Convert .ts file to .mp4

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hi,

I am trying to convert .ts file with audio to a .mp4 with the same audio. I tried below mentioned command and is successful in converting the video.

gst-launch-1.0 filesrc location=convert1.ts ! tsdemux ! "video/x-h264,profile=high" ! h264parse ! mp4mux ! filesink location=chk.mp4

The video file is made without errors.

How can I add the audio to the above pipeline which is in the .ts file to the .mp4 file. The audio info of the .ts file

Audio
ID : 66 (0x42)
Menu ID : 1 (0x1)
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Format version : Version 4
Muxing mode : ADTS
Codec ID : 15-2
Duration : 2 min 10 s
Bit rate mode : Variable
Channel(s) : 1 channel
Channel layout : C
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Delay relative to video : -416 ms
Language : English

Thank You

3

Hi,
It is easier to use ffmpeg. Please install ffmpeg and try

$ ffmpeg -i convert1.ts -c copy chk.mp4
4

Hi DaneLLL,

Thank you for the reply

In my application I need to run encoding of 2 1080p streams with audio from v4l2rc sources while the file is being converted. ffmpeg uses much cpu so that the encoding process with looses frames in the encoded output. When I tried with above gstreamer pipeline that did not occur.

Since the video wrapping from ts to mp4 work using the above pipeline gstreamer Is there a method to mux the audio from the file using gstreamer?

And, Is it possible to run the ffmpeg commans utilizing the GPU of jetson nano?

Thank you

5

Hi,
It doesn’t decode and then encode h264 stream in the command, so you should see same CPU usage in both gstreamer and ffmpeg.

6

Thank you I will try this method

I saw a document where NVIDIA has developed a method to use GPU for ffmpeg is this applicable for jetson nano?

https://developer.nvidia.com/designworks/dl/Using_FFmpeg_with_NVIDIA_GPU_Hardware_Acceleration-pdf

7

Hi,
For using gstreamer pipeline, please try

$ gst-launch-1.0 qtmux name=mx ! filesink location=test.mp4 filesrc location= test.ts ! tsdemux name=dmx dmx. ! queue ! h264parse ! mx. dmx. !  queue ! aacparse ! faad ! audioresample ! audioconvert ! voaacenc ! mx.

Somehow audio stream has to be decompressed and compressed again. This may take more CPU usage than ffmpeg.

For ffmpeg with hardware acceleration, please check
Jetson Nano FAQ
Q: Is hardware acceleration enabled in ffmpeg?

8

Thank You I will try this pipeline