use.
It will remux the flv container to a mp4 container.
Video and audio will be stream copied and not re-encoded.


ffmpeg -i video.flv -c:v copy -c:a copy video.mp4

[PowerFalcon]

rtmpdump is only a stream ripper, it does not encode or remux. You will need to use ffmpeg as I mentioned above.

This is the general ffmpeg command line you would use.
It will remux the flv container to a mp4 container.
Video and audio will be stream copied and not re-encoded.


ffmpeg -i video.flv -c:v copy -c:a copy video.mp4

That command produces a; Output file #0 does not contain any stream error ?

[Vidd]

What is the video and audio codec of the flv? It may be codec that ffmpeg can't put in a mp4 container such as VP6.

In that case remove the copy commands and instead have ffmpeg encode h264 video and aac audio.

Something like:

-codec:v libx264
-codec:a libfdk_aac

In the ffmpeg documentation you can find the other switches for profiles/bit rate/ etc.....

https://trac.ffmpeg.org/wiki/Encode/H.264
https://trac.ffmpeg.org/wiki/Encode/AAC

[PowerFalcon]

I don't know the video and audio codec of the file.

ffmpeg 19-Octvideo.flv -codec:v libx264 -codec:a libfdk_aac videotyrr.mp4

Error: Output file #0 does not contain any stream ?

[Vidd]

Are you putting the input switch -i before 19-Octvideo.flv?

-i 19-Octvideo.flv



But since ffmpeg is giving you problems, another option is to use AviDemux to convert the flv to mp4 instead of ffmpeg.

[PowerFalcon]

Adding the -i flag produces a new error; Unknown encoder 'libfdk_aac' ?

I'm trying mp2 audio codec, as that codec didn't fire any errors.

[bobit]

works for me
latest ffmpeg 2.8.1


you must tell ffmpeg the path and filename
input.flv is in C:\
then put your audio and video options "-acodec libmp3lame -ar 48000 -vcodec libx264"
then save to C:\
as output.mp4

easy

ffmpeg -i c:\input.flv -acodec libmp3lame -ar 48000 -vcodec libx264 c:\output.mp4

[PowerFalcon]

This worked; ffmpeg -i 19-Oct.flv -codec:v libx264 -codec:a mp2 videotyrr.mp4

This didn't; ffmpeg -i c:\input.flv -acodec libmp3lame -ar 44100 -vcodec libx264 c:\output.mp4 - let me upgrade ffmpeg

[PowerFalcon]

Audio & Video at both MP4 worked out successfully; considering I don't know any information of the FLV file to which I am encoding.

I'd prefer to play around with various encoding formats; not knowing I will benefit from what is working, it's worth a try

[bobit]

you must be using
1920's ffmpeg lol

use the latest

you can find info of the flv with vlc

Tools > Codec information > codec tab

tells you what audio and video codecs are in that file


cant see how you coverted a file with ffmpeg
when you did not tell ffmpeg where the input file was ?

[PowerFalcon]

The format of the video must be MP4, the audio for the video file can depend.

cant see how you coverted a file with ffmpeg
when you did not tell ffmpeg where the input file was ?

The input file and output file were both in the same folder.

I'm going to upgrade ffmpeg and update my results.

[bobit]

The format of the video must be MP4, the audio for the video file can depend.

?????????????

[PowerFalcon]

In other words, I must decode the FLV to strictly MP4 video, but the audio of the FLV file can be encoded to any format, so long as there isn't a second delay in the audio or it sounds horrible.

[bobit]

your device only play mp4 then

no mkv, avi, vob flv

lol

[PowerFalcon]

I prefer MP4, my device plays FLV (not all) as well as h.264 & mkv.

[bobit]

you have enigma2 sat receiver ?

[PowerFalcon]

No, Roku2!

[PowerFalcon]

The FLV files are AVC1 (h264) and Audio is AAC, from what I find about the file info.