Could not find tag for codec none in stream #0, codec not currently supported in container - incorrect codec parameters ?

[userlip]

Describe the bug
Trying to transcode an MP4 Video ( https://fuego-files.s3.eu-central-1.amazonaws.com/public/7c27c350565cf536a3de8f1e92c0448/23f6318b13cce446972ce1bf37df514/video/video.mp4 ) when I came across this error.

Edit: I have found that a similar/same error occurs when using this video ( https://fuego-files.s3.eu-central-1.amazonaws.com/public/2372b4ff89f01c95942243eb09572bd/d797b844073e642f966ed99a8ed64eb/video/video.mp4 ) which seems to be a HEVC video. Maybe that will help while debugging too.

I am using the code @aminyazdanpanah provided in Error #46 (thanks by the way!). Code works perfectly fine on most videos but I have been seeing some issues while batch processing videos and this is one I found that I cant find a fix for.

The ffmpeg command is:

ffmpeg '-y' '-i' 'video.mp4' '-bf' '1' '-keyint_min' '120' '-g' '120' '-sc_threshold' '0' '-b_strategy' '0' '-use_timeline' '1' '-use_template' '1' '-init_seg_name' 'video_init_$RepresentationID$.$ext$' '-media_seg_name' 'video_chunk_$RepresentationID$_$Number%05d$.$ext$' '-seg_duration' '2' '-hls_playlist' '1' '-f' 'dash' '-map' '0' '-b:v:0' '5075k' '-s:v:0' '640x360' '-map' '0' '-b:v:1' '6344k' '-s:v:1' '854x480' '-map' '0' '-b:v:2' '8458k' '-s:v:2' '1280x720' '-map' '0' '-b:v:3' '12688k' '-s:v:3' '1920x1080' '-c:v' 'libx264' '-strict' '-2' '/tmp/php_ffmpeg_video_streaming/video2.mpd'

Exact output that throws the error:

[mp4 @ 0x55f62b9bf580] Could not find tag for codec none in stream #0, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:12 --

To Reproduce

A) Use code from #46 and use the file i provided.
B) Download the provided video and use the ffmpeg command provided

Desktop/Server (please complete the following information):
ffmpeg version 4.2.2-1ubuntu118.04.sav0 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu118.04

[userlip]

Not gonna Edit the post again because you might have already read it, but I think I found the reason.

Duration: 00:00:11.52, start: 0.000000, bitrate: 44900 kb/s Stream #0:0(und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709), 3840x2160, 44804 kb/s, 59.99 fps, 60 tbr, 600 tbn, 600 tbc (default) Metadata: rotate : 90 creation_time : 2019-09-20T17:51:42.000000Z handler_name : Core Media Video encoder : HEVC Side data: displaymatrix: rotation of -90.00 degrees Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 86 kb/s (default) Metadata: creation_time : 2019-09-20T17:51:42.000000Z handler_name : Core Media Audio Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default) Metadata: creation_time : 2019-09-20T17:51:42.000000Z handler_name : Core Media Metadata Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default) Metadata: creation_time : 2019-09-20T17:51:42.000000Z handler_name : Core Media Metadata Stream mapping: Stream #0:0 -> #0:0 (hevc (native) -> h264 (libx264)) Stream #0:1 -> #0:1 (copy) Stream #0:2 -> #0:2 (copy) Stream #0:3 -> #0:3 (copy) Stream #0:0 -> #0:4 (hevc (native) -> h264 (libx264)) Stream #0:1 -> #0:5 (copy) Stream #0:2 -> #0:6 (copy) Stream #0:3 -> #0:7 (copy) Stream #0:0 -> #0:8 (hevc (native) -> h264 (libx264)) Stream #0:1 -> #0:9 (copy) Stream #0:2 -> #0:10 (copy) Stream #0:3 -> #0:11 (copy) Stream #0:0 -> #0:12 (hevc (native) -> h264 (libx264)) Stream #0:1 -> #0:13 (copy) Stream #0:2 -> #0:14 (copy) Stream #0:3 -> #0:15 (copy) Stream #0:0 -> #0:16 (hevc (native) -> h264 (libx264)) Stream #0:1 -> #0:17 (copy) Stream #0:2 -> #0:18 (copy) Stream #0:3 -> #0:19 (copy) Stream #0:0 -> #0:20 (hevc (native) -> h264 (libx264)) Stream #0:1 -> #0:21 (copy)

I think it is because of the 2 Audio Stream (0:2 and 0:3) that have no Data. I transcoded the video to h264, probed it and it had just the one functioning audio stream, so I was able to transcode it.

Still trying to find a better solution than needing to transcode the video to h264 before creating the DASH and HLS streams.

Hope this helps

[aminyazdanpanah]

The type of stream num 2 and num 3 are data(or metadata)(see Stream specifiers for more information).

It seems like FFmpeg cannot detect these two streams as data streams and tries to use these for the output codec.

Unfortunately, I cloud not find a valid solution for this problem, so I will be keeping this issue open until I(or someone else) find a better way.

[userlip]

Ok thanks!

By the way, do you know if there is a faster solution to remove such data streams reliably other than transcoding it to x264?

I am using this code now:

$video = $ffmpeg->open('audio_only.mp4'); $video->save(new FFMpeg\Format\Video\X264('aac', 'libx264'), 'export-x264.mp4');

[aminyazdanpanah]

see the following page on StackOverflow:
https://stackoverflow.com/questions/38161697/how-to-remove-one-track-from-video-file-using-ffmpeg

Hope this helps

[crishoj]

In our use case, when transcoding .mov to DASH, the solution was to add -map '-0:d' (use everything except data streams) after -map '0'.