#7965(ffmpeg:new): Support for HEVC with Alpha
#7965: Support for HEVC with Alpha -----------------------------------+--------------------------------------- Reporter: leemartin | Type: enhancement Status: new | Priority: normal Component: ffmpeg | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -----------------------------------+--------------------------------------- At WWDC this year, Apple introduced support for HEVC with Alpha to both their app and browser platforms. You can find their talk on the subject here: https://developer.apple.com/videos/play/wwdc2019/506 I'm an amateur at FFmpeg but I went down a rabbit hole today, trying to create a video in this new format using the latest version of FFmpeg. I took a rather simple approach of using ffprobe on one of their example video files (found in the resources on the link above) to get a profile and attempting to tune an ffmpeg encoding command to fit the same profile. While the following command does recreate the profile, it does not retain the transparency of the source prores .mov file. {{{ % ffmpeg -i puppets_with_alpha_prores.mov -c:v libx265 -tag:v hvc1 -pix_fmt yuv420p -colorspace bt709 -color_primaries bt709 -color_trc bt709 puppets_with_alpha_hevc.mov }}} Apple is pretty clear about how they are achieving this encoding in their talk and examples. Naturally, I didn't follow anything they said and simply tried to hack a solution. So I'm wondering if this is something FFmpeg can do or would be able to support in the future? Thanks for the help! -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+---------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: ffmpeg Version: unspecified | Resolution: Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+---------------------------------- Changes (by leemartin): * priority: normal => wish -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:1> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Changes (by cehoyos): * keywords: => hevc * version: unspecified => git-master * component: ffmpeg => avcodec Comment: A small sample file will be useful. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:2> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Changes (by leemartin): * Attachment "puppets_with_alpha_hevc.mov" added. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by leemartin): Replying to [comment:2 cehoyos]:
A small sample file will be useful.
Attached Apple's sample file. You can also see it in action on iOS 13 Safari with the following code block {{{ <video src="puppets_with_alpha_hevc.mov" autoplay muted playsinline loop></video> }}} As seen in this tweet: https://twitter.com/leemartin/status/114133658079747686 -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:3> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by cehoyos): Replying to [comment:3 leemartin]:
Replying to [comment:2 cehoyos]:
A small sample file will be useful.
As seen in this tweet:
-- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:4> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by leemartin): Sorry about that. Here's the right link: https://twitter.com/leemartin/status/1141336580797476865 Replying to [comment:4 cehoyos]:
Replying to [comment:3 leemartin]:
Replying to [comment:2 cehoyos]:
A small sample file will be useful.
As seen in this tweet:
-- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:5> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by shaocaholica): You would need to use a pix_fmt that has an alpha channel as well. Any of the yuv(a) formats thats also supported by h.265. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:6> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by leemartin): Using my command above, then I try swapping the pix_fmt for 'yuva420p' I receive the warning: Incompatible pixel format 'yuva420p' for codec 'libx265', auto-selecting format 'yuv420p' Is there an alpha supported pixel format you can suggest? -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:7> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by shaocaholica): No I just mean if the feature is added you would need an alpha channel pix_fmt. The one you end up using will depend on whats supported as far as color sub sampling and bit depth. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:8> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by cehoyos): Note that this ticket - as shown by the sample attached - is about supporting decoding of transparency-containing (Apple) files and providing the transparency. Encoding requests cannot be made here as FFmpeg does not contain a native hevc encoder. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:9> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Changes (by pecus): * Attachment "HEVC-Video-with-Alpha-Interoperability-Profile.pdf" added. Apple interoperability profile proposal -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by pecus): In case it might help, Apple had released a technical document that I did not see referenced here, so I uploaded it. I really hope ffmpeg will provide support for decoding and encoding of transparency/alpha supporting video (I know that encoding depends on libx265 providing it) -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:10> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Changes (by Balling): * status: new => open Comment: Support in hevc_videotoolbox https://patchwork.ffmpeg.org/project/ffmpeg/patch/20210223050227.65698-1-bou... Also nvidia started to add this thingy. See: #9088 As I understand x265 does not support alpha https://bitbucket.org/multicoreware/x265_git/issues/577/support-for-alpha- transparency-per-apple -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:11> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by Alexander): It would be great to see HEVC alpha transparency supported in FFMpeg. It might look like a minor issue but it’s really not. In WebGL toolkits like Verge3D, transparent textures are used to create various cool effects. In Chrome/Firefox/Edge we have WebM, but for Safari (for both desktop and mobile), HEVC is the only option. Right now we [https://www.soft8soft.com/wiki/index.php/Video_textures_and_alpha_transparen... recommend] our users to use FFMpeg with VideoToolbox encoder, but it is limited to Macs only. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:12> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by Balling): Some support https://patchwork.ffmpeg.org/project/ffmpeg/patch/tencent_5F1F4DA9CFDF5521A7... And https://patchwork.ffmpeg.org/project/ffmpeg/patch/tencent_E0CDAECFC0550E2778... There is also support added in one of Nvidia's projects. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:13> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by logiclrd):
As I understand x265 does not support alpha
It does now. As of version 4.0, which dropped a month or two back, there is a `--alpha` command-line option. With this option, the input is assumed to be a `yuva420p` raw stream. As of writing this, to get this latest version you must build `x265` from source. At least on my OS, the central package manager doesn't yet have version 4.0. I have found the following sequence which //seems// to produce an MP4 file with HEVC with alpha content, but I am not on a Mac and have found no way to test it because the decoding support described by this ticket is not yet implemented. :-) {{{ x265 --input-res 606x692 --fps 30000/1001 --alpha --crf 20 Zap.yuva420p Zap.hevc mkvmerge Zap.hevc -o Zap.mkv ffmpeg -itsscale 0.3336666666 -i Zap.mkv -c copy -vtag hvc1 Zap.mp4 -y }}} The `-itsscale` option is to fix an issue with the framerate. I couldn't find a way to get `mkvmerge` to produce the right output (there may be a way). By default, it seems to emit HEVC frames timestamped to 10fps. This scale factor converts from 10fps to 30000/1001 fps. Hopefully this information is helpful to someone. There is a tool called Zond 265 which does some fascinating inspection of internal H.265 encoding details. It does not support alpha channels yet, and I was told that the reason is that FFMPEG doesn't decode HEVC with Alpha yet. I also found this related issue in Trac: #10901 (Does Trac have a mechanism for relationships between tickets?? A quick web search suggests that the answer is //Yes//, but only if you use an unmaintained plugin called `TracTicketReferencePlugin`...) -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:14> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by Igor): I noticed a recent commit that adds (some) support for packaging HEVC with alpha layer. https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/17e4746687abc53f0a042620a7af... However, I still cannot get a video that works. I am trying the following {{{ ffmpeg -vcodec libvpx-vp9 -i input.webm -c:v libx265 -x265-params "alpha=1" output.mp4 }}} Output {{{ Input #0, matroska,webm, from 'input.webm': Metadata: encoder : libwebm-0.3.0.0 creation_time : 2023-11-29T12:59:06.000000Z Duration: 00:00:03.00, start: 0.000000, bitrate: 4790 kb/s Stream #0:0(eng): Video: vp9 (libvpx-vp9) (Profile 0), yuva420p(tv), 1200x1638, SAR 1:1 DAR 200:273, 30 fps, 30 tbr, 1k tbn (default) Metadata: alpha_mode : 1 [libvpx-vp9 @ 0x5591173d7000] v1.9.0 Stream mapping: Stream #0:0 -> #0:0 (vp9 (libvpx-vp9) -> hevc (libx265)) Press [q] to stop, [?] for help [libvpx-vp9 @ 0x5591173d7000] v1.9.0 x265 [info]: HEVC encoder version 4.1+54-fa2770934 x265 [info]: build info [Linux][GCC 10.2.1][64 bit] 8bit x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 x265 [info]: Main profile, Level-4 (Main tier) x265 [info]: Thread pool created using 12 threads x265 [info]: Slices : 1 x265 [info]: frame threads / pool features : 3 / wpp(26 rows) x265 [info]: Coding QT: max CU size, min CU size : 64 / 8 x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3 x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00 x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0 x265 [info]: References / ref-limit cu / depth : 3 / off / on x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1 x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60 x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp x265 [info]: tools: b-intra strong-intra-smoothing lslices=8 deblock sao alpha Output #0, mp4, to 'output.mp4': Metadata: encoder : Lavf61.9.101 Stream #0:0(eng): Video: hevc (hev1 / 0x31766568), yuva420p(tv, progressive), 1200x1638 [SAR 1:1 DAR 200:273], q=2-31, 30 fps, 15360 tbn (default) Metadata: encoder : Lavc61.28.100 libx265 alpha_mode : 1 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A }}} Funny that `ffmpeg` understands that the output should be in `yuva420p` but the resulting file isn't recognized by Safari or QuickTime on Mac, but plays on Windows without transparency (though like the input file). `ffprobe` does not recognize alpha layer (I guess when it says `Scalability type 2 not supported`) {{{ [hevc @ 0x56075b908c40] Scalability type 2 not supported [hevc @ 0x56075b908c40] Ignoring unsupported VPS extension Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf61.9.101 Duration: 00:00:03.00, start: 0.000000, bitrate: 854 kb/s Stream #0:0[0x1](eng): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 1200x1638 [SAR 1:1 DAR 200:273], 842 kb/s, 30 fps, 30 tbr, 15360 tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc61.28.100 libx265 [hevc @ 0x56075b925b40] Scalability type 2 not supported [hevc @ 0x56075b925b40] Ignoring unsupported VPS extension }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:15> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by Igor): Replying to [comment:14 logiclrd]:
I have found the following sequence which //seems// to produce an MP4 file with HEVC with alpha content, but I am not on a Mac and have found no way to test it because the decoding support described by this ticket is not yet implemented. :-)
{{{ x265 --input-res 606x692 --fps 30000/1001 --alpha --crf 20 Zap.yuva420p Zap.hevc mkvmerge Zap.hevc -o Zap.mkv ffmpeg -itsscale 0.3336666666 -i Zap.mkv -c copy -vtag hvc1 Zap.mp4 -y }}}
I also tried using `x265` cli to encode separately into `*.hevc` and then package into mp4, but the result is equal to using `ffmpeg` directly. I see you use `mkvmerge`, why this interim step is needed? -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:16> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by James): Replying to [comment:15 Igor]:
I noticed a recent commit that adds (some) support for packaging HEVC with alpha layer.
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/17e4746687abc53f0a042620a7af...
However, I still cannot get a video that works. I am trying the
following
{{{ ffmpeg -vcodec libvpx-vp9 -i input.webm -c:v libx265 -x265-params "alpha=1" output.mp4 }}}
Can you upload the output? I don't have a new enough libx265 to generate one. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:17> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by Igor): Replying to [comment:17 James]:
Replying to [comment:15 Igor]:
I noticed a recent commit that adds (some) support for packaging HEVC with alpha layer.
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/17e4746687abc53f0a042620a7af...
However, I still cannot get a video that works. I am trying the
following
{{{ ffmpeg -vcodec libvpx-vp9 -i input.webm -c:v libx265 -x265-params "alpha=1" output.mp4 }}}
Can you upload the output? I don't have a new enough libx265 to generate one. Here you go https://drive.google.com/file/d/1mYBiPWaHyWjlMPz4r09EweIKEuWJrtjF/view?usp=s... -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:18> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by James): The file seems to have all the required parameter sets and alpha layer slices, so the only thing it's missing is the hvc1 tag. Use {{{-tag:v hvc1}}} for the output. You can also remove the custom alpha=1 x265-param as the library will detect the pixel format you're passing to it has an alpha plane. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:19> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
The file seems to have all the required parameter sets and alpha layer slices, so the only thing it's missing is the hvc1 tag. Use {{{-tag:v hvc1}}} for the output.
You can also remove the custom alpha=1 x265-param as the library will detect the pixel format you're passing to it has an alpha plane. Appreciate your effort to look into the file, adding a tag indeed did the
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Comment (by Igor): Replying to [comment:19 James]: trick! So, for the folks, that are looking for a solution, here what I used: {{{ ffmpeg -vcodec libvpx-vp9 -i input.webm -c:v libx265 -tag:v hvc1 output.mp4 }}} Please mind that I compiled both `ffmpeg` and `x265` from the upstream. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:20> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
#7965: Support for HEVC with Alpha -------------------------------------+----------------------------------- Reporter: leemartin | Owner: (none) Type: enhancement | Status: closed Priority: wish | Component: avcodec Version: git-master | Resolution: fixed Keywords: hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+----------------------------------- Changes (by quinkblack): * resolution: => fixed * status: open => closed Comment: Both decoding and encoding are supported now by FFmpeg 8.0 -- Ticket URL: <https://trac.ffmpeg.org/ticket/7965#comment:21> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker
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