1516178 - The official Firefox for Linux fails to parse MP4 videos in HTML5 using system installed ffmpeg

Status: RESOLVED INVALID

(Core :: Audio/Video: Playback, defect, P1)

Description

[Artem S. Tashkinov]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0

Steps to reproduce:

I'm using the official Firefox distribution for Linux from Mozilla (downloaded from https://ftp.mozilla.org/pub/firefox/releases/) and I attempted to replace Mozilla's stock libmozavcodec.so and libmozavutil.so libraries with my own (ffmpeg 4.0.3) which support H.264 and AAC.

In such a scenario Firefox is able to play MP4 videos with H.264 video and AAC audio directly (via File-> Open) however Firefox is unable to play HTML5 video.

Is there a way to make such a configuration work?

Comment 1

[Jean-Yves Avenard [:jya]]

Do not replace the libmozavcodec that ships with Firefox, it only does vp8 and vp9 and is custom taylored for that use.

For h264 and aac, all you need to do is install the ffmpeg's Libavcodec on your system and have the libraries found in the LD_LIBRARY_PATH (which all packager will do)

libmozavcodec won't ever attempt to decode h264, if you get that to work it's because it found another Libavcodec.so somewhere

Comment 2

[Artem S. Tashkinov]

(In reply to Jean-Yves Avenard [:jya] from comment #1)
> Do not replace the libmozavcodec that ships with Firefox, it only does vp8
> and vp9 and is custom taylored for that use.
> 
> For h264 and aac, all you need to do is install the ffmpeg's Libavcodec on
> your system and have the libraries found in the LD_LIBRARY_PATH (which all
> packager will do)

Now I've done exactly that however the situation hasn't changed: Firefox can play mp4/h.264/aac files via File -> Open but doesn't want to support them via HTML5 as indicated by https://www.youtube.com/html5 https://tekeye.uk/html/html5-video-test-page and http://demos.flowplayer.com/videotest/mp4.html

Is there anything else I'm missing? Sorry for reopening this bug report but otherwise you may skip over it.

In console I see this:

Specified “type” attribute of “video/mp4” is not supported. Load of media resource //edge.flowplayer.org/functional.mp4 failed. mp4.html
All candidate resources failed to load. Media load paused.

and

Specified “type” attribute of “video/mp4” is not supported. Load of media resource images/Joren_Falls_Izu_Japan.mp4 failed.
html5-video-test-page
All candidate resources failed to load. Media load paused.

> 
> libmozavcodec won't ever attempt to decode h264, if you get that to work
> it's because it found another Libavcodec.so somewhere

In about:config I see this:

media.eme.vp9-in-mp4.enabled;false
media.mediasource.mp4.enabled;true
media.mp4.enabled;true
media.ffmpeg.enabled;true
media.ffmpeg.low-latency.enabled;false

Comment 3

[Jean-Yves Avenard [:jya]]

Which distribution of Linux are you using?

When you run the command ffmpeg -codecs what do you get?

Not being able to play h264 videos is entirely on the version of ffmpeg you are using

Do not hack the libraries that ship with ffmpeg

And provide your about:support info

Comment 4

[Artem S. Tashkinov]

(In reply to Jean-Yves Avenard [:jya] from comment #3)
> Which distribution of Linux are you using?

Fedora 28 and 29.

> 
> When you run the command ffmpeg -codecs what do you get?

$ ffmpeg -codecs | egrep -i "aac|264"
ffmpeg version 4.0.1 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 8 (GCC)
  configuration: --disable-static --enable-nonfree --enable-avfilter --enable-shared --enable-gpl --enable-postproc --enable-pthreads --enable-libspeex --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-libopus --enable-libopenjpeg --disable-debug --disable-doc --enable-libpulse --extra-cflags='-mtune=generic' --enable-version3 --enable-libvorbis --enable-libfdk-aac --enable-gnutls --enable-libfreetype --enable-libx265 --libdir=/usr/local/lib64 --enable-lto
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100
 DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_v4l2m2m ) (encoders: libx264 libx264rgb h264_v4l2m2m h264_vaapi )
 DEA.L. aac                  AAC (Advanced Audio Coding) (decoders: aac aac_fixed libfdk_aac ) (encoders: aac libfdk_aac )
 D.A.L. aac_latm             AAC LATM (Advanced Audio Coding LATM syntax)

> 
> Not being able to play h264 videos is entirely on the version of ffmpeg you
> are using

Again, and I've mentioned it _twice_ already, Firefox can play mp4/h.264/aac videos when I open them via File -> Open.

My FFmpeg is built to support most video codecs including H.264/H.265 and AAC.

> 
> Do not hack the libraries that ship with ffmpeg

I didn't change anything while compiling ffmpeg.

> 
> And provide your about:support info

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      "fallbacks": []
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  "extensions": [
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    },
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      "isActive": false,
      "id": "{aecec67f-0d10-4fa7-b7c7-609a2db280cf}"
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      "version": "35.0.0",
      "id": "[e-mail]"
    },
    {
      "name": "Form Autofill",
      "version": "1.0",
      "id": "[e-mail]"
    },
    {
      "name": "Web Compat",
      "version": "3.0.0",
      "id": "[e-mail]"
    },
    {
      "name": "WebCompat Reporter",
      "version": "1.1.0",
      "id": "[e-mail]"
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  ]
}

Comment 5

[Artem S. Tashkinov]

Needless to say Firefox 68 [beta 4] is affected as well.

Comment 6

[Artem S. Tashkinov]

Tried setting media.mediasource.experimental.enabled to true with no success.

Comment 7

[Artem S. Tashkinov]

And here's ffmpeg being found and loaded:

[pid 21285] openat(AT_FDCWD, "/opt/firefox/libmozavutil.so", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/opt/firefox/libmozavcodec.so", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/usr/local/lib64/libavcodec.so.58", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/usr/local/lib64/libswresample.so.3", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/usr/local/lib64/libavutil.so.56", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libfdk-aac.so.1", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libmp3lame.so.0", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libopenjp2.so.7", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libopus.so.0", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libspeex.so.1", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/usr/local/lib64/libx264.so.152", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/usr/local/lib64/libx265.so.169", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libxvidcore.so.4", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libva.so.2", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libva-drm.so.2", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libva-x11.so.2", O_RDONLY|O_CLOEXEC) = 61
[pid 21285] openat(AT_FDCWD, "/lib64/libvdpau.so.1", O_RDONLY|O_CLOEXEC) = 61

Comment 8

[Artem S. Tashkinov]

And also YouTube says AV1 is not supported here:

https://www.youtube.com/testtube

"AV1 decoding is not available on this browser yet."

In console I see this message: The video on this page can’t be played. Your system may not have the required video codecs for: video/mp4; codecs="av01.0.05M.08"

Comment 9

[Artem S. Tashkinov]

Firefox 69 beta 4: no changes.

Does anyone in Mozilla org even care? Is there anyone who's responsible for FFmpeg integration?

This bug report has zero activity, nothing has been offered as a workaround, no information has been requested.

Comment 10

[Artem S. Tashkinov]

I'm now running Fedora 30 + FFMpeg 4.1.4 ( https://ffmpeg.org/releases/ffmpeg-4.1.4.tar.xz installed to /usr/local/lib64 ) + Firefox ( https://ftp.mozilla.org/pub/firefox/releases/69.0b3/linux-x86_64/en-US/firefox-69.0b3.tar.bz2 )

$ ldd which mpv | grep libav
libavcodec.so.58 => /usr/local/lib64/libavcodec.so.58 (0x00007ff4bdf20000)
libavdevice.so.58 => /usr/local/lib64/libavdevice.so.58 (0x00007ff4bdb5a000)
libavutil.so.56 => /usr/local/lib64/libavutil.so.56 (0x00007ff4bdae6000)
libavformat.so.58 => /usr/local/lib64/libavformat.so.58 (0x00007ff4bd89b000)
libavfilter.so.7 => /usr/local/lib64/libavfilter.so.7 (0x00007ff4bd517000)

Comment 11

[Jean-Yves Avenard [:jya]]

The shipped libmozavcodec only supports VP9, VP8 and Flac

We will not support replacing shipped libmozav* with a custom one no.

Comment 12

[Artem S. Tashkinov]

(In reply to Jean-Yves Avenard [:jya] from comment #11)

The shipped libmozavcodec only supports VP9, VP8 and Flac

We will not support replacing shipped libmozav* with a custom one no.

I has long stopped replacing these libraries but I was told that Firefox can use system installed ffmpeg libraries which it does in my case however only when trying to open files directly via File -> Open.

Firefox is unable to play anything from the web using the MP4 container format.

This bug report can be reproduced in under a few minutes.

I wonder why you're so uncooperative.

Steps to reproduce

1. Install Fedora 30
2. Compile ffmpeg with

./configure --disable-static --enable-nonfree --enable-avfilter  \
--enable-shared --enable-gpl --enable-postproc --enable-pthread \
--enable-version3 --libdir=/usr/local/lib64 --enable-lto --enable-pic

3. Create /etc/ld.so.conf.d/local-x64.conf with
   /usr/local/lib64

4. Run sudo ldconfig

5. Download Firefox and run it.

That's it.

Comment 13

[Artem S. Tashkinov]

And why on Earth have you closed it?

Comment 14

[Artem S. Tashkinov]

2.1 I've forgotten about make install of course.

Comment 15

[Artem S. Tashkinov]

If you are so lazy to do that on your own I can publish a VM image for you to play with. It'll be a huge download though, something like a 1.5GB or so.

Comment 16

[Jean-Yves Avenard [:jya]]

If you start with the environment variable MOZ_LOG=PlatformDecoderModule:5

It will show why it's not loading.

Comment 17

[Artem S. Tashkinov]

$ MOZ_LOG=PlatformDecoderModule:5 firefox
[Child 2126: Main Thread]: D/PlatformDecoderModule H264/AAC codecs unsupported without [
[Child 2126: Main Thread]: D/PlatformDecoderModule libavcodec.so.58
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec-ffmpeg.so.58
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec-ffmpeg.so.57
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec-ffmpeg.so.56
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec.so.57
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec.so.56
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec.so.55
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec.so.54
[Child 2126: Main Thread]: D/PlatformDecoderModule , libavcodec.so.53
[Child 2126: Main Thread]: D/PlatformDecoderModule ]
[Child 2126: Main Thread]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 2126: Main Thread]: D/PlatformDecoderModule Agnostic decoder rejects requested type

Comment 18

[Artem S. Tashkinov]

This what happens if I open an MP4/AVC file via Firefox File -> Open menu:

Parent 5744, Gecko_IOThread] WARNING: pipe error (124): Connection reset by peer: file /builds/worker/workspace/build/src/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 358
[Child 7079: Main Thread]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: Main Thread]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: Main Thread]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: Main Thread]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: Main Thread]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: MediaPlayback #1]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: MediaPlayback #1]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: MediaPlayback #1]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: MediaPlayback #1]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule Initialising FFmpeg decoder.
[Child 7079: MediaPDecoder #2]: D/PlatformDecoderModule Initialising FFmpeg decoder.
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule FFmpeg init successful.
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule AudioTrimmer[0x7f50cc6c4920] ::operator(): sample[-42666,-21333] no trimming information
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule AudioTrimmer[0x7f50cc6c4920] ::HandleDecodedResult: sample[-42666,-21333] (decoded[-42666,-21333] no trimming needed
[h264 @ 0x7f50cc551000] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x7f50cc551000] nal_unit_type: 8(PPS), nal_ref_idc: 3
[Child 7079: MediaPDecoder #2]: D/PlatformDecoderModule FFmpeg init successful.
[h264 @ 0x7f50cc551000] nal_unit_type: 6(SEI), nal_ref_idc: 0
[h264 @ 0x7f50cc551000] nal_unit_type: 5(IDR), nal_ref_idc: 3
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule Choosing FFmpeg pixel format for video decoding.
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule Requesting pixel format YUV420P.
[h264 @ 0x7f50cc551000] Format yuv420p chosen by get_format().
[h264 @ 0x7f50cc551000] Reinit context to 432x240, pix_fmt: yuv420p
[h264 @ 0x7f50cc551000] no picture
[h264 @ 0x7f50cc552000] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 2
[h264 @ 0x7f50cc551000] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 2
[Child 7079: MediaPDecoder #2]: D/PlatformDecoderModule Got one frame output with pts=0 dts=33366 duration=33367 opaque=-9223372036854775808
[Child 7079: MediaPDecoder #1]: D/PlatformDecoderModule AudioTrimmer[0x7f50cc6c4920] ::operator(): sample[-21333,0] no trimming information
[Child 7079: MediaPDecoder #2]: D/PlatformDecoderModule AudioTrimmer[0x7f50cc6c4920] ::HandleDecodedResult: sample[-21333,0] (decoded[-21333,0] no trimming needed

So, I'm gonna ask for the 4th time: why does Firefox open and plays locally saved files but cannot open anything on the web?

Comment 19

[Artem S. Tashkinov]

Looks like you haven't spent a single minute trying to read and understand this bug report.

Again,

Firefox cannot play media files (MP4/AVC/AAC) from the web.

Firefox can play the same files after you download them and open them via File -> Open menu.

Comment 20

[Artem S. Tashkinov]

And even though it plays locally saved files, there are still nine errors being logged before the playback starts.

I haven't read the code, and I'm not a C++ programmer but it looks like the FFmpeg initialization routine is simply broken - it sometimes magically works.

Comment 21

[Artem S. Tashkinov]

Attachment: madness.png

Comment 22

[Jean-Yves Avenard [:jya]]

Berating people isn't helping.

Start firefox with the following env variable set: MOZ_DISABLE_CONTENT_SANDBOX=1

Comment 23

[Artem S. Tashkinov]

(In reply to Jean-Yves Avenard [:jya] from comment #22)

Berating people isn't helping.

Start firefox with the following env variable set: MOZ_DISABLE_CONTENT_SANDBOX=1

This option has fixed the issue. Is there a less dangerous workaround?

Comment 24

[Artem S. Tashkinov]

I've found another workaround: security.sandbox.content.read_path_whitelist=/usr/local/lib64/

(For some reasons security.sandbox.content.level=3 didn't work for me).

Comment 25

[Jean-Yves Avenard [:jya]]

use official ffmpeg package, place the lib in the default lib folders, modify security.sandbox.content.read_path_whitelist pref

Comment 26

[Artem S. Tashkinov]

I've tried copying the libav* libraries to /usr/lib64 and also to Firefox's installation folder with no success but it might be because in my case ffmpeg depends on even more libraries installed to /usr/local/lib64, so, if I get you right, everything must be installed in /usr/lib64.

The official Fedora's ffmpeg package is all but useless (doesn't support AVC/AAC) and I'm not willing the one provided by RPMFusion. Also they both depend on a lot of extra libraries which I'm not willing to install, that's why I'm using my own optimized build.

I still believe Firefox could be allowed to open shared libraries from /usr/local/lib and /usr/local/lib64 but I guess that would require an extra bug report.