FLV (Speex) to MP4

[CristianoA]

Format : Flash Video
File size : 67.9 MiB
Duration : 20mn 35s
Overall bit rate : 461 Kbps

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Codec ID : 7
Duration : 20mn 35s
Bit rate mode : Constant
Nominal bit rate : 1 024 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate mode : Variable
Frame rate : 30.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.111

Audio
Format : Speex
Codec ID : 11
Duration : 20mn 35s
Channel(s) : 1 channel
Sampling rate : 5 500 Hz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -8s 804ms

anyone can help me please ?

[Baldrick]

Have you tried ffmpeg or a frontend for it? Like xmedia recode, choose mp4 format, under video tab choose copy, under audio tab choose aac audio.

[CristianoA]

first i used FLV Extract to demux flv file and i have .264 and .spx then spx to mp3 muxing using Yamb frame rate changed to 15.958 and media delay to -8804

flv extract info
File: flv.flv
Estimated True Frame Rate: 15.9583524665019 (3093000/193817)
Average Frame Rate: 15.6344373322422 (19181000/1226843)

but audio is always out sync am i doing something wrong ?

update: about xmedia recode there is no video tab

[Baldrick]

Yes. You should have told you had sync issues....

[CristianoA]

Yes. You should have told you had sync issues....

this my main problem right now

Frame rate : 30.000 fps or Estimated True Frame Rate: 15.958 fps ?

Delay relative to video : -8s 804ms = Yamb Media Delay -8804 ?

[poisondeathray]

Frame rate mode : Variable
Frame rate : 30.000 fps

If it's variable frame rate, then you need to make a VFR MP4 . Not possible with yamb . When you demux it look at the text file timecodes.

It's better not to demux it. If you use ffmpeg or one of the GUI's listed above to do it in one step, it should keep the VFR timecodes for MP4 output

[CristianoA]

Frame rate mode : Variable
Frame rate : 30.000 fps

If it's variable frame rate, then you need to make a VFR MP4 . Not possible with yamb . When you demux it look at the text file timecodes.

It's better not to demux it. If you use ffmpeg or one of the GUI's listed above to do it in one step, it should keep the VFR timecodes for MP4 output

ok ffmpeg which command ?

i tried ffmpeg -i flv.flv -c:v copy -c:a aac flv.mp4

[poisondeathray]

something is wrong with your video or with ffmpeg - stream 0:0 video is not detected "none"

Or continue with your demux routine, but use mkvtoolnix to mux the streams along with the timecodes generated by flvextract to make a VFR MKV, then ffmpeg to rewrap into MP4

Or mp4fpsmod to make a VFR MP4 directly

[CristianoA]

something is wrong with your video or with ffmpeg - stream 0:0 video is not detected "none"

Or continue with your demux routine, but use mkvtoolnix to mux the streams along with the timecodes generated by flvextract to make a VFR MKV, then ffmpeg to rewrap into MP4

Or mp4fpsmod to make a VFR MP4 directly

everything is ok now thanks for help