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ERROR: Can not detect Format video after Recording a live stream

Hi everyone,

I have a problem with my HTTPLiveStreamRecord.

Sometimes, my mp4 file can not detect the format when I finished a recording of a live stream. Although my live stream still works well.

I check the properties of the mp4 file, details tabs and see no value in video property and audio property.

What problems with my recording?

Thank your help.

Hi,

LiveStreamRecord usually only records what it receives.

Please show/paste the details of the recording’s video and audio

codec information, using ffprobe -i ( from ffmpeg) or use a gui tool such

as mediainfo or gspot.

Daren

Hi Hungnguyen,

I don’t understand, what does not detect the format? What is the “details tab” you are looking at? Can you play one of these files back in Wowza vod application?

Richard

Hungnguyen,

It sounds like the recording is corrupt. This can happen because of network problems during the recording. Do you see any problems in the access log for the problem recording?

Richard

Hi Daren

Here there are the codec information. which is recorded normally.

General

Complete name : D:\s4_30_5_Profile_4.mp4

Format : MPEG-4

Format profile : Adobe Flash

Codec ID : f4v

File size : 5.90 GiB

Duration : 7h 49mn

Overall bit rate mode : Variable

Overall bit rate : 1 798 Kbps

Encoded date : UTC 2014-05-30 09:00:31

Tagged date : UTC 2014-05-31 02:06:08

Video

ID : 1

Format : AVC

Format/Info : Advanced Video Codec

Format profile : High@L3.1

Format settings, CABAC : Yes

Format settings, ReFrames : 4 frames

Codec ID : avc1

Codec ID/Info : Advanced Video Coding

Duration : 7h 49mn

Bit rate mode : Constant

Bit rate : 315 bps

Nominal bit rate : 1 620 Kbps

Width : 720 pixels

Height : 576 pixels

Display aspect ratio : 4:3

Frame rate mode : Variable

Frame rate : 25.000 fps

Minimum frame rate : 24.390 fps

Maximum frame rate : 55.556 fps

Standard : PAL

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Progressive

Bits/(Pixel*Frame) : 0.000

Stream size : 1.06 MiB (0%)

Title : WowzaMediaServerPro

Language : English

Encoded date : UTC 2014-05-30 09:00:31

Tagged date : UTC 2014-05-30 09:00:31

Color primaries : BT.601 PAL

Transfer characteristics : BT.470 System B, BT.470 System G

Matrix coefficients : BT.601

Audio

ID : 2

Format : AAC

Format/Info : Advanced Audio Codec

Format profile : LC

Codec ID : 40

Duration : 7h 49mn

Source duration : 3s 798ms

Bit rate mode : Variable

Channel(s) : 2 channels

Channel positions : Front: L R

Sampling rate : 48.0 KHz

Compression mode : Lossy

Stream size : 0.00 Byte (0%)

Source stream size : 1.07 MiB (0%)

Title : WowzaMediaServerPro

Language : English

Encoded date : UTC 2014-05-30 09:00:31

Tagged date : UTC 2014-05-30 09:00:31

mdhd_Duration : 28186020

Hungnguyen

Hi Richard,

I’m sorry, if it has a confusion.

The detail information above is of the mp4 file which is recorded successfully. The mp4 files, which are identified the encode format, can not be played with my Wowza vod application.

Therefore I can not use them as video source for my vod application.

The following is the codec details of a error record, I used Mediainfo to check it.

General

Complete name : D:\SCTV1_310514_Profile_4.mp4

Format : MPEG-4

Format profile : Adobe Flash

Codec ID : f4v

File size : 10.6 MiB

Can I fill the codec informations which are short?

Thank your help.

Hungnguyen.