#11532: Raw bitstream export/import makes video stuttery
-------------------------------------+-------------------------------------
Reporter: LinAGKar | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
Trying to export and import a raw h.264 bitstream as described in
https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video#rawbitstreammethod
makes the video extremely stuttery when viewing it in a browser. The
resulting file plays fine when viewing in mpv or VLC, but if I play it in
Firefox it looks like it's running at 5 FPS or something and if I play it
in Chrome it jitters back and forth like the frames are played out of
order.
How to reproduce:
{{{
linus@feja:/hdd/linus/Hämtningar> ffmpeg -i big_buck_bunny_480p_h264.mov
-map 0:v -c:v copy -bsf:v h264_mp4toannexb raw.h264
ffmpeg version 7.1 Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 14 (SUSE Linux)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--incdir=/usr/include/ffmpeg --extra-cflags='-O2 -Wall -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type
-flto=auto -ffat-lto-objects -g' --optflags='-O2 -Wall -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type
-flto=auto -ffat-lto-objects -g' --disable-htmlpages --enable-pic
--disable-stripping --enable-shared --disable-static --enable-gpl
--enable-version3 --enable-libsmbclient --disable-openssl --enable-gnutls
--enable-ladspa --enable-libshaderc --enable-vulkan --enable-libplacebo
--enable-libaom --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libdc1394
--enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-
libfribidi --enable-libgsm --enable-libjack --enable-libjxl --enable-
librist --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
--enable-libopenmpt --enable-libopenh264-dlopen --enable-libopus --enable-
libpulse --enable-librav1e --enable-librubberband --enable-libsvtav1
--enable-libsoxr --enable-libspeex --enable-libssh --enable-libsrt
--enable-libtheora --enable-libtwolame --enable-libvidstab --enable-
libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-
libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lto
--enable-lv2 --enable-libvpl --enable-vaapi --enable-vdpau --enable-
version3 --enable-libfdk-aac-dlopen --enable-nonfree --enable-libopencore-
amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-libx264
--enable-libx265 --enable-libxvid
libavutil 59. 39.100 / 59. 39.100
libavcodec 61. 19.100 / 61. 19.100
libavformat 61. 7.100 / 61. 7.100
libavdevice 61. 3.100 / 61. 3.100
libavfilter 10. 4.100 / 10. 4.100
libswscale 8. 3.100 / 8. 3.100
libswresample 5. 3.100 / 5. 3.100
libpostproc 58. 3.100 / 58. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'big_buck_bunny_480p_h264.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2008-05-27T18:32:32.000000Z
com.apple.quicktime.player.movie.audio.gain: 1.000000
com.apple.quicktime.player.movie.audio.treble: 0.000000
com.apple.quicktime.player.movie.audio.bass: 0.000000
com.apple.quicktime.player.movie.audio.balance: 0.000000
com.apple.quicktime.player.movie.audio.pitchshift: 0.000000
com.apple.quicktime.player.movie.audio.mute:
com.apple.quicktime.player.movie.visual.brightness: 0.000000
com.apple.quicktime.player.movie.visual.color: 1.000000
com.apple.quicktime.player.movie.visual.tint: 0.000000
com.apple.quicktime.player.movie.visual.contrast: 1.000000
com.apple.quicktime.player.version: 7.4.1 (14)
com.apple.quicktime.version: 7.4.1 (14) 0x7418000 (Mac OS X, 10.5.2,
9C31)
timecode : 00:00:00:00
Duration: 00:09:56.46, start: 0.000000, bitrate: 3342 kb/s
Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661),
yuv420p(tv, bt709, progressive), 853x480, 2899 kb/s, 24 fps, 24 tbr, 2400
tbn (default)
Metadata:
creation_time : 2008-05-27T18:32:32.000000Z
handler_name : Apple Video Media Handler
vendor_id : appl
encoder : H.264
Side data:
displaymatrix: rotation of -0.00 degrees
Stream #0:1[0x2](eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2008-05-27T18:32:32.000000Z
handler_name : Time Code Media Handler
timecode : 00:00:00:00
Stream #0:2[0x4](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
5.1, fltp, 437 kb/s (default)
Metadata:
creation_time : 2008-05-27T18:32:32.000000Z
handler_name : Apple Sound Media Handler
vendor_id : [0][0][0][0]
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Output #0, h264, to 'raw.h264':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
timecode : 00:00:00:00
com.apple.quicktime.player.movie.audio.gain: 1.000000
com.apple.quicktime.player.movie.audio.treble: 0.000000
com.apple.quicktime.player.movie.audio.bass: 0.000000
com.apple.quicktime.player.movie.audio.balance: 0.000000
com.apple.quicktime.player.movie.audio.pitchshift: 0.000000
com.apple.quicktime.player.movie.audio.mute:
com.apple.quicktime.player.movie.visual.brightness: 0.000000
com.apple.quicktime.player.movie.visual.color: 1.000000
com.apple.quicktime.player.movie.visual.tint: 0.000000
com.apple.quicktime.player.movie.visual.contrast: 1.000000
com.apple.quicktime.player.version: 7.4.1 (14)
com.apple.quicktime.version: 7.4.1 (14) 0x7418000 (Mac OS X, 10.5.2,
9C31)
encoder : Lavf61.7.100
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv,
bt709, progressive), 853x480, q=2-31, 2899 kb/s, 24 fps, 24 tbr, 2400 tbn
(default)
Metadata:
creation_time : 2008-05-27T18:32:32.000000Z
handler_name : Apple Video Media Handler
vendor_id : appl
encoder : H.264
Side data:
displaymatrix: rotation of -0.00 degrees
Press [q] to stop, [?] for help
[out#0/h264 @ 0x561cd3297140] video:211089KiB audio:0KiB subtitle:0KiB
other streams:0KiB global headers:0KiB muxing overhead: 0.000000%
frame=14315 fps=0.0 q=-1.0 Lsize= 211089KiB time=00:09:56.41
bitrate=2899.4kbits/s speed=4.07e+03x
linus@feja:/hdd/linus/Hämtningar> ffmpeg -fflags +genpts -r 24 -i raw.h264
-c:v copy output.mp4
ffmpeg version 7.1 Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 14 (SUSE Linux)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--incdir=/usr/include/ffmpeg --extra-cflags='-O2 -Wall -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type
-flto=auto -ffat-lto-objects -g' --optflags='-O2 -Wall -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type
-flto=auto -ffat-lto-objects -g' --disable-htmlpages --enable-pic
--disable-stripping --enable-shared --disable-static --enable-gpl
--enable-version3 --enable-libsmbclient --disable-openssl --enable-gnutls
--enable-ladspa --enable-libshaderc --enable-vulkan --enable-libplacebo
--enable-libaom --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libdc1394
--enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-
libfribidi --enable-libgsm --enable-libjack --enable-libjxl --enable-
librist --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
--enable-libopenmpt --enable-libopenh264-dlopen --enable-libopus --enable-
libpulse --enable-librav1e --enable-librubberband --enable-libsvtav1
--enable-libsoxr --enable-libspeex --enable-libssh --enable-libsrt
--enable-libtheora --enable-libtwolame --enable-libvidstab --enable-
libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-
libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lto
--enable-lv2 --enable-libvpl --enable-vaapi --enable-vdpau --enable-
version3 --enable-libfdk-aac-dlopen --enable-nonfree --enable-libopencore-
amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-libx264
--enable-libx265 --enable-libxvid
libavutil 59. 39.100 / 59. 39.100
libavcodec 61. 19.100 / 61. 19.100
libavformat 61. 7.100 / 61. 7.100
libavdevice 61. 3.100 / 61. 3.100
libavfilter 10. 4.100 / 10. 4.100
libswscale 8. 3.100 / 8. 3.100
libswresample 5. 3.100 / 5. 3.100
libpostproc 58. 3.100 / 58. 3.100
Input #0, h264, from 'raw.h264':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264 (Main), yuv420p(tv, bt709, progressive),
854x480, 25 fps, 1200k tbr, 1200k tbn
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Output #0, mp4, to 'output.mp4':
Metadata:
encoder : Lavf61.7.100
Stream #0:0: Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709,
progressive), 854x480, q=2-31, 24 fps, 1200k tbr, 12288 tbn
Press [q] to stop, [?] for help
[mp4 @ 0x55d7a0abb7c0] Timestamps are unset in a packet for stream 0. This
is deprecated and will stop working in the future. Fix your code to set
the timestamps properly
[mp4 @ 0x55d7a0abb7c0] pts has no value
Last message repeated 14314 times
[out#0/mp4 @ 0x55d7a0ab7740] video:211089KiB audio:0KiB subtitle:0KiB
other streams:0KiB global headers:0KiB muxing overhead: 0.062597%
frame=14315 fps=0.0 q=-1.0 Lsize= 211222KiB time=N/A bitrate=N/A
speed=N/A
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11532>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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