help casting/converting a file
TheBallOfAeolus opened this issue · 3 comments
First of all I would like to thank you for your time and help to the community.
I think your script is really helpful, but I need help for a specific file I cannot stream via Chromecast from a Synology station.
First of all chromecastize says it should be playable:
./chromecastize.sh videofile.mkv
===========
Processing: videofile.mkv
- general: Matroska -> ok
- video: AVC -> copy
- audio: AAC -> copy
- file should be playable by Chromecast!
If I try to force it to mp4 I get this output
./chromecastize.sh --mp4 videofile.mkv
===========
Processing: videofile.mkv
- file was generated by `chromecastize`, skipping
If I try to force it to mkv I get this output
./chromecastize.sh --mkv videofile.mkv
===========
Processing: videofile.mkv
- file was generated by `chromecastize`, skipping
mediainfo:
mediainfo videofile.mkv
General
Unique ID : xxxxxxxxxxxxxxxxxxxxxxxxxx
Complete name : videofile.mkv
Format : Matroska
Format version : Version 2
File size : 382 MiB
Duration : 47 min 46 s
Overall bit rate : 1 118 kb/s
Encoded date : UTC 2015-10-07 10:29:45
Writing application : mkvmerge v8.4.0 ('A better way to fly') 32bit
Writing library : libebml v1.3.1 + libmatroska v1.4.2
FileExtension_Invalid : mkv mk3d mka mks
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, RefFrames : 8 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 47 min 46 s
Bit rate : 948 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.043
Stream size : 324 MiB (85%)
Writing library : x264 core 148 r2597 e86f3a1
Encoding settings : cabac=1 / ref=8 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=948 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=62500 / vbv_bufsize=78125 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Default : Yes
Forced : No
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : A_AAC
Duration : 47 min 46 s
Bit rate : 168 kb/s
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 kHz / 24.0 kHz
Frame rate : 23.438 FPS (1024 SPF)
Compression mode : Lossy
Delay relative to video : 31 ms
Stream size : 57.4 MiB (15%)
Language : English
Default : Yes
Forced : No
Menu
00:00:00.000 : en:00:00:00.000
00:00:46.797 : en:00:00:46.797
00:19:04.393 : en:00:19:04.393
00:27:08.794 : en:00:27:08.794
00:34:34.906 : en:00:34:34.906
00:41:11.219 : en:00:41:11.219
00:46:48.472 : en:00:46:48.472
Any suggestion?
As additional information, I have manually transcoded the same video file with HandBrake and I was able to cast it.
the mediainfo of the transcoded video is:
mediainfo transformed.with.HandBrake.m4v
General
Complete name : transformed.with.HandBrake.m4v
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/iso2/avc1/mp41)
File size : 489 MiB
Duration : 47 min 46 s
Overall bit rate : 1 430 kb/s
Movie name : transformed.with.HandBrake
Encoded date : UTC 2018-03-11 00:37:50
Tagged date : UTC 2018-03-11 00:37:50
Writing application : HandBrake 1.0.7 2017082500
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4
Format settings, CABAC : Yes
Format settings, RefFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 47 min 46 s
Bit rate : 1 262 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 23.976 (24000/1001) FPS
Minimum frame rate : 23.974 FPS
Maximum frame rate : 23.981 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.057
Stream size : 431 MiB (88%)
Writing library : x264 core 148 r2795 aaa9aa8
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=22.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=20000 / vbv_bufsize=25000 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2018-03-11 00:37:50
Tagged date : UTC 2018-03-11 00:37:50
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Menus : 3
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 47 min 46 s
Bit rate mode : Constant
Bit rate : 162 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 55.3 MiB (11%)
Title : Stereo / Stereo
Language : English
Default : Yes
Alternate group : 1
Encoded date : UTC 2018-03-11 00:37:50
Tagged date : UTC 2018-03-11 00:37:50
Menus : 3
Menu
ID : 3
Codec ID : text
Duration : 47 min 46 s
Language : English
Encoded date : UTC 2018-03-11 00:37:50
Tagged date : UTC 2018-03-11 00:37:50
Bit rate mode : CBR
Menu For : 1,2
00:00:00.000 : 00:00:00.000
00:00:46.797 : 00:00:46.797
00:19:04.518 : 00:19:04.393
00:27:08.794 : 00:27:08.794
00:34:35.031 : 00:34:34.906
00:41:11.219 : 00:41:11.219
00:46:48.597 : 00:46:48.472
By the way, I've understood why if I force a file to mp4 I get this output
./chromecastize.sh --mp4 videofile.mkv
===========
Processing: videofile.mkv
- file was generated by `chromecastize`, skipping
As soon as ./chromecastize.sh videofile.mkv is run, an entrance is created in ~/.chromecastize/processed_files.
Having the file described in ~/.chromecastize/processed_files is making the option --mp4 and --mkv skipping the file.
I am still learning bash, but I think I can add a --force option, so even if a file is included in ~/.chromecastize/processed_files, chromecastize will run anyway.
Before that, I am trying to figure out how the video codec work, so chromecastize can transform to the format I am looking for.
Thanks again (I am learning a lot with your script!) ;)
Thanks for the report. I had a look at the differences between your original non-working file and the working file converted by Handbrake, and I found this report which seems to explain why it is not working: https://issuetracker.google.com/issues/69112577
Apparently the support for multichannel AAC audio has been removed in firmware 1.28.
Thanks for reporting the issue. We discarded support for 5.1 AAC & Multi-channel AAC streams for Gen 2 and Ultra devices from 1.28 onwards.
11-09 15:48:28.554 1145 1145 I cast_shell: [2604:2604:INFO:MediaSource.cpp(199)] addSourceBuffer this=0x28ead940 type="video/mp2t; codecs="avc1.4D401E,mp4a.40.2"" -> 0x396b70b0
This is working as intended. We would recommend you to use either regular stereo (2-channel) AAC or AC3/EAC3 audio or 5.1 Opus audio stream or etc.
This matches with your report, your original media file has 6 channel AAC audio and doesn't work. The Handbrake conversion has 2 channel AAC audio which works.
I think a good solution would be to check if multichannel AAC audio is used, and if this is the case, convert it to multichannel Vorbis, which is still supported.